FRITZ Marshal Corresponding Filters

• Lead: Eric Bellm, others involved: Tony Rodriguez
• Abstract: Population synthesis suggests there may be compact object binaries with detectable self-lensing signals in ZTF--we are searching to see if we can identify these non-interacting binaries.
• Required Data Products: archival light curves

Student Thesis projects

• NCU -- Jia-Yu Ou (advisor: Ngeow) Investigation of Mira in M33 [PhD thesis] -- using ZTF + archival data for the study of Mira in M33

FRITZ Marshal Corresponding Filters

• Required Data Products: Archival Lightcurves, PSF catalogs
• Status on March 2022: Paper on the PL relation for contact binaries and RR Lyrae in globular clusters has been published and accepted, respectively.

Characterizing Cataclysmic Variables

• Required Data Products: archival light curves, alerts

Close binaries at the centre of planetary nebulae

• Lead: Albert Kong, others involved: Ray Li

FRITZ Marshal Corresponding Filters

• People involved: Amruta Jaodand, Michael Coughlin, Megan Jones, David Kaplan, Tom Prince, Eric Bellm, Kevin Burdge,
• Abstract: Many Fermi gamma-ray sources have turned out to be millisecond pulsar binaries, many of them rare black widow/redback/huntsman systems. To identify new candidates we are period searching ZTF data in Fermi error circles as well as cross-correlating other X-ray and radio catalogs and performing RV followup.
• Required Data Products: matchfile lightcurves

• Required Data Products: Archival Lightcurves

LISA Gravitational Wave Sources in ZTF

• Lead: Kevin Burdge

FRITZ Marshal Corresponding Filters

• Required Data Products: alerts, matchfile lightcurves

Calibration of period-luminosity relations using ZTF observed globular clusters

• Lead: Chow-Choong Ngeow

• Required Data Products: Archival Lightcurves, PSF catalogs

Characterizing Cataclysmic Variables

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad), Jan van Roestel
• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.

• Required Data Products: archival light curves

Student Thesis projects

• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis] -- using ZTF light curves cross-matched with PS1 and Gaia to characterize known variable stars in Galactic Plane (no classification)
• NCU -- Vaidehi Varma (advisor: Ngeow) Identifying Blazhko RR Lyrae with ZTF [PhD thesis] -- using ZTF light curves to identfy Blazhko RR Lyrae
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events [PhD thesis]

FRITZ Marshal Corresponding Filters

• Lead: Albert Kong, others involved: Ray Li
• Abstract: By cross matching the Gaia catalogue with X-ray catalogues, we select candidates of AR Sco type objects for ZTF timing study.
• Required Data Products: archival light curves, alerts

Student Thesis projects

• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis] -- using ZTF light curves cross-matched with PS1 and Gaia to characterize known variable stars in Galactic Plane (no classification)

FRITZ Marshal Corresponding Filters

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad), Jan van Roestel
• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.
• Required Data Products: archival light curves, alerts

Student Thesis projects

• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis] -- using ZTF light curves cross-matched with PS1 and Gaia to characterize known variable stars in Galactic Plane (no classification)

FRITZ Marshal Corresponding Filters

• Abstract: We are making a general catalog of variable objects (stars, AGN). More details can be found here.
• Required data products: archival lightcurves

Searches for state-changing X-ray binaries

• Lead: Eric Bellm, grad student David Wang, Amruta Jaodand
• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)
• Required Data Products: alerts, matchfile lightcurves

Calibration of period-luminosity relations using ZTF observed globular clusters

• Lead: Chow-Choong Ngeow
• Abstract: The main aim of this project is to calibrate the period-luminosity relations in ZTF gri-band using both RR Lyraes and contact binaries found in globular clusters (GC), as basic information for GC is already available in literature. This project is an extension of the GROWTH SURF 2018 Summer Research Program for Alison Duck (UMD).
• Required Data Products: Archival Lightcurves, PSF catalogs

• Required Data Products: Archival Lightcurves, PSF catalogs
• Status on March 2021: Paper on the PL relation for contact binaries in globular clusters has been submittted; Paper on the PL relation for RR Lyrae in globular clusters is in-progress.

Characterizing Cataclysmic Variables

• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.

Student Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) Identifying Blazhko RR Lyrae with ZTF [PhD thesis] -- using ZTF light curves to identfy Blazhko RR Lyrae
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events [PhD thesis]

A search for compact objects with ZTF

• Lead: Draco Reed (adviser: Michael Coughlin); others involved: Kevin Burdge, Jan van Roestel, Tom Prince.
• Abstract: The project aims to find and characterize compact objects with ZTF. In addition to Kevin's thesis project concentrating on white dwarf - white dwarf systems by period searching blue objects (as determined by PS1), we have also begun a search on Swift X-ray sources. From this latter search, we have already found a known helium dwarf nova, and are expanding the search now. We will characterize the systems found with KPED.
• Required data products: archival lightcurves and statistics

Postdoc projects

The population of short period hot subdwarfs/helium stars using ZTF lightcurves

• Lead: Thomas Kupfer
• Abstract: The project aims to find and characterize short period helium stars/sdB stars in ZTF, including binaries and pulsators. One goal is to discover and characterize hot subdwarf pulsators. The second goal is to find and characterize the population of short period sdB binaries mostly due to ellipsoidal modulation as well as the predicted semi-detached hot subdwarf binaries.
• Required data products: Mostly archival lightcurves

• Abstract: The project aims to find and characterize short period helium stars/sdB stars in ZTF, including binaries and pulsators. One goal is to discover and characterize hot subdwarf pulsators. The second goal is to find and characterize the population of short period sdB binaries mostly due to ellipsoidal modulation as well as the predicted semi-detached hot subdwarf binaries.
• Required data products: Mostly archival lightcurves

• Lead: Jan van Roestel; others involved: Kevin Burdge, Michael Coughlin, Keaton Bell, Thomas Kupfer.
• Abstract: The project aims to find and characterize the population of periodic eclipsing white dwarf systems including; WD+RD systems (detached + accreting; aka period-bouncer CVs), long period AM CVn, `EL CVn' binaries (pre-He WD systems) and long period dWDs.
• Required data products: archival lightcurves and statistics, (negative) alerts for fully eclipsing of WDs

Radial velocity followup of PS1 RR Lyrae

• Lead: Judy Cohen, Nina Hernitschek

• People: Phillipson, Bellm
• Abstract: We aim to characterize the temporal variability of potentially accreting sources in ZTF in order to identify new systems that may not be detectable by period searches or outbursts.
• Required data products: Archival light curves

GROWTH Marshal Science Programs & Corresponding Filters

• Coordinated by Jan van Roestel (full list of people in google doc)
• Abstract: We are making a general catalog of variable objects (stars, AGN). More details can be found here.
• Required data products: archival lightcurves

Searches for state-changing X-ray binaries

• Lead: Eric Bellm, grad student David Wang, Amruta Jaodand
• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)
• Required Data Products: alerts, matchfile lightcurves

Searches for counterparts to Fermi unassociated sources

• Abstract: Many Fermi gamma-ray sources have turned out to be millisecond pulsar binaries, many of them rare black widow/redback/huntsman systems. To identify new candidates we are period searching ZTF data in Fermi error circles as well as cross-correlating other X-ray and radio catalogs and performing RV followup.
• Required Data Products: matchfile lightcurves

Stellar flare occurance rates

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: We are making a general catalog of variable stars for ZTF alerts DB
• Required data products: alert database lightcurves

Searches for state-changing X-ray binaries

• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)
• Required Data Products: alerts, matchfile lightcurves

Searches for counterparts to Fermi unassociated sources

• People: Suhail, Mroz
• Abstract: Parallax measurements of Galactic Cepheids are one of three methods to anchor the Cepheid P-L for measuring distances to Type Ia supernova host galaxies. Recent calibration of the distance scale with Cepheid parallaxes use data from the Gaia DR2 (Riess et al. 2018b). The aim of our project is to understand the properties of the sample of Cepheids (50 in total) which have Gaia parallaxes and photometry from HST in R18b using ZTF data. Moreover, the ZTF data can provide an independent test of the criteria used in selecting Cepheids for distance scale studies.
• Required data products: Archival light curves

GROWTH Marshal Science Programs & Corresponding Filters

• Lead: Chow-Choong Ngeow
• Abstract: The main aim of this project is to calibrate the period-luminosity relations in ZTF gri-band using both RR Lyraes and contact binaries found in globular clusters (GC), as basic information for GC is already available in literature. This project is an extension of the GROWTH SURF 2018 Summer Research Program for Alison Duck (UMD).
• Required Data Products: Archival Lightcurves, PSF catalogs

Characterizing Cataclysmic Variables

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad)
• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.

Student Thesis projects

• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis] -- using ZTF light curves cross-matched with PS1 and Gaia to characterize known variable stars in Galactic Plane (no classification)

• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events [PhD thesis]

LISA Gravitational Wave Sources in ZTF

GROWTH Marshal Science Programs & Corresponding Filters

(ML) Classification of variable objects

• Coordinated by Jan van Roestel (full list of people in google doc)

GROWTH Marshal Science Programs & Corresponding Filters

• Lead: Jim Davenport, with Eric Bellm & undergraduate Courtney Klein
• Abstract: We are using HiCAPS continuous cadence lightcurves to identify stellar flares and measure the flare occurrence rate across the HR diagram
• Required Data Products: matchfile lightcurves

• Lead: Chow-Choong Ngeow

• Required Data Products: Archival Lightcurves, PSF catalogs

Characterizing Cataclysmic Variables

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad)

Student Thesis projects

• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events [PhD thesis]

LISA Gravitational Wave Sources in ZTF

• Lead: Judy Cohen, Nina Hernitschek
• Abstract: We are using ZTF data to verify the periods and zero-phases for the sample of about 500 RR Lyr in the outer halo of the Milky Way for which we have radial velocities at one specific date. The sample is from the PS1 RR Lyr catalog, and we use their phasing parameters, but worry that over the interval between when the PS1 imaging was done and the present (almost a decade now) if the PS1 parameters are very slightly off, the prediction for the current phases will be wrong, and our correction from observed radial velocity on date X to the systemic radial velocity of the star will not be correct.
• Required data products: alert database lightcurves

Searching and Characterising Pulsar Binaries

• Lead: Amruta Jaodand (Caltech) others involved: Tom Prince, Kevin Brudge, Michael Coughlin, Ashish Mahabal, Eric Bellm et al
• Abstract: Using periodicity searches, ML to find interesting pulsar bianry candidates which could be vetted with multi-wavelength (specifically X-ray) follow ups. Intial part of the porject focussed on knpwn redback, black widows to characterise the search pipeline.
  We are also monitoring the known systems for any state changes and watching out for correlations with other all sky surveys. A part of the project may involves cross-corraltion with Fermi catalog.

GROWTH Marshal Science Programs & Corresponding Filters

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad)
• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.
• Required Data Products: archival light curves

Searching for Boyajian's Star Analogs

• People involved: Jim Davenport, Kyle Boone, Meredith Rawls, Eric Bellm, Brigitta Sipocz, Keaton Bell, Colin Slater, Daniela Huppenkothen, Bryce Kalmbach, and any other DIRAC Time Domain Group members
• Abstract: We are searching ZTF light curves for infrequent short-term variability ("dips") similar to Boyajian's Star. This unique F star was observed by Kepler to exhibit dips as well as a long-term gradual decrease in brightness, and the physical origin of variability is not understood. Our work is online at https://github.com/dirac-institute/ZTF_Boyajian.

• Abstract: This project aimed to study and characterize variability of Be stars using ZTF (and some archival data such as ASAS-SN), mainly aimed for faint Be stars, with various time-scales.
• Required data products: PSF catalogs, and archival light curves
• NCU -- Chandler Lee for Be stars variability

Cepheids

• People: Suhail, Mroz
• Abstract: Parallax measurements of Galactic Cepheids are one of three methods to anchor the Cepheid P-L for measuring distances to Type Ia supernova host galaxies. Recent calibration of the distance scale with Cepheid parallaxes use data from the Gaia DR2 (Riess et al. 2018b). The aim of our project is to understand the properties of the sample of Cepheids (50 in total) which have Gaia parallaxes and photometry from HST in R18b using ZTF data. Moreover, the ZTF data can provide an independent test of the criteria used in selecting Cepheids for distance scale studies.

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: Using ZTF lightcurves, we can systematically search for LISA gravitational wave sources by looking for periodic signatures in objects with periods of less than 30 minutes. We are specifically targeting binary systems with orbital periods less than 60 minutes, containing two compact objects (either WD, NS, or BH systems), as these systems will emit gravitational waves in the LISA sensitivity band. Our goal is to significantly increase the number of known LISA verification binaries, as well as carefully characterize the systems we discover.
• Required Data Products: Archival Lightcurves

Postdoc projects

The population of short period hot subdwarfs/helium stars using ZTF lightcurves

• Keaton Bell, Matthew Graham
• Abstract: A search for anything orbiting a white dwarf which causes irregular eclipses
• Required data products: archival lightcurves and statistics, alerts for fully eclipsing of WDs

RR Lyrae Discovery in ALert Stream and Lightcurve ~ (photometric) metallicity Relation

• Lead: V. Zach Golkhou
• Abstract: We aim to create a general catalog of variable stars for ZTF alert database including RR Lyrae and annotate them with their estimated photometric metallicity.

GROWTH Marshal Science Programs & Corresponding Filters

LISA Gravitational Wave Sources in ZTF

• Lead: Kevin Burdge (advisor: Prince)

• Required Data Products: Archival Lightcurves

Postdoc projects

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.
• Required Data Products: archival light curves

Searching for Boyajian's Star Analogs

• People involved: Jim Davenport, Kyle Boone, Meredith Rawls, Eric Bellm, Brigitta Sipocz, Keaton Bell, Colin Slater, Daniela Huppenkothen, Bryce Kalmbach, and any other DIRAC Time Domain Group members
• Abstract: We are searching ZTF light curves for infrequent short-term variability ("dips") similar to Boyajian's Star. This unique F star was observed by Kepler to exhibit dips as well as a long-term gradual decrease in brightness, and the physical origin of variability is not understood. Our work is online at https://github.com/dirac-institute/ZTF_Boyajian.

GROWTH Marshal Science Programs & Corresponding Filters

• Required data products: PSF catalogs, and archival light curves
• NCU -- Chandler Lee for Be stars variability

GROWTH Marshal Science Programs & Corresponding Filters

• NCU -- Chandler Lee for Be stars variability

-- ThomasKupfer - 10 Apr 2018

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.
• Required Data Products: archival light curves

Student Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) Investigation of Blazhko RR Lyrae with ZTF Light Curves [PhD thesis]

GROWTH Marshal Science Programs & Corresponding Filters

Student Thesis projects

• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis]

• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events [PhD thesis]

LISA Gravitational Wave Sources in ZTF

GROWTH Marshal Science Programs & Corresponding Filters

• Required data products: Mostly archival lightcurves

The population of eclipsing white dwarfs (dWD, WD+MS)

A search for eclipsing planetisimals around white dwarfs

• Keaton Bell, Matthew Graham

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)
• Required Data Products: alerts, matchfile lightcurves

Searches for counterparts to Fermi unassociated sources

• Abstract: Many Fermi gamma-ray sources have turned out to be millisecond pulsar binaries, many of them rare black widow/redback/huntsman systems. To identify new candidates we are period searching ZTF data in Fermi error circles as well as cross-correlating other X-ray and radio catalogs and performing RV followup.
• Required Data Products: matchfile lightcurves

Stellar flare occurance rates

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: We are making a general catalog of variable stars for ZTF alerts DB
• Required data products: alert database lightcurves

Searches for state-changing X-ray binaries

• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)
• Required Data Products: alerts, matchfile lightcurves

Searches for counterparts to Fermi unassociated sources

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: We aim to create a general catalog of variable stars for ZTF alert database including RR Lyrae and annotate them with their estimated photometric metallicity.
• Required data products: alert database lightcurves

Be stars Variability

• Lead: Chandler Lee; others involved: Chow-Choong Ngeow, Po-Chieh Yu
• Abstract: This project aimed to study and characterize variability of Be stars using ZTF (and some archival data such as ASAS-SN), mainly aimed for faint Be stars, with various time-scales.

GROWTH Marshal Science Programs & Corresponding Filters

• Coordinated by Jan van Roestel (full list of people in google doc)
• Abstract: We are making a general catalog of variable objects (stars, AGN). More details can be found here.
• Required data products: archival lightcurves

Searches for state-changing X-ray binaries

• Lead: Eric Bellm, undergrad Rebecca Kyer
• Abstract: Accreting NS & BH X-ray binaries show outbursts and state transitions due to accretion disk instabilities. Many more of these systems are predicted to exist than are presently known, and optical variability provides a sensitive tool for identifying them. We are performing searches on several fronts: a) monitoring alerts from known XRBs to identify new outbursts as they happen b) performing generic searches for outbursts from cataloged X-ray sources in the alert stream and c) performing more sensitive variability searches in the matchfiles (along with Burdge, Coughlin, et al.)

• Abstract: The project aims to find and characterize compact objects with ZTF. In addition to Kevin's thesis project concentrating on white dwarf - white dwarf systems by period searching blue objects (as determined by PS1), we have also begun a search on Swift X-ray sources. From this latter search, we have already found a known helium dwarf nova, and are expanding the search now. We will characterize the systems found with KPED.
• Required data products: archival lightcurves and statistics

Be stars Variability

• Lead: Chandler Lee; others involved: Chow-Choong Ngeow, Po-Chieh Yu

GROWTH Marshal Science Programs & Corresponding Filters

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]
• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis]
• NCU -- Lin-Lin Teng (advisor: Wing Ip) Variability of T Tauri stars [Master thesis]

LISA Gravitational Wave Sources in ZTF

GROWTH Marshal Science Programs & Corresponding Filters

(ML) Classification of variable objects

• Coordinated by Jan van Roestel (full list of people in google doc)
• Abstract: We are making a general catalog of variable objects (stars, AGN). More details can be found here.
• Required data products: archival lightcurves

Calibration of RR Lyrae period-luminosity relations using ZTF observed globular clusters

• Lead: Chow-Choong Ngeow

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries

• UW -- Courtney Klein [advisors: Eric Bellm, Jim Davenport]: stellar flare occurrence rates

• Coordinated by Jan van Roestel (full list of people in google doc)
• Abstract: We are making a general catalog of variable objects (stars, AGN). More details can be found here.
• Required data products: archival lightcurves

• Lead: Chow-Choong Ngeow
• Abstract: The main aim of this project is to calibrate the period-luminosity relations in ZTF gri-band using RR Lyraes found in globular clusters (GC), as basic information for GC is already available in literature. This project is an extension of the GROWTH SURF 2018 Summer Research Program for Alison Duck (UMD).
• Required Data Products: Archival Lightcurves, PSF catalogs

• Lead: Paula Szkody (UW), others involved: Isabel de Jesus Lima (UW grad visitor), Brooke Dicenzo (UW undergrad)
• Abstract: We are using mainly the Growth Marshal to find and classify novae, dwarf novae and novalikes (SW Sex, polars, IPs) from light curves and followup spectral data, especially to compare number densities in and out of the galactic plane.
• Required Data Products: archival light curves

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]
• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis]
• NCU -- Lin-Lin Teng (advisor: Wing Ip) Variability of T Tauri stars [Master thesis]
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events

• Lead: Kevin Burdge (advisor: Prince)
• Abstract: Using ZTF lightcurves, we can systematically search for LISA gravitational wave sources by looking for periodic signatures in objects with periods of less than 30 minutes. We are specifically targeting binary systems with orbital periods less than 30 minutes, containing two compact objects (either WD, NS, or BH systems), as these systems will emit gravitational waves in the LISA sensitivity band. Our goal is to significantly increase the number of known LISA verification binaries, as well as carefully characterize the systems we discover.
• Required Data Products: Archival Lightcurves

• Lead: Thomas Kupfer
• Abstract: The project aims to find and characterize short period helium stars/sdB stars in ZTF, including binaries and pulsators. One goal is to discover and characterize hot subdwarf pulsators. The second goal is to find and characterize the population of short period sdB binaries mostly due to ellipsoidal modulation as well as the predicted semi-detached hot subdwarf binaries.
• Required data products: Mostly archival lightcurves

• Lead: Jan van Roestel; others involved: Keaton Bell, Thomas Kupfer.
• Abstract: The project aims to find and characterize the population of eclipsing white dwarf systems including; WD+RD systems, `EL CVn' binaries (pre-He WD systems), and any white dwarf with comets, debris, and planets around them. We will use ZTF lightcurves to search for eclipsing systems.
• Required data products: archival lightcurves and statistics, alerts for fully eclipsing of WDs

• Lead: Michael Coughlin; others involved: Kevin Burdge, Jan van Roestel.
• Abstract: The project aims to find and characterize compact objects with ZTF. In addition to Kevin's thesis project concentrating on white dwarf - white dwarf systems by period searching blue objects (as determined by PS1), we have also begun a search on Swift X-ray sources. From this latter search, we have already found a known helium dwarf nova, and are expanding the search now. We will characterize the systems found with KPED.
• Required data products: archival lightcurves and statistics

• Lead: Chandler Lee; others involved: Chow-Choong Ngeow, Po-Chieh Yu
• Abstract: This project aimed to study and characterize variability of Be stars using ZTF (and some archival data such as ASAS-SN), mainly aimed for faint Be stars, with various time-scales.
• Required data products: PSF catalogs, and archival light curves

GROWTH Marshal Science Programs & Corresponding Filters

General projects

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries

GROWTH Marshal Science Programs & Corresponding Filters

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries
• UW -- Courtney Klein [advisors: Eric Bellm, Jim Davenport]: stellar flare occurrence rates
• Fermi binary search (Kaplan/Bellm + ...)

• Required data products: archival lightcurves

Calibration of RR Lyrae period-luminosity relations using ZTF observed globular clusters

GROWTH Marshal Science Programs & Corresponding Filters

• Lead: Chow-Choong Ngeow
• Abstract: The main aim of this project is to calibrate the period-luminosity relations in ZTF gri-band using RR Lyraes found in globular clusters (GC), as basic information for GC is already available in literature. This project is an extension of the GROWTH SURF 2018 Summer Research Program for Alison Duck (UMD).
• Required Data Products: Archival Lightcurves, PSF catalogs

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]

GROWTH Marshal Science Programs & Corresponding Filters

• Fermi binary search (Kaplan/Bellm + ...)

(ML) Classification of variable stars

• Abstract: A general analysis and classification of the ZTF variable stars is very benificial to many in this working group. This project involves; period searching all stars, calculating lightcurve statistics and matching with other catalogs (e.g. PS, Gaia), training and validating a ML classifier. The goal is to do a general purpose classification of all variables. More details can be found here.
• Required data products: archival lightcurves

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: A general analysis and classification of the ZTF variable stars is very benificial to many in this working group. This project involves; period searching all stars, calculating lightcurve statistics and matching with other catalogs (e.g. PS, Gaia), training and validating a ML classifier. The goal is to do a general purpose classification of all variables. More details can be found here.
• Required data products: archival lightcurves

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]

• Lead: Michael Coughlin; others involved: Kevin Burdge, Jan van Roestel.
• Abstract: The project aims to find and characterize compact objects with ZTF. In addition to Kevin's thesis project concentrating on white dwarf - white dwarf systems by period searching blue objects (as determined by PS1), we have also begun a search on Swift X-ray sources. From this latter search, we have already found a known helium dwarf nova, and are expanding the search now. We will characterize the systems found with KPED.
• Required data products: archival lightcurves and statistics

• NCU -- Chandler Lee for Be stars variability

-- ThomasKupfer - 10 Apr 2018

GROWTH Marshal Science Programs & Corresponding Filters

(ML) Classification of variable stars

• People involved: Jan van Roestel (CIT), Ashish Mahabal (CIT), Matthew Graham (CIT), Eric Bellm (UW), Daniela Huppenkothen (UW), David Levitan (Microsoft)

• Required data products: archival lightcurves

Thesis projects

GROWTH Marshal Science Programs & Corresponding Filters

• Fermi binary search (Kaplan/Bellm + ...)

(ML) Classification of variable stars

• Required data products: archival lightcurves

Thesis projects

GROWTH Marshal Science Programs & Corresponding Filters

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]
• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis]
• NCU -- Lin-Lin Teng (advisor: Wing Ip) Variability of T Tauri stars [Master thesis]

• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events

Postdoc projects

The population of short period hot subdwarfs/helium stars using ZTF lightcurves

GROWTH Marshal Science Programs & Corresponding Filters

• Abstract: The project aims to find and characterize the population of eclipsing white dwarf systems including; WD+RD systems, `EL CVn' binaries (pre-He WD systems), and any white dwarf with comets, debris, and planets around them. We will use ZTF lightcurves to search for eclipsing systems.
• Required data products: archival lightcurves and statistics, alerts for fully eclipsing of WDs

Be stars

• Lead: Chandler Lee
• Abstract: TBD

GROWTH Marshal Science Programs & Corresponding Filters

(ML) Classification of variable stars

• Lead: Jan van Roestel

• Required data products: archival lightcurves

Thesis projects

The population of eclipsing white dwarf - main sequence/planet(isimals)

• Required data products: archival lightcurves and statistics, alerts for fully eclipsing of WDs

Be stars

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries
• UW -- Courtney Klein [advisors: Eric Bellm, Jim Davenport]: stellar flare occurrence rates
• Fermi binary search (Kaplan/Bellm + ...)

Thesis projects

• Lead: Jan van Roestel
• Abstract: The project aims to find and characterize the population of eclipsing white dwarf systems including; WD+RD systems, `EL CVn' binaries (pre-He WD systems), and any white dwarf with comets, debris, and planets around them. I will use ZTF lightcurves to search for eclipsing systems.

Be stars

• Lead: Chandler Lee

Marshal Science Programs & Corresponding Filters

• Abstract: The project aims to find and characterize short period helium stars/sdB stars in ZTF, including binaries and pulsators. One goal is to discover and characterize hot subdwarf pulsators. The second goal is to find and characterize the population of short period sdB binaries mostly due to ellipsoidal modulation as well as the predicted semi-detached hot subdwarf binaries.
• Required data products: Mostly archival lightcurves

Be stars

• Lead: Chandler Lee
• Abstract: TBD
• Required data products: TBD

• NCU -- Chandler Lee for Be stars variability

-- ThomasKupfer - 10 Apr 2018

Marshal Science Programs & Corresponding Filters

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries
• UW -- Courtney Klein [advisors: Eric Bellm, Jim Davenport]: stellar flare occurrence rates
• Fermi binary search (Kaplan/Bellm + ...)

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF [PhD thesis]
• NCU -- Atharva Patil (advisor: Ngeow) Galactic Plane variable stars with ZTF [PhD thesis]

• Caltech -- Kevin Burdge (advisor: Prince); ultracompact binaries in the ZTF data
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events

Marshal Science Programs & Corresponding Filters

• NCU -- Chandler Lee for Be stars variability
• Caltech -- Jan van Roestel; Machine learning (deeplearning) variable star classification and the population of eclipsing compact binary stars (WD-MS, (lowmass)WD-WD)

Thesis projects

Marshal Science Programs & Corresponding Filters

Thesis projects

• Caltech -- Kevin Burdge (advisor: Prince); ultracompact binaries in the ZTF data
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events

Marshal Science Programs & Corresponding Filters

Postdoc projects

• NCU -- Chandler Lee for Be stars variability

• KITP/Caltech -- Thomas Kupfer: Compact hot subdwarf binaries

Thesis projects

Marshal Science Programs & Corresponding Filters

Postdoc projects

• NCU -- Chandler Lee for Be stars variability

• KITP/Caltech -- Thomas Kupfer: Compact hot subdwarf binaries

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF

Marshal Science Programs & Corresponding Filters

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF

• Caltech -- Kevin Burdge (advisor: Prince); ultracompact binaries in the ZTF data
• LBNL -- Michael Medford (advisor: Nugent): detection and characterization of microlensing events

Marshal Science Programs & Corresponding Filters

• UW -- Eric Bellm (+ grad student?): searches for state-changing X-ray binaries
• UW -- Courtney Klein [advisors: Eric Bellm, Jim Davenport]: stellar flare occurrence rates

Postdoc projects

Marshal Science Programs & Corresponding Filters

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF
• Caltech -- Kevin Burdge (advisor: Prince); ultracompact binaries in the ZTF data

Marshal Science Programs & Corresponding Filters

General projects

Postdoc projects

• NCU -- Chandler Lee for Be stars variability

Marshal Science Programs & Corresponding Filters

Postdoc projects

• NCU -- Chandler Lee for Be stars variability
• Caltech -- Jan van Roestel (Sept18); Variable star classification and the population of eclipsing compact binary stars

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF

Marshal Science Programs & Corresponding Filters

Postdoc projects

• Caltech -- Jan van Roestel (Sept18); Variable star classification and the population of eclipsing compact binary stars

Thesis projects

Marshal Science Programs & Corresponding Filters

Thesis projects

• NCU -- Vaidehi Varma (advisor: Ngeow) for Search and Characterize RR Lyrae in ZTF

Marshal Science Programs & Corresponding Filters

Postdoc projects

• NCU -- Chandler Lee for Be stars variability

Thesis projects

Marshal Science Programs & Corresponding Filters

Thesis projects

-- ThomasKupfer - 10 Apr 2018 \ No newline at end of file

Marshal Science Programs & Corresponding Filters

Postdoc projects

Thesis projects