Difference: Variablepapers (8 vs. 9)

Revision 92019-02-09 - ThomasKupfer

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META TOPICPARENT name="VariableWorkingGroup"

Papers from the Galactic Science working group

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  -- Thomas Kupfer - 2018-10-05
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ZTF variable star classification: ML classification method and astrophysical results
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>		Introducing the Zwicky Transient Facility and the Be Star Variability Program: A Progress Report at the National Central University (Conference Paper)
 
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<		Authors: Jan van Roestel
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>		Lead author: Chow-Choong Ngeow
 
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<		Abstract: TBD
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>		Abstract: The Zwicky Transient Facility (ZTF) is a modern-day wide-field optical survey to systematically explore the transient and variable sky. The ZTF utilizes the 48-inch Samuel Oschin Schmidt Telescope located at the Palomar Observatory. This telescope is equipped with a mosaic CCD camera that provides a field of view of 47 squared degrees. The allocated observing time of ZTF can be divided into partnership time (40%), public time (40%) and Caltech time (20%). The public time contains two surveys: a 3-day cadence for the Northern Sky Survey and a 1-day cadence for the Galactic Plane Survey. Astronomical communities in South East Asian countries are encouraged to explore the public ZTF data once it is released in March 2019. Taiwan’s National Central University (NCU) is one of the partnered institutions, and a major ZTF-related project carried out at NCU is the ZTF Be stars variability (ZTF-BeV) program. The main goal of our program is to study the variability of Be stars in the range of ~13.5 to ~20.5 magnitudes.
 
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<		Submitted paper: [[][TBD]]
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>		Submitted paper: SEAAN2018_Ngeow.pdf
 
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<		Introducing the Zwicky Transient Facility and the Be Star Variability Program: A Progress Report at the National Central University (Conference Paper)
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>		A new class of radial mode hot subdwarf pulsators
 
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<		Authors: Chow-Choong Ngeow
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>		Lead author: Thomas Kupfer
 
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<		Abstract: The Zwicky Transient Facility (ZTF) is a modern-day wide-field optical survey to systematically explore the transient and variable sky. The ZTF utilizes the 48-inch Samuel Oschin Schmidt Telescope located at the Palomar Observatory. This telescope is equipped with a mosaic CCD camera that provides a field of view of 47 squared degrees. The allocated observing time of ZTF can be divided into partnership time (40%), public time (40%) and Caltech time (20%). The public time contains two surveys: a 3-day cadence for the Northern Sky Survey and a 1-day cadence for the Galactic Plane Survey. Astronomical communities in South East Asian countries are encouraged to explore the public ZTF data once it is released in March 2019. Taiwan’s National Central University (NCU) is one of the partnered institutions, and a major ZTF-related project carried out at NCU is the ZTF Be stars variability (ZTF-BeV) program. The main goal of our program is to study the variability of Be stars in the range of ~13.5 to ~20.5 magnitudes.
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>		Abstract: We report the discovery of a new class of pulsating hot subdwarf stars as part of dedicated high-cadence observations at low Galactic latitudes using the Zwicky Transient Facility. We found three candidates of this new class. The objects show blue colors ($g-r\leq-0.1$mag), pulsation amplitudes of $>50$\,mmag and pulsation periods of 198, 363, 437\,sec. Fourier transforms of the objects show only one dominant pulsation mode. We obtained phase-resolved spectroscopy for all three objects and found significant velocity, effective temperature and surface gravity variability indicating that the objects are radial mode pulsators. The mean Teff and log(g) for both candidates are consistent with sdB parameters.
 
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<		Submitted paper: SEAAN2018_Ngeow.pdf
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>		Link to the overleaf document


ZTF variable star classification: ML classification method and astrophysical results

Lead author: Jan van Roestel

Abstract: TBD

Submitted paper:

 

A systematic study of Classical and Recurrent Novae in M31

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<		Authors: Monika Soraisam
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>		Lead author: Monika Soraisam
  Abstract:: TBD
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