ZTF Ia Phone-con: 2021-Oct-13

Meeting Agenda:

1. SNe of the week [Joel J]

2. DESI overlap [Mickael R/ Ariel G]

2. ZTF-DR2 [Mickael]

4. AOB / Close

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Participants (13):

• Mat S, Mickael R, Ariel G, Estelle R, Joel J, Jakob N, Kate M, Luke H, Maxime D, Melissa A, Suhail D, Giorgos D, Young-Lo K

Transients of the Week:

• None: it's been mostly bad weather.

DESI-Update:

• DESI are happy to share redshifts with ZTF. An archival list of hosts has been collated: they'll cross check their catalogues to see what redshifts are available.
• They will also, hopefully, integrate their redshifts into ZTF alerts.
• They are obtaining a 150k spectra a night.
• Most of the sharing will be informal to avoid paperwork overload: we've sent them a list; let's see what happens.

ZTF-DR2:

• The key question for the data release is typing.
• Mickael has written a web-app for visualising and classifying the spectra.
  • There is a database underneath: all of the results will be stored: no need for notes!
• The tool currently has light-curves and the spectra: host info, light-curve fits and redshifts / spectral features will be implemented shortly.
• The aim is to sub-type all of the spectra, so we only do it once
• Ariel: this overlaps with the GalaxyZoo project; the aims are subtly different, but there's a lot of overlap.
  • Let's talk, clarify the overlap and work together :).
• Who wants to play with it? Kate, Joel and Giorgos have signed up: Jakob and Suhail are other viable candidates
  • Jakob: we've already subtyped several of the spectra: let's test with those.
  • Mickael: the worry is always biases; keen to ensure that we don't subtly introduce them.
• Ariel: how do we test our efficiency? Mickael: more information will be provided!
• Jakob: maybe we can use SNIascore? The problem is that it's trained on DR2 spectra....
• Kate: What are we going to do with the 'unclear' ones? Mat: probably look at them again

Closing remarks:

• Suhail's paper was accepted: woop!
• Back next week