• Mat S, Joel J, Mickael R, Ana S-C, Ariel G, Bastien C, Benjamin R, Estelle R, Fabrice F, Georgios D, Jakob N, Luke H, Martin B, Mattia B, Maxime D, Melissa A, Nicolas R, Suhail D, Valery B, Young-Lo K

• ZTF21abcxwxi (SN2021oat): weird Ia-91T. Very high velocity. Early type host. Could be Ic: the latest spectrum shows clear Si?
  • The Dublin group are keen to start making comparisons.
  • Could be HST pre-explosion images? Should be able to get a late-time spectrum
• ZTF21abfmbix and ZTF21abfaohe (both nearby). Long term LT monitoring.

Outreach for the group:

• Ivona is looking for input into the outreach output from ZTF. A small amount of text; could be anything worthy for tweeting; deadline next week.
• There is a new website: this needs text. Mickael to draft something.
• ZTF-Vlogs for papers: going to be one for the Y1 paper; ztfquery.

The state of the group:

• Mat's suggestion: let's have an introduction section in these phone-con's. 2/3 people every week; one minute.
• No-one hates it: let's do it next week!

• Jakob to take us where things are with AMPEL. AMPEL is designed to think of ZTF as multiple particle physics experiments.
• Worked example 1: the experiment we're doing is to find lensed SN:
  • These will appear as over-luminous SNe. Requirement: find them in real-time.
  • We can break it down into steps. 1. Find candidates -> Get redshift -> Fit light-curve -> Identify 'bright' -> Alert!
  • To do this in AMPEL you write them as units; each are short python scripts. Pulled together they become a class.
    • Start by filtering the data, then get ancilliary information for each event. Then select on a given criteria.
    • There is a Demo notebook for this: go look at it!
      • Change the date and get any lensed candidates in a couple of hours!
    • Easy to implement once you've written a unit. Can be run live on the real-time data stream. Can be run on archival data through a notebook.
      • Consistent and reproducible: release it with a paper! Re-run likely coming in the next few months.
    • Locally installable! Install the right branch and read his slides

• Jakob's back with the SNIa sample selection next week :).

ZTF Ia Phone-con: 2021-Jun-16

Meeting Agenda:

1. SNe of the week [Joel J]

2. AMPEL: Status and plans [Jakob N & Valery B]

3. AOB / Close

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Participants (XX):

Notes:

Transients of the Week:

AMPEL: Where we are today:

Closing Remarks: