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META TOPICPARENT	name="TransientWorkingGroup"

In 2018 Q2 (and likely in future semesters), Bellm and Graham have programs for low-resolution spectroscopic follow-up with the 3.5m telescope at Apache Point Observatory. Typically our allocation will be 4-6 classically scheduled second-half nights per quarter, plus two ToO programs: one for young supernovae and one for relativistic transients. Target requests welcome by email and/or the GROWTH Marshal.

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At the Gemini-N telescope P.I. Avishay Gal-Yam has a program for ToO observations of young transients from ZTF. 10h of band A ToO time is available per year. The expected mode of use would be optical spectroscopy using GMOS. Contact person: avishay.gal-yam@weizmann.ac.il

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At the Gemini-N telescope P.I. Avishay Gal-Yam has a program for ToO observations of young transients from ZTF. 10h of band A ToO time is available per year. The expected mode of use would be optical spectroscopy using GMOS. Contact person: avishay.gal-yam@weizmann.ac.il; steve.schulze@weizmann.ac.il

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At the 4.2m WHT telelescope P.I. Avishay Gal-Yam has a program for ToO observations of young transients from ZTF. 5h of band ToO time is available during the coming two semesters. The expected mode of use would be optical spectroscopy using ISIS or ACAM. A list of nights we can trigger is here: http://catserver.ing.iac.es/schedules/search_alloc_service.php?semester=2017B&tel=WHT&search_string=S+UK. Contact person: avishay.gal-yam@weizmann.ac.il

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At the 4.2m WHT telelescope P.I. Avishay Gal-Yam has a program for ToO observations of young transients from ZTF. 7.5h of ToO time is available during the current semester. We will apply for more time for the 2020 summer semester. The expected mode of use would be optical spectroscopy using ISIS or ACAM. A list of nights we can trigger updated on the Marshal. Contact person: avishay.gal-yam@weizmann.ac.il; yi.yang@weizmann.ac.il

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Photometry of relatively bright objects may be carried out with telescopes at the Wise Observatory in Israel, typically the 28" C28 or the 55cm W-Fast. Contact person: eran.ofek@weizmann.ac.il; avishay.gal-yam@weizmann.ac.il

Following an MOU with A. Bonanos from Athens National Observatory, we have access to the 2.3m Aristarchos telescope (greece) during specific runs in the summer to conduct late-time photometry of supernovae; during those nights we may be able to obtain photometry also for other urgent targets. Contact person: avishay.gal-yam@weizmann.ac.il

Following MOUa with G. Leloudas, Y. Yang and collaborators from the EIPC team, we can propose spectropolarimetric observations of young and bright SNe with VLT, and imaging polarimetry with LT and NOT. Contact person: yi.yang@weizmann.ac.il (VLT, LT); avishay.gal-yam@weizmann.ac.il (NOT impol).

I have access to Palomar and Keck time, mostly classical time but with a modest amount of TOO triggers. I also have an approved HST program for early UV spectroscopy of one Ia supernova. I have applied for Gemini TOO time and a large Swift program and I plan to apply for VLA time. I will update as and when the results from these applications are made.

Via collaboration with Dr. Assaf Horesh from HUJI we have allocated time on VLA, ALMA and Swift (40 ks) for follow-up of two "flash spectroscopy" SNe in 2018. Contact person: horesh@gmail.com