NOAO >   Observing Info >   Approved Programs >   2018A-0225

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Program Information for 2018A-0225


PI: Regis Cartier, CTIO, rcartier@ctio.noao.edu
Address: Casilla 603, La Serena Chile

CoI: Mark Sullivan, University of Southampton
CoI: Luc Dessart, Universidad de Chile
CoI: Joseph Anderson, ESO
CoI: Lluis Galbany, U. of Pittsburgh
CoI: Eric Hsiao, Florida State U.
CoI: Robert E. Firth, University of Southampton
CoI: Kate Maguire, Queen's U. Belfast
CoI: Giuliano Pignata, Universidad Andres Bello
CoI: Mark Phillips, Carnegie Institution of Washington
CoI: Nidia Morel, Carnegie Institution of Washington
CoI: Pilar Ruiz-Lapuente, Instituto de Física Fundamental
CoI: Cosimo Inserra, University of Southampton
CoI: Mat Smith, University of Southampton

Title: Observations of the Type Ia-CSM SN 2016iks beyond 500 d: witnessing the fade of the circumstellar interaction

Abstract: Type Ia supernovae displaying signatures of interaction with circumstellar material (CSM) around their progenitor systems (dubbed ’Ia-CSM’) are a very rare and controversial class of supernova explosion, but provide some of the best evidence for ‘single degenerate’ progenitors. We propose to continue our optical+NIR study of SN 2016iks using Gemini telescopes. SN2016iks was discovered 20 d before peak brightness – among the earliest of any Ia-CSM – and promptly classified by the PESSTO survey, revealing strong Balmer emission lines tracing interaction with a dense CSM. We now want to obtain an spectrum at 600 d and photometry between 530 and 630 d, a phase when the optical brightness expected to have a steep drop marking the end of the interaction and Halpha shows an asymmetric profile, a possible signature of dust condensation in the SN ejecta. This is a unique opportunity to observe this rare class of SN at this phase, only a handful SNe have been observed that late before.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2018A):  GEM-NQ/GMOSN -- 6.67hrs band 2 (GS-2018A-Q-228 )


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NOAO >   Observing Info >   Approved Programs >   2018A-0225

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