PI: Saurabh Jha, Rutgers U., email@example.com
Address: Department of Physics and Astronomy, 136 FRELINGHUYSEN ROAD, PISCATAWAY, NJ 08855-0849 USA
CoI: Yssavo Camacho, Rutgers U.
CoI: Ryan Foley, UC Santa Cruz
CoI: Yen-Chen Pan, UC Santa Cruz
CoI: Curtis McCully, Las Cumbres Observatory
Title: Spectroscopy of Type Iax Supernovae
Abstract: Type Ia supernovae (SN Ia) have enormous importance to cosmology and astrophysics, but their progenitors and explosion mechanisms are not known in detail. Recently, observations and theoretical models have suggested that not all thermonuclear white-dwarf supernova explosions are normal SN Ia. In particular, type Iax supernovae (SN Iax, peculiar cousins to SN Ia), are also thought to be exploding white dwarfs. Amazingly, it may be that we have a better idea about how SN Iax explode, compared to SN Ia. Here we propose to obtain Gemini spectroscopy of nearby SN Iax to test the leading SN Iax model: whether they arise from single-degenerate binary systems with a helium star donor, and whether the explosions are deflagrations that fail to completely disrupt the white dwarf, leaving behind a bound remnant. By contrasting the results from our proposed SN Iax observations with similar data from SN Ia, we may be able to constrain progenitor and explosion models for normal SN Ia as well, and thus gain a better understanding of the diverse pathways for white dwarf supernova explosions.
Program Type: Standard/Extragalactic
Run 1 (2018A): GEM-NQ/GMOSN -- 4.79hrs band 3 (GN-2018A-Q-318 )
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360