Modeling the Very Slowly Declining Type Ia Supernova 2001ay

Details Modeling the Very Slowly Declining Type Ia Supernova 2001ay Modeling the Very Slowly Declining Type Ia Supernova 2001ay

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812706k&link_type=abstract

American Astronomical Society, AAS Meeting #218, #127.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Krisciunas et al. (2011) recently presented optical and near-IR photometry, plus many optical spectra of the Type Ia SN 2001ay. Its decline rate parameter dm15(B) = 0.68 mag, making it the most slowly declining Type Ia SN known to date. This object was not overluminous in optical bands, and was only slightly overluminous in the J- and H-bands. We can account for many of the observed photometric and spectroscopic features by modeling SN 2001ay with a Chandrasekhar-mass white dwarf exploding via a Pulsating Delayed Detonation (PDD) model. Our model has a relatively rapid rise time of 16 days from the time of explosion to bolometric maximum. This project was funded by the NSF through grants to the University of Chicago (AST-0709181), the University of Oklahoma (AST-0707704), Texas A&M University (AST-0708873), and Florida State University (AST-0708855).

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