Determining The Progenitors Of Type Ia Supernovae From Their Environments

Details Determining The Progenitors Of Type Ia Supernovae From Their Environments Determining The Progenitors Of Type Ia Supernovae From Their Environments

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543015w&link_type=abstract

American Astronomical Society, AAS Meeting #215, #430.15; Bulletin of the American Astronomical Society, Vol. 42, p.358

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a recalculation of the rates of supernovae in local, low redshift (z<0.1) from the Nearby Galaxies Supernovae Search Project (Strolger, 2003) using improved baselines designed to maximize SNe yield. Approximately 15 additional SNe of various types and ages have been discovered from the dataset and added to the 42 SNe already detected. This sample is sufficient to obtain a more accurate rate of SNe in the local universe. The rates are weighted by volume, total light, and host galaxy type. Further spectroscopic data for the progenitor galaxies of each event will allow us to compare the rates using various galaxy properties. Contributions include an estimate of the precision and depth of the survey with false supernovae, and estimated luminosity function using literature estimates, and determining the control times for the survey to correct for the cadence and sensitivity of the survey. We present a detailed description of the resurveying of the NGSS dataset, the rate calculations, and the preliminary results. This research is supported by the Kentucky Space Grant Consortium, which is funded by a NASA Training Grant as part of the National Space Grant College and Fellowship Program.

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