Changes between Version 4 and Version 5 of Talks/Spring2013/SpecialSeminars/130124


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Timestamp:
01/14/13 18:35:43 (14 years ago)
Author:
gbesla@…
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  • Talks/Spring2013/SpecialSeminars/130124

    v4 v5  
    1818case, such a check had profound implications for the putative
    1919habitability of Kepler-61b.
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     23'''Or Graur'''[[BR]]
     24AMNH
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     26'''Digging for buried treasure: discovery of 90 Type Ia supernovae in a spectroscopic supernova survey in the SDSS
     27'''
     28Today, supernovae are discovered in imaging-based surveys and classified using follow-up spectroscopy. I will show how large-scale spectroscopic galaxy surveys, such as the Sloan Digital Sky Survey (SDSS), can be used to conduct spectroscopic supernova surveys. Using a code that detects and classifies supernovae buried in galaxy spectra, I have detected 90 Type Ia supernovae among ~700,000 galaxy spectra in the 7th SDSS Data Release, which I then used to measure rates and constrain this type of supernova's progenitor scenarios. The results of this survey add to a growing body of evidence that the progenitor is a binary system composed of two carbon-oxygen white dwarfs.