Generalized Spectral Correlations of Type Ia Supernovae from the Nearby Supernova Factory

Details Generalized Spectral Correlations of Type Ia Supernovae from the Nearby Supernova Factory Generalized Spectral Correlations of Type Ia Supernovae from the Nearby Supernova Factory

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21332105b&link_type=abstract

American Astronomical Society, AAS Meeting #213, #321.05; Bulletin of the American Astronomical Society, Vol. 41, p.376

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a generalized correlation analysis of type Ia supernova spectra with a focus on spectral features that correlate with absolute magnitude in ways that are not already accounted for by color and lightcurve stretch. The results reveal new spectral correlations beyond those of the classic metrics of feature ratios (RSi, RSiS, RCa, EDCa). These new correlations could be used to improve the calibration of type Ia supernovae for cosmology measurements beyond what is possible with stretch and color alone.

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