Joseph DeRose L&S Sciences
Correlating Maximum Intrinsic Luminosity and Spectroscopic Features of Type Ia Supernovae
Type Ia supernovae are the thermonuclear explosions of critical mass white dwarves which have reached the Chandrasekar mass through accretion of mass from their binary companion. The near constancy of their maximum intrinsic brightness is the key to the use of these events in cosmological studies. Unfortunately, systematic errors associated with the diversity of type Ia supernovae continue to limit their usefulness as standard candles. I will use a very large spectroscopic and photometric data set gathered by the Palomar Transient Factory (PTF) in order to identify correlations between the stretch parameter of type Ia light curves and a variety of parameters derived from type Ia blackbody spectra. Combining the correlations between photometric and spectroscopic parameters I hope to obtain a new correction to type Ia maximum intrinsic luminosity. Furthermore, I would like to apply this new correction to obtain a new value for Hubbles constant using the PTF data.