AAS 205th Meeting, 9-13 January 2005
Session 71 Supernovae
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

Previous   |   Session 71   |   Next

[71.04] Estimation of SNe Rate by PCA Analysis

K. Krughoff, A. Connolly (U. Pitt), J. Frieman (FNAL), G. Kilper, M. Subbarao, E. Sheldon (U. Chicago)

The SDSS third data release (DR3) spectroscopic sample has provided a sample of ~370,000 spectra with mean redshift z~q 0.1. Despite the fact that the spectrograph fibers cover only 3" we expect to serendipitously observe a significant number of galaxies with supernova events occurring within the area covered by the fiber. Following Madgwick et al. (2002) we implement a principle component analysis to detect supernovae spectra superimposed upon the SDSS galaxy spectra. Using the positively identified type Ia supernovae in the spectroscopic sample, in conjunction with simulated galaxy+supernova spectra, we can constrain the supernovae detection rate at z=0.1 as a function of galaxy spectral type and environment.

Previous   |   Session 71   |   Next

Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.