Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943603k&link_type=abstract
American Astronomical Society, AAS Meeting #219, #436.03
Astronomy and Astrophysics
Astronomy
Scientific paper
Using Sloan Digital Sky Survey (SDSS) imaging and spectroscopy, I have measured the colors near the explosion sites of core-collapse SN, as well as the chemical abundances, and specific star formation rates of core-collapse host galaxies. These show the environmental dependence of pre-explosion mass loss for stripped-envelope SN progenitors as well as the presence of high velocity ejecta (i.e., broad-lined Type Ic SN). I present ongoing analysis of follow-up spectroscopic measurements of oxygen abundance at the explosion sites of core-collapse SN with the Mayall telescope. I then turn to a comparison between the host galaxy M-Z relation for core-collapse SN discovered through galaxy-impartial search programs and that for long duration gamma-ray bursts (LGRBs), consistently estimated from line strengths from the SDSS and the literature. This juxtaposition may offer insight into the origin of the metal-poor M-Z relation observed for LGRB host galaxies.
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