Program: GS-2010A-Q-59
| Title: | The Origins of Halo Gas |
| PI: | Glenn Kacprzak |
| Co-I(s): | Michael Murphy, Christopher Churchill |
Abstract
Current literature suggests that AGN feedback, stellar winds, and
supernovae play a significant role in regulating the metal content of
galaxies and are likely responsible for the chemical enrichment of the
intergalactic medium. However, it has yet to be demonstrated that
galaxy star-formation rates or metallicities are correlated with the
amount of baryons and metals deposited into galaxy halos. The metals
in gaseous halos of galaxies are frequently detected in the spectra of
background quasars. Here we propose to obtain spectra of 14 z<0.5
spectroscopically identified MgII absorption-selected galaxies in
order to measure accurate, dust corrected star-formation rates and
metallicities. Our goal is to establish the star-formation rate and
metallicity relationships with the halo absorption properties of these
absorber-galaxy pairs.