Connecting high-redshift galaxy populations through observations of local Damped Lyman Alpha dwarf galaxies
Abstract
I report on observations of the z=0.01 dwarf galaxy SBS1543+593 which is projected onto the background QSO HS1543+5921. As a star-forming galaxy first noted in emission, this dwarf is playing a pivotal role in our understanding of high-redshift galaxy populations, because it also gives rise to a Damped Lyman Alpha system. This enabled us to analyze, for the first time, the chemical abundance of elements in a Damped Lyman Alpha galaxy using both, emission and absorption diagnostics. We find that the abundances agree with one another within the observational uncertainties. I discuss the implications of this result for the interpretation of high-redshift galaxy observations. A catalog of dwarf-galaxy--QSO projections culled from the Sloan Digital Sky Survey is provided to stimulate future work.
Keywords
Cite
@article{arxiv.0807.2853,
title = {Connecting high-redshift galaxy populations through observations of local Damped Lyman Alpha dwarf galaxies},
author = {Regina E. Schulte-Ladbeck},
journal= {arXiv preprint arXiv:0807.2853},
year = {2009}
}
Comments
Proceedings of IAU Symp. 255