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astro-ph1998
Environmental Dependence of the Nature of Gaseous Envelopes of Galaxies at z < 1
Noriaki Yahata, Kenneth M. Lanzetta, John K. Webb +1
We present new statistical study on the origin of Lyman-alpha absorption systems that are detected in QSO fields. The primary objective is to investigate environmental dependence o…
astro-ph1997
The Gaseous Extent of Galaxies and the Origin of \lya Absorption Systems at z < 1
H. -W. Chen, K. M. Lanzetta, J. K. Webb +1
We present initial results of a program to obtain and analyze HST WFPC2 images of galaxies in fields of HST spectroscopic target QSOs. The goal of the program is to investigate how…