Models of Five Absorption Line Systems Along the Line of Sight Toward PG0117+213

Details Models of Five Absorption Line Systems Along the Line of Sight Toward PG0117+213 Models of Five Absorption Line Systems Along the Line of Sight Toward PG0117+213

2005-01-08

arxiv.org/abs/astro-ph/0501139v1

Astrophys.J. 623 (2005) 57-78

Astronomy and Astrophysics

Astrophysics

34 pages, 5 figures, 10 tables. Accepted for publication to ApJ

Scientific paper

10.1086/428426

We present our investigation into the physical conditions of the gas in five intervening quasar absorption line systems along the line of sight toward the quasar PG 0117+213, with redshifts of z=0.57, z=0.72, z=1.04, z=1.32 and z=1.34. Photoionization modeling of HST, Keck I, and Palomar data, using the code Cloudy, is employed to derive densities and metallicities of the multiple phases of gas required to fit the absorption profile for each system. We discuss the implications of these models for galaxy evolution, including the interpretation of ``CIV deficiency'' and damped Lyman alpha absorbers (DLAs), and the relationships between galaxy morphology, galaxy luminosity, and absorption signature.

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