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28 March 2024
 
  » arxiv » astro-ph/0501139

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Models of Five Absorption Line Systems Along the Line of Sight Toward PG0117+213
J. R. Masiero ; J. C. Charlton ; J. Ding ; C. W. Churchill ; G. Kacprzak ;
Date 8 Dec 2004
Journal Astrophys.J. 623 (2005) 57-78
Subject astro-ph
AffiliationPSU), J. C. Charlton (PSU), J. Ding (PSU), C. W. Churchill (NMSU) and G. Kacprzak (NMSU
AbstractWe 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.
Source arXiv, astro-ph/0501139
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