The Gaseous Extent of Galaxies and the Origin of \lya Absorption Systems at z < 1

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dc.creatorChen, H. -W.
dc.creatorLanzetta, K. M.
dc.creatorWebb, J. K.
dc.creatorBarcons, X.
dc.date1997-09-17
dc.date.accessioned2026-07-07T02:24:16Z
dc.date.available2026-07-07T02:24:16Z
dc.descriptionWe 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 the properties of \lya absorption systems observed in the spectra of background QSOs vary with the properties of intervening galaxies. We found that \lya absorption equivalent width depends strongly on galaxy impact parameter and galaxy B-band luminosity, and that the gaseous extent of individual galaxies scales with galaxy B-band luminosity by $r\propto L_B^{0.35\pm0.10}$.
dc.description2 pages, LATEX, with 1 ps figure, conf_iap.sty. To appear in the Proceedings of 13th IAP Colloquium (July 1-5, 1997) Structure and Evolution of the Intergalactic Medium from QSO Absorption Line Systems, ed. P. Petitjean, S. Charlot
dc.identifierhttps://arxiv.org/abs/astro-ph/9709173
dc.identifierhttp://arxiv.org/abs/astro-ph/9709173
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11558
dc.subjectAstrophysics
dc.titleThe Gaseous Extent of Galaxies and the Origin of \lya Absorption Systems at z < 1
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