Lyman-alpha emission in star-forming galaxies

IUE observations of five blue, low-metallicity, star-forming galaxies sufficiently redshifted to permit detection of Lyman-alpha are reported. The galaxies with metallicities 0.1 time solar or more have weak or absent Lyman-alpha emission. There is evidence for increasing Lyman-alpha emission with d...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 326; no. 1; pp. 101 - 109
Main Authors Hartmann, Lee W., Huchra, John P., Geller, Margaret J., O'Brien, Paul, Wilson, Robert
Format Journal Article
LanguageEnglish
Published Legacy CDMS University of Chicago Press 01.03.1988
Subjects
Astronomy
Astrophysics
Earth, ocean, space
Exact sciences and technology
Interstellar medium (ism) and nebulae in external galaxies
Stellar systems. Galactic and extragalactic objects and systems. The universe
Blue galaxies
Correlation analysis
Metallicity
Stellar population
Lyman alpha line
Stellar formation region
Ultraviolet spectrum
Ultraviolet observation
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Summary:IUE observations of five blue, low-metallicity, star-forming galaxies sufficiently redshifted to permit detection of Lyman-alpha are reported. The galaxies with metallicities 0.1 time solar or more have weak or absent Lyman-alpha emission. There is evidence for increasing Lyman-alpha emission with decreasing metallicity. The reduction of Lyman-alpha fluxes from recombination values is attributed to absorption of multiply scattered Lyman-alpha by dust.
Bibliography:CDMS
Legacy CDMS
ISSN:0004-637X
1538-4357
DOI:10.1086/166072