On the possibility of gas-rich dwarf galaxies in the Lyman-alpha forest

It is argued here that the high-column density absorbers in the Lyman-alpha forest are low surface brightness, gas-rich, high space density dwarf galaxies that appear in the line of sight, thus lending the impression that spiral galaxies must have been enormous in early epochs. It is shown that the...

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Veröffentlicht in:	Astrophys. J.; (United States) 1988-06, Vol.329 (2), p.57-59
1. Verfasser:	TYSON, N. D
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION SPECTRA Astronomy CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONFIGURATION DENSITY Earth, ocean, space Exact sciences and technology GALAXIES INTERGALACTIC SPACE Interstellar medium (ism) and nebulae in external galaxies LUMINOSITY LYMAN LINES MORPHOLOGY OPTICAL PROPERTIES PHYSICAL PROPERTIES RED SHIFT SIZE SPACE SPECTRA 640105 > Astrophysics & Cosmology-- Galaxies SPIRAL CONFIGURATION STAR EVOLUTION Stellar systems. Galactic and extragalactic objects and systems. The universe
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