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Selection Effects at 21cm
Published online by Cambridge University Press: 12 April 2016
Abstract
Surveys in the 21cm line of neutral hydrogen are testing the completeness of the catalogs of nearby galaxies. The remarkable observational fact is that the potential wells that confine gas to sufficient density that it can remain neutral in the face of ionizing radiation also provide sites for star formation, so that there are no known cases of neutral intergalactic clouds without associated star light.
- Type
- Observational selection effects
- Information
- International Astronomical Union Colloquium , Volume 171: The Low Surface Brightness Universe , 1999 , pp. 27 - 34
- Copyright
- Copyright © Astronomical Society of the Pacific 1999