Selection effects at 21cm
| Autor: | Briggs, FH, Davies, JI, Impey, C, Phillipps, S |
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| Přispěvatelé: | Kapteyn Astronomical Institute |
| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | LOW SURFACE BRIGHTNESS UNIVERSE, 27-34 STARTPAGE=27;ENDPAGE=34;TITLE=LOW SURFACE BRIGHTNESS UNIVERSE |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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