H I observations of emission-line galaxies

Details H I observations of emission-line galaxies H I observations of emission-line galaxies

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...361...19s&link_type=abstract

Astronomy and Astrophysics, v.361, p.19-32 (2000)

Astronomy and Astrophysics

Astrophysics

17

Galaxies: Compact, Galaxies: Fundamental Parameters, Galaxies: Irregular, Radio Lines: Galaxies

Scientific paper

We present single-dish Lovell telescope H i observations of a sample of 67 emission-line and UV-excess galaxies, of which 52 are taken from the University of Michigan (UM) catalogue. In addition, H i observations of 24 gas-rich irregular galaxies are presented. We find that emission-line galaxies are H i-rich with a median H i mass to blue luminosity ratio MHI/LB of ~ 0.45 Msun/Lsun. Within the UM galaxy sample the MHI/LB ratio tends to increase with decreasing luminosity. Finally, it is found that the most H i-rich UM galaxies are the most metal deficient, implying that these objects are less evolved.

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