H i Detection Survey of a Complete Magnitude-limited Sample of Dwarf Irregular Galaxies in the Virgo Cluster Area
Abstract
New single-beam Arecibo H I observations of 298 late-type galaxies in the Virgo Cluster drawn mostly from the new catalog of Binggeli, Sandage, and Tammann (1985) are presented. Two hundred seventeen of these constitute a magnitude-limited 'complete sample' of such galaxies, types Sdm through Im and BCD. Sixty-one percent of this 'complete sample' was detected, greatly enhancing the store of redshifts and H I masses for such galaxies in the Virgo Cluster. For detected galaxies, heliocentric velocities, 50 percent profile widths, and single-beam fluxes are presented. For those that escaped detection, upper limits are computed to the flux appropriate to the redshift range (-600 to +3000 km/s).
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- February 1987
- DOI:
- 10.1086/191164
- Bibcode:
- 1987ApJS...63..247H
- Keywords:
-
- Dwarf Galaxies;
- Hydrogen Clouds;
- Irregular Galaxies;
- Radio Sources (Astronomy);
- Virgo Galactic Cluster;
- Centimeter Waves;
- Galactic Evolution;
- Radiant Flux Density;
- Red Shift;
- Astrophysics;
- GALAXIES: CLUSTERING;
- GALAXIES: REDSHIFTS;
- RADIO SOURCES: 21 CM RADIATION