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For refcode 1995AJ....109.2003G:
Retrieve 90 NED objects in this reference.
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1995AJ....109.2003G H I OBSERVATIONS OF SOUTHERN EXTREME LATE-TYPE GALAXIES. I. AN OPTICALLY FAINT SAMPLE JOHN S. GALLAGHER III Department of Astronomy, University of Wisconsin-Madison Madison, Wisconsin 53706-1582 Electronic mail: jsg@ayg.astro.wisc.edu J. E. LITTLETON Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 Electronic mail: jel@wvnvaxa.wunet.edu LYNN D. MATTHEWS Department of Earth and Space Sciences, State University of New York at Stony Brook, Stony Brook, New York 11794-2100 Electronic mail: matthews@sbasti.ess.sunysb.edu Received 1994 September 12; revised 1995 January 24 ABSTRACT We have made neutral hydrogen (H I) 21 cm line observations of a sample of 90 southern, low luminosity, extreme late-type galaxies using the 140 ft (43 m) radio telescope at the National Radio Astronomy Observatory. Our targets were selected from catalogs derived from deep photographic exposures taken with Schmidt telescopes. Since our goal was to increase the completeness of samples of small, gas-rich galaxies within the Local Supercluster, our search for H I emission extended out to radial velocities of 3000 km s^-1^. Our sample has a mean M_HI_, three times lower than reported for brighter extreme late-type galaxies in the same region of the sky. We find that the observed M_HI_, in our sample increases with redshift, indicating that the sample of small, gas-rich galaxies within the Local Supercluster remains incomplete. We briefly comment on some of the implications of our observations in terms of the H I properties and H I luminosity function of extreme late-type field galaxies and on the locations of such objects within previously cataloged groups of galaxies.
Retrieve 90 NED objects in this reference.
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