Statistics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.2487b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 90, Dec. 1985, p. 2487-2494.
Statistics
55
Brightness Distribution, Galactic Clusters, Red Shift, Space Observations (From Earth), Spiral Galaxies, Astronomical Catalogs, Dwarf Galaxies, Luminosity, Optical Properties
Scientific paper
The authors present the initial results from a 21 cm redshift survey of very low-surface-brightness galaxies that are contained in the Uppsala General Catalog of Galaxies. The selection criteria and detection statistics as a function of the optical properties of this sample are fully discussed. The redshift distribution for this sample of 375 galaxies exhibits a pronounced peak at 5000 km s-1, corresponding to the well-studied Perseus-Pisces supercluster. The overall detection rate was 65% and the bulk of the detections are genuine low-surface-brightness spiral galaxies, many with linewidths in excess of 300 km s-1, as opposed to true dwarf galaxies. The authors argue that most of their nondetections are unlikely to be gas-poor dwarfs but instead are galaxies with velocities beyond 10000 km s-1. Taken as a whole, this sample demonstrates that optical surface brightness is not necessarily a reliable indicator of intrinsic luminosity or mass.
Beers Timothy C.
Bothun Gragory D.
Huchra John P.
Mould Jeremy R.
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