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HD 57582


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A redshift survey of low-surface-brightness galaxies. I - The basic data
Initial results from a 21 cm redshift survey of 375 very low surfacebrightness galaxies contained in the Uppsala General Catalog of Galaxiesare presented. The selection criteria and detection statistics as afunction of the sample optical properties are fully discussed. Theredshift distribution for the sample exhibits a pronounced peak at 5000km/s, corresponding to the well-studied Perseus-Pisces supercluster. Theoverall detection rate was 65 percent, and the bulk of the detectionsare genuine low surface brightness spiral galaxies, may with linewidthsin excess of 300 km/s, as opposed to true dwarf galaxies. It is arguedthat most of the nondetections are unlikely to be gas-poor dwarfs, butinstead are galaxies with velocities beyond 10,000 km/s. Taken as awhole, the sample demonstrates that optical surface brightness is notnecessarily a reliable indicator of intrinsic luminosity or mass.

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Observation and Astrometry data

Constellation:Puppis
Right ascension:07h19m15.99s
Declination:-49°58'40.8"
Apparent magnitude:7.271
Distance:149.477 parsecs
Proper motion RA:-71.7
Proper motion Dec:120.2
B-T magnitude:8.62
V-T magnitude:7.383

Catalogs and designations:
Proper Names
HD 1989HD 57582
TYCHO-2 2000TYC 8128-1695-1
USNO-A2.0USNO-A2 0375-03311087
HIPHIP 35465

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