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29 March 2024
 
  » arxiv » 0708.3547

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New Probable Dwarf Galaxies in Northern Groups of the Local Supercluster
I. D. Karachentsev ; V. E. Karachentseva ; W. K. Huchtmeier ;
Date 27 Aug 2007
AbstractWe have searched for nearby dwarf galaxies in 27 northern groups with characteristic distances 8-15 Mpc based on the Second Palomar Sky Survey prints. In a total area of about 2000 square degrees, we have found 90 low-surface-brightness objects, more than 60% of which are absent from known catalogs and lists. We have classified most of these objects (~80%) as irregular dwarf systems. The first 21-cm line observations of the new objects with the 100-m Effelsberg radio telescope showed that the typical linear diameters (1-2 kpc), internal motions (30 km/s), and hydrogen masses (~2*10^7M_sun) galaxies correspond to those expected for the dwarf population of nearby groups.
Source arXiv, 0708.3547
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