NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-18 T23:01:16 PDT
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For refcode 1977PASP...89....5B:
Retrieve 34 NED objects in this reference.
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NED Abstract

Copyright by Astronomical Society of the Pacific. Reproduced by permission
1977PASP...89....5B A Search for Close Dwarf Companions of Elliptical Galaxies G. D. Bothun and W.T. Sullivan Department of Astronomy, University of Washington ABSTRACT It is found that the mean number of dwarf companions within a projected distance of 75 kpc from each of a sample of 34 isolated giant elliptical galaxies is, in a statistical sense, +0.12 +/- 0.42 (95% confidence interval). Comparison is made with the results of Holmberg (1969) for a similar survey of 115 spiral galaxies in which the mean number of dwarf companions was found to be +1.08 +/- 0.37. We argue that these values differe by a significant amount and that differences in sample selection and other procedures would be likely, if anything, to increase the difference. Finally we speculate on the possible reasons why elliptical galaxies have fewer, smaller, or ontrinsically less luminous dwarf companions than spirals.
Retrieve 34 NED objects in this reference.
Please click here for ADS abstract

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