Paper:	New Surveys for Companions to E and S0 Galaxies
Volume:	327, Satellites and Tidal Streams
Page:	178
Authors:	Madore, B.F.; Freedman, W.L.
Abstract:	Two new surveys for physical companions orbiting elliptical and lenticular galaxies are introduced. The first is an electronic survey for radial velocity confirmed companions to the so-called “isolated elliptical” sample of Bothun & Sullivan (1977) undertaken using the NASA/IPAC Extragalactic Database (NED), and the second is a complete survey of all S0 galaxies in the Revised Shapley-Ames Catalog (Sandage & Tammann 1981), combining both visual inspection/classification of apparent companions followed up with radial velocity searches again using NED.

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