de Propris, Roberto; Liske, Jochen; Driver, Simon; Allen, Paul; Cross, Nicholas J G
We derive the number of dynamically close companions per galaxy (Nc) and their total luminosity (Lc) for galaxies in the Millennium Galaxy Catalogue. Nc is similar to the fraction of galaxies in close pairs and is directly related to the galaxy merger rate. We find Nc = 0.0174 ± 0.0015 and Lc = (252 ± 30) × 106 L⊙ for galaxies with -22 < MB - 5 log h < -19 and (z) = 0.123, and Nc = 0.0357 ± 0.0027 and Lc = (294 ± 31) × 106 L⊙ for galaxies with -21 < MB -5 log h < -18 and (z) = 0.116. The...[Show more]
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