http://arxiv.org/abs/1705.07582
Properties of galaxies like their absolute magnitude and their stellar mass content are correlated. These correlations are tighter for close pairs of galaxies, which is called galactic conformity. Similar correlation patterns can be seen between properties of halos from dark matter simulations. The extent of these correlations is the focus of this work. The scale dependent correlation coefficients quantify the correlations between properties of galaxies or halos, depending on the distance to other galaxies or halos. This new method is applied to galaxy catalogues derived from the Sloan Digital Sky Survey (SDSS) and to halo catalogues from the MultiDark simulations. Both for galaxies and halos a scale dependent conformity is confirmed. Moreover the scale dependent correlation coefficients reveal a signal of conformity out to 40Mpc and beyond.
M. Kerscher
Tue, 23 May 17
11/68
Comments: 9 pages with 4 figures using aa.cls
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