Assembly bias evidence in close galaxy pairs

ABSTRACT The growth channel of massive galaxies involving mergers can be studied via close pairs as putative merger progenitors, where the stellar populations of the satellite galaxies will be eventually incorporated into the massive primaries. We extend our recent analysis of the GAMA-based sample...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2019-07, Vol.487 (1), p.435-443
Main Authors: Ferreras, I, Hopkins, A M, Lagos, C, Sansom, A E, Scott, N, Croom, S, Brough, S
Format: Article
Language:English
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Summary:ABSTRACT The growth channel of massive galaxies involving mergers can be studied via close pairs as putative merger progenitors, where the stellar populations of the satellite galaxies will be eventually incorporated into the massive primaries. We extend our recent analysis of the GAMA-based sample of close pairs presented in Ferreras et al. to the general spectroscopic data set of SDSS galaxies (DR14), for which the high S/N of the data enables a detailed analysis of the differences between satellite galaxies with respect to the mass of the primary galaxy. A sample of approximately 2000 satellites of massive galaxies is carefully selected within a relatively narrow redshift range (0.07
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stz1286