# The Baryonic Collapse Efficiency of Galaxy Groups in the RESOLVE and ECO Surveys

@article{Eckert2017TheBC,
title={The Baryonic Collapse Efficiency of Galaxy Groups in the RESOLVE and ECO Surveys},
author={Kathleen D. Eckert and Sheila J. Kannappan and Claudia del P Lagos and Ashley D. Baker and Andreas A. Berlind and David V. Stark and Amanda J. Moffett and Zachary Nasipak and Mark A. Norris},
journal={The Astrophysical Journal},
year={2017},
volume={849}
}
• Published 21 September 2017
• Physics
• The Astrophysical Journal
We examine the z = 0 group-integrated stellar and cold baryonic (stars + cold atomic gas) mass functions (group SMF and CBMF) and the baryonic collapse efficiency (group cold baryonic to dark matter halo mass ratio) using the RESOLVE and ECO survey galaxy group catalogs and a galform semi-analytic model (SAM) mock catalog. The group SMF and CBMF fall off more steeply at high masses and rise with a shallower low-mass slope than the theoretical halo mass function (HMF). The transition occurs at…
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