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COSMOS-UltraVISTA stellar-to-halo mass relationship: new insights on galaxy formation efficiency out to z ∼ 5

Legrand, L. and McCracken, H. J. and Davidzon, I. and Ilbert, O. and Coupon, J. and Aghanim, N. and Douspis, M. and Capak, P. L. and Le Fèvre, O. and Milvang-Jensen, B. (2019) COSMOS-UltraVISTA stellar-to-halo mass relationship: new insights on galaxy formation efficiency out to z ∼ 5. Monthly Notices of the Royal Astronomical Society, 486 (4). pp. 5468-5481. ISSN 0035-8711. doi:10.1093/mnras/stz1198.

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Using precise galaxy stellar mass function measurements in the COSMOS field we determine the stellar-to-halo mass relationship (SHMR) using a parametric abundance matching technique. The unique combination of size and highly complete stellar mass estimates in COSMOS allows us to determine the SHMR over a wide range of halo masses from z ∼ 0.2 to 5. At z ∼ 0.2, the ratio of stellar-to-halo mass content peaks at a characteristic halo mass M_h = 10^(12) M⊙ and declines at higher and lower halo masses. This characteristic halo mass increases with redshift reaching M_h = 10^(12.5)M⊙ at z ∼ 2.3 and remaining flat up to z = 4. We considered the principal sources of uncertainty in our stellar mass measurements and also the variation in halo mass estimates in the literature. We show that our results are robust to these sources of uncertainty and explore likely explanation for differences between our results and those published in the literature. The steady increase in characteristic halo mass with redshift points to a scenario where cold gas inflows become progressively more important in driving star formation at high redshifts, but larger samples of massive galaxies are needed to rigorously test this hypothesis.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Legrand, L.0000-0003-0610-5252
McCracken, H. J.0000-0002-9489-7765
Davidzon, I.0000-0002-2951-7519
Ilbert, O.0000-0002-7303-4397
Aghanim, N.0000-0002-6688-8992
Capak, P. L.0000-0003-3578-6843
Le Fèvre, O.0000-0001-5891-2596
Milvang-Jensen, B.0000-0002-2281-2785
Additional Information:© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2019 April 24. Received 2019 April 24; in original form 2018 October 23. Published: 02 May 2019. The COSMOS team in France acknowledges support from the Centre National d’Études Spatiales. LL acknowledges financial support from Euclid Consortium and CNES. HJM acknowledges financial support from the ‘Programme national cosmologie et galaxies’ (PNCG) and the DIM-ACAV. OI acknowledge funding of the French Agence Nationale de la Recherche for the ‘SAGACE’ project. Support for this work was also provided by NASA. The Cosmic Dawn Center is funded by the DNRF. This research is also partly supported by the Centre National d’Etudes Spatiales (CNES). The authors wish to thank P. Behroozi, J. Silk, M. Lehnert, G. Mamon, N. Malavasi, R. M. J. Janssen, and G. Despali for their useful comments on an earlier version of this manuscript. The authors would also like to thank the referee for a thorough and constructive report which improved this paper. This work is based on data products from observations made with ESO Telescopes at the La Silla Paranal Observatory under ESO programme ID 179.A-2005 and on data products produced by TERAPIX and the Cambridge Astronomy Survey Unit on behalf of the UltraVISTA consortium. It is also based on observations and archival data made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Centre National d’Études Spatiales (CNES)UNSPECIFIED
Euclid ConsortiumUNSPECIFIED
Programme National Cosmologie et Galaxies (PNCG)UNSPECIFIED
Domaine d'Intérêt Majeur Astrophysique et Conditions d'Apparition de la vie (DIM-ACAV)UNSPECIFIED
Agence Nationale pour la Recherche (ANR)UNSPECIFIED
Danish National Research FoundationUNSPECIFIED
Subject Keywords:methods: statistical – galaxies: evolution – galaxies: haloes
Issue or Number:4
Record Number:CaltechAUTHORS:20190521-141621060
Persistent URL:
Official Citation:L Legrand, H J McCracken, I Davidzon, O Ilbert, J Coupon, N Aghanim, M Douspis, P L Capak, O Le Fèvre, B Milvang-Jensen, The COSMOS-UltraVISTA stellar-to-halo mass relationship: new insights on galaxy formation efficiency out to z ∼ 5, Monthly Notices of the Royal Astronomical Society, Volume 486, Issue 4, July 2019, Pages 5468–5481,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95648
Deposited By: Tony Diaz
Deposited On:21 May 2019 21:28
Last Modified:16 Nov 2021 17:14

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