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Stellar mass to halo mass relation from galaxy clustering in VUDS: a high star formation efficiency at z ≃ 3

Durkalec, A. and Capak, P. and Scoville, N. (2015) Stellar mass to halo mass relation from galaxy clustering in VUDS: a high star formation efficiency at z ≃ 3. Astronomy and Astrophysics, 576 . Art. No. L7. ISSN 0004-6361. http://resolver.caltech.edu/CaltechAUTHORS:20150812-083009200

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Abstract

The relation between the galaxy stellar mass M⋆ and the dark matter halo mass M_h gives important information on the efficiency in forming stars and assembling stellar mass in galaxies. We present measurements of the ratio of stellar mass to halo mass (SMHR) at redshifts 2 < z < 5, obtained from the VIMOS Ultra Deep Survey. We use halo occupation distribution (HOD) modelling of clustering measurements on ~3000 galaxies with spectroscopic redshifts to derive the dark matter halo mass M_h, and spectral energy density fitting over a large set of multi-wavelength data to derive the stellar mass M⋆ and compute the SMHR = M⋆/M_h. We find that the SMHR ranges from 1% to 2.5% for galaxies with M⋆ = 1.3 × 10^9 M⊙ to M⋆ = 7.4 × 10^9 M⊙ in DM halos with M_h = 1.3 × 10^(11) M⊙ to M_h = 3 × 10^(11) M⊙. We derive the integrated star formation efficiency (ISFE) of these galaxies and find that the star formation efficiency is a moderate 6−9% for lower mass galaxies, while it is relatively high at 16% for galaxies with the median stellar mass of the sample ~ 7 × 10^9 M⊙. The lower ISFE at lower masses may indicate that some efficient means of suppressing star formation is at work (like SNe feedback), while the high ISFE for the average galaxy at z ~ 3 indicates that these galaxies efficiently build up their stellar mass at a key epoch in the mass assembly process. Based on our results, we propose a possible scenario in which the average massive galaxy at z ~ 3 begins to experience truncation of its star formation within a few million years.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1051/0004-6361/201425532 DOIArticle
http://www.aanda.org/articles/aa/abs/2015/04/aa25532-14/aa25532-14.htmlPublisherArticle
http://arxiv.org/abs/1412.5584arXivDiscussion Paper
Additional Information:© 2015 ESO. Article published by EDP Sciences. Received 17 December 2014; Accepted 27 February 2015; Published online 23 March 2015. We thank Jean Coupon and Carlo Schimd for interesting discussions. This work is supported by the European Research Council Advanced Grant ERC-2010-AdG-268107-EARLY, and by INAF Grants PRIN 2010&2012 and PICS 2013. A.C., O.C., M.T. and V.S. acknowledge the grant MIUR PRIN 2010–2011. This work is supported by the OCEVU Labex (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02). A.P. is supported by grant UMO-2012/07/B/ST9/04425 and the Polish-Swiss Astro Project. Research conducted within the scope of the HECOLS International Associated Laboratory, supported in part by the Polish NCN grant Dec-2013/08/M/ST9/00664. This work is based on data products made available at the CESAM data center, Laboratoire d’Astrophysique de Marseille, France.
Group:COSMOS
Funders:
Funding AgencyGrant Number
European Research Council (ERC)ERC-2010-AdG-268107-EARLY
Istituto Nazionale di Astrofisica (INAF)PRIN 2010
Istituto Nazionale di Astrofisica (INAF)PRIN 2012
Istituto Nazionale di Astrofisica (INAF)PICS 2013
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)PRIN 2010–2011
Agence Nationale pour la Recherche (ANR)ANR-11-LABX-0060
Agence Nationale pour la Recherche (ANR)ANR-11-IDEX-0001-02
National Science CenterUMO-2012/07/B/ST9/04425
Polish-Swiss Astro ProjectUNSPECIFIED
Polish NCNDec-2013/08/M/ST9/00664
Subject Keywords:large-scale structure of Universe – early Universe – galaxies: evolution – methods: statistical
Record Number:CaltechAUTHORS:20150812-083009200
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150812-083009200
Official Citation:A. Durkalec, O. Le Fèvre, S. de la Torre, A. Pollo, P. Cassata, B. Garilli, V. Le Brun, B. C. Lemaux, D. Maccagni, L. Pentericci, L. A. M. Tasca, R. Thomas, E. Vanzella, G. Zamorani, E. Zucca, R. Amorín, S. Bardelli, L. P. Cassarà, M. Castellano, A. Cimatti, O. Cucciati, A. Fontana, M. Giavalisco, A. Grazian, N. P. Hathi, O. Ilbert, S. Paltani, B. Ribeiro, D. Schaerer, M. Scodeggio, V. Sommariva, M. Talia, L. Tresse, D. Vergani, P. Capak, S. Charlot, T. Contini, J. G. Cuby, J. Dunlop, S. Fotopoulou, A. Koekemoer, C. López-Sanjuan, Y. Mellier, J. Pforr, M. Salvato, N. Scoville, Y. Taniguchi and P. W. Wang A&A 576 L7 (2015) DOI: http://dx.doi.org/10.1051/0004-6361/201425532
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59434
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Aug 2015 15:58
Last Modified:12 Aug 2015 15:58

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