On the intermediate-redshift central stellar mass-halo mass relation, and implications for the evolution of the most massive galaxies since z~1
| Autor: | Vinu Vikram, Danilo Marchesini, Diego Capozzi, Claudia Maraston, Roy R. Gal, Marcella Carollo, Zheng Zheng, Alessandro Rettura, Vincent Bouillot, Francesco Shankar, Ravi K. Sheth, A. Meert, Marc Huertas-Company, Peter Behroozi, Begoña Ascaso, Hong Guo, Brian C. Lemaux, Mariangela Bernardi, Christopher J. Conselice, Lori M. Lubin, Andrey V. Kravtsov, Andrea Cattaneo, Stewart Buchan |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Systematic error
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Stellar mass media_common.quotation_subject FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences 0103 physical sciences Galaxy formation and evolution Astrophysics::Solar and Stellar Astrophysics 10. No inequality 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics media_common Physics 010308 nuclear & particles physics Astronomy and Astrophysics Universe Galaxy Redshift Space and Planetary Science Mass relation Halo Astrophysics::Earth and Planetary Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Shankar, F, Guo, H, Bouillot, V, Rettura, A, Meert, A, Buchan, S, Kravtsov, A, Bernardi, M, Sheth, R, Vikram, V, Marchesini, D, Behroozi, P, Zheng, Z, Maraston, C, Ascaso, B, Lemaux, B C, Capozzi, D, Huertas-company, M, Gal, R R, Lubin, L M, Conselice, C J, Carollo, M & Cattaneo, A 2014, ' On the intermediate-redshift central stellar mass-halo mass relation, and implications for the evolution of the most massive galaxies since z ∼ 1 ', The Astrophysical Journal, vol. 797, no. 2, L27 . https://doi.org/10.1088/2041-8205/797/2/L27 |
| DOI: | 10.1088/2041-8205/797/2/L27 |
| Popis: | The stellar mass-halo mass relation is a key constraint in all semi-analytic, numerical, and semi-empirical models of galaxy formation and evolution. However, its exact shape and redshift dependence remain debated. Several recent works support a relation in the local Universe steeper than previously thought. Based on the comparisons with a variety of data on massive central galaxies, we show that this steepening holds up to z~1, for stellar masses Mstar>2e11 Msun. Specifically, we find significant evidence for a high-mass end slope of ��>0.35-0.70, instead of the usual ��~0.20-0.30 reported by a number of previous results. When including the independent constraints from the recent BOSS clustering measurements, the data, independent of any systematic errors in stellar masses, tend to favor a model with a very small scatter (< 0.15 dex) in stellar mass at fixed halo mass, in the redshift range z < 0.8 and for Mstar>3e11 Msun, suggesting a close connection between massive galaxies and host halos even at relatively recent epochs. We discuss the implications of our results with respect to the evolution of the most massive galaxies since z~1. 6 pages, 4 figures. ApJ Letters, accepted |
| Databáze: | OpenAIRE |
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