The Galaxy-Halo Connection for 1.5 ≲ z≲ 5 as Revealed by the Spitzer Matching Survey of the UltraVISTA Ultra-deep Stripes

William I. Cowley, Karina I. Caputi, Smaran Deshmukh, Matthew L.N. Ashby, Giovanni G. Fazio, Olivier Le Fèvre, Johan P.U. Fynbo, Olivier Ilbert, Henry J. McCracken, Bo Milvang-Jensen, Rachel Somerville

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The Spitzer Matching Survey of the UltraVISTA ultra-deep Stripes (SMUVS) provides unparalleled depth at 3.6 and 4.5 μm over ∼0.66 deg2 of the COSMOS field, allowing precise photometric determinations of redshift and stellar mass. From this unique data set we can connect galaxy samples, selected by stellar mass, to their host dark matter halos for 1.5 < z < 5.0, filling in a large hitherto unexplored region of the parameter space. To interpret the observed galaxy clustering, we use a phenomenological halo model, combined with a novel method to account for uncertainties arising from the use of photometric redshifts. We find that the satellite fraction decreases with increasing redshift and that the clustering amplitude (e.g., comoving correlation length/large-scale bias) displays monotonic trends with redshift and stellar mass. Applying ΛCDM halo mass accretion histories and cumulative abundance arguments for the evolution of stellar mass content, we propose pathways for the coevolution of dark matter and stellar mass assembly. Additionally, we are able to estimate that the halo mass at which the ratio of stellar-to-halo mass is maximized is 1012.5 +0.10-0.08 Mo at z ∼ 2.5. This peak halo mass is here inferred for the first time from stellar mass-selected clustering measurements at z ≳ 2, and it implies a mild evolution of this quantity for , consistent with constraints from abundance-matching techniques.

Original languageEnglish (US)
Article number69
JournalAstrophysical Journal
Volume853
Issue number1
DOIs
StatePublished - Jan 20 2018

Fingerprint

stellar mass
halos
galaxies
dark matter
assembly
coevolution
histories
trends
estimates
accretion
history

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • galaxies: evolution
  • galaxies: formation
  • galaxies: high-redshift
  • large-scale structure of universe
  • methods: statistical

Cite this

Cowley, William I. ; Caputi, Karina I. ; Deshmukh, Smaran ; Ashby, Matthew L.N. ; Fazio, Giovanni G. ; Le Fèvre, Olivier ; Fynbo, Johan P.U. ; Ilbert, Olivier ; McCracken, Henry J. ; Milvang-Jensen, Bo ; Somerville, Rachel. / The Galaxy-Halo Connection for 1.5 ≲ z≲ 5 as Revealed by the Spitzer Matching Survey of the UltraVISTA Ultra-deep Stripes. In: Astrophysical Journal. 2018 ; Vol. 853, No. 1.
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abstract = "The Spitzer Matching Survey of the UltraVISTA ultra-deep Stripes (SMUVS) provides unparalleled depth at 3.6 and 4.5 μm over ∼0.66 deg2 of the COSMOS field, allowing precise photometric determinations of redshift and stellar mass. From this unique data set we can connect galaxy samples, selected by stellar mass, to their host dark matter halos for 1.5 < z < 5.0, filling in a large hitherto unexplored region of the parameter space. To interpret the observed galaxy clustering, we use a phenomenological halo model, combined with a novel method to account for uncertainties arising from the use of photometric redshifts. We find that the satellite fraction decreases with increasing redshift and that the clustering amplitude (e.g., comoving correlation length/large-scale bias) displays monotonic trends with redshift and stellar mass. Applying ΛCDM halo mass accretion histories and cumulative abundance arguments for the evolution of stellar mass content, we propose pathways for the coevolution of dark matter and stellar mass assembly. Additionally, we are able to estimate that the halo mass at which the ratio of stellar-to-halo mass is maximized is 1012.5 +0.10-0.08 Mo at z ∼ 2.5. This peak halo mass is here inferred for the first time from stellar mass-selected clustering measurements at z ≳ 2, and it implies a mild evolution of this quantity for , consistent with constraints from abundance-matching techniques.",
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author = "Cowley, {William I.} and Caputi, {Karina I.} and Smaran Deshmukh and Ashby, {Matthew L.N.} and Fazio, {Giovanni G.} and {Le F{\`e}vre}, Olivier and Fynbo, {Johan P.U.} and Olivier Ilbert and McCracken, {Henry J.} and Bo Milvang-Jensen and Rachel Somerville",
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Cowley, WI, Caputi, KI, Deshmukh, S, Ashby, MLN, Fazio, GG, Le Fèvre, O, Fynbo, JPU, Ilbert, O, McCracken, HJ, Milvang-Jensen, B & Somerville, R 2018, 'The Galaxy-Halo Connection for 1.5 ≲ z≲ 5 as Revealed by the Spitzer Matching Survey of the UltraVISTA Ultra-deep Stripes', Astrophysical Journal, vol. 853, no. 1, 69. https://doi.org/10.3847/1538-4357/aaa41d

The Galaxy-Halo Connection for 1.5 ≲ z≲ 5 as Revealed by the Spitzer Matching Survey of the UltraVISTA Ultra-deep Stripes. / Cowley, William I.; Caputi, Karina I.; Deshmukh, Smaran; Ashby, Matthew L.N.; Fazio, Giovanni G.; Le Fèvre, Olivier; Fynbo, Johan P.U.; Ilbert, Olivier; McCracken, Henry J.; Milvang-Jensen, Bo; Somerville, Rachel.

In: Astrophysical Journal, Vol. 853, No. 1, 69, 20.01.2018.

Research output: Contribution to journalArticle

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AU - Cowley, William I.

AU - Caputi, Karina I.

AU - Deshmukh, Smaran

AU - Ashby, Matthew L.N.

AU - Fazio, Giovanni G.

AU - Le Fèvre, Olivier

AU - Fynbo, Johan P.U.

AU - Ilbert, Olivier

AU - McCracken, Henry J.

AU - Milvang-Jensen, Bo

AU - Somerville, Rachel

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KW - galaxies: formation

KW - galaxies: high-redshift

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KW - methods: statistical

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