The clustering of massive galaxies at z ∼ 0.5 from the first semester of BOSS data

Martin White, M. Blanton, A. Bolton, D. Schlegel, J. Tinker, A. Berlind, L. Da Costa, E. Kazin, Y. T. Lin, M. Maia, C. K. McBride, N. Padmanabhan, J. Parejko, W. Percival, F. Prada, B. Ramos, E. Sheldon, F. De Simoni, R. Skibba, D. ThomasD. Wake, I. Zehavi, Z. Zheng, R. Nichol, Donald P. Schneider, Michael A. Strauss, B. A. Weaver, David H. Weinberg

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Abstract

We calculate the real-and redshift-space clustering of massive galaxies at z ∼ 0.5 using the first semester of data by the Baryon Oscillation Spectroscopic Survey (BOSS). We study the correlation functions of a sample of 44,000 massive galaxies in the redshift range 0.4 < z < 0.7. We present a halo-occupation distribution modeling of the clustering results and discuss the implications for the manner in which massive galaxies at z ∼ 0.5 occupy dark matter halos. The majority of our galaxies are central galaxies living in halos of mass 1013 h-1 M, but 10% are satellites living in halos 10 times more massive. These results are broadly in agreement with earlier investigations of massive galaxies at z ∼ 0.5. The inferred large-scale bias (b ≈ 2) and relatively high number density (n̄ = 3 × 10-4 h3 Mpc-3) imply that BOSS galaxies are excellent tracers of large-scale structure, suggesting BOSS will enable a wide range of investigations on the distance scale, the growth of large-scale structure, massive galaxy evolution, and other topics.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume728
Issue number2
DOIs
StatePublished - Feb 20 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Large-scale structure of universe

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    White, M., Blanton, M., Bolton, A., Schlegel, D., Tinker, J., Berlind, A., Da Costa, L., Kazin, E., Lin, Y. T., Maia, M., McBride, C. K., Padmanabhan, N., Parejko, J., Percival, W., Prada, F., Ramos, B., Sheldon, E., De Simoni, F., Skibba, R., ... Weinberg, D. H. (2011). The clustering of massive galaxies at z ∼ 0.5 from the first semester of BOSS data. Astrophysical Journal, 728(2). https://doi.org/10.1088/0004-637X/728/2/126