Статья

Cosmological constraints from the SDSS luminous red galaxies

Max TegmarkDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USADaniel J. EisensteinDepartment of Astronomy, University of Arizona, Tucson, Arizona 85721, USAMichael A. StraussPrinceton University Observatory, Princeton, New Jersey 08544, USADavid H. WeinbergDepartment of Astronomy, Ohio State University, Columbus, Ohio 43210, USAMichael R. BlantonCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, New York 10003, USAJoshua A. FriemanCenter for Cosmological Physics and Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USAM. FukugitaInstitute for Cosmic Ray Research, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8582, JapanJames E. GunnPrinceton University Observatory, Princeton, New Jersey 08544, USAA. HamiltonJILA and Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, Colorado 80309, USAG. R. KnappPrinceton University Observatory, Princeton, New Jersey 08544, USARobert C. NicholInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, P01 2EG, United KingdomJeremiah P. OstrikerPrinceton University Observatory, Princeton, New Jersey 08544, USANikhil PadmanabhanDepartment of Physics, Princeton University, Princeton, New Jersey 08544, USAWill J. PercivalInstitute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, P01 2EG, United KingdomDavid J. SchlegelLawrence Berkeley National Laboratory, Berkeley, California 94720, USADonald P. SchneiderDepartment of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USARomán ScoccimarroCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, New York 10003, USAUroš SeljakDepartment of Physics, Princeton University, Princeton, New Jersey 08544, USAHee‐Jong SeoDepartment of Astronomy, University of Arizona, Tucson, Arizona 85721, USAM. E. C. SwansonDepartment of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USAAlexander S. SzalayDepartment of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, Maryland 21218, USAMichael S. VogeleyDepartment of Physics, Drexel University, Philadelphia, Pennsylvania 19104, USAJaiyul YooDepartment of Astronomy, Ohio State University, Columbus, Ohio 43210, USAIdit ZehaviDepartment of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106-7215, USAKevork N. AbazajianTheoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USAScott F. AndersonDepartment of Astronomy, University of Washington, Box 351580, Seattle, Washington 98195, USAJames AnnisFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USANeta A. BahcallPrinceton University Observatory, Princeton, New Jersey 08544, USABruce A. BassettApplied Mathematics Department, University of Cape Town, Cape Town, South AfricaAndreas A. BerlindCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, New York 10003, USAJ. BrinkmannTamás BudaváriDepartment of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, Maryland 21218, USAF. J. CastanderInstitut d’Estudis Espacials de Catalunya/CSIC, Campus UAB, 08034 Barcelona, SpainAndrew J. ConnollyUniversity of Pittsburgh, Department of Physics and Astronomy, 3941 O’Hara Street, Pittsburgh, Pennsylvania 15260, USAIstván CsabaiDepartment of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, Maryland 21218, USAMamoru DoiInstitute of Astronomy, University of Tokyo, Osawa 2-21-1, Mitaka, Tokyo, 181-0015, JapanDouglas P. FinkbeinerHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS46, Cambridge, Massachusetts 02138, USABruce GillespieKarl GlazebrookDepartment of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, Maryland 21218, USAG. S. HennessyU.S. Naval Observatory, Flagstaff Station, 10391 W. Naval Observatory Road, Flagstaff, Arizona 86001-8521, USADavid W. HoggCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, New York 10003, USAŽeljko IvezićDepartment of Astronomy, University of Washington, Box 351580, Seattle, Washington 98195, USABhuvnesh JainDepartment of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USADavid JohnstonCalifornia Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USAS. KentFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USADonald Q. LambCenter for Cosmological Physics and Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USABrian LeeGatan Inc., Pleasanton, California 94588, USAH. LinFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USAJ. LovedaySussex Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QJ, UKRobert H. LuptonPrinceton University Observatory, Princeton, New Jersey 08544, USAJeffrey A. MunnU.S. Naval Observatory, Flagstaff Station, 10391 W. Naval Observatory Road, Flagstaff, Arizona 86001-8521, USAKaike PanChangbom ParkDepartment of Astronomy, Seoul National University, 151-742, KoreaJ. PeoplesFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USAJeffrey R. PierU.S. Naval Observatory, Flagstaff Station, 10391 W. Naval Observatory Road, Flagstaff, Arizona 86001-8521, USAAdrian PopeDepartment of Physics and Astronomy, The Johns Hopkins University, 3701 San Martin Drive, Baltimore, Maryland 21218, USAM. RichmondPhysics Department, Rochester Institute of Technology, 1 Lomb Memorial Dr, Rochester, New York 14623, USAConstance M. RockosiCenter for Cosmological Physics and Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USARyan ScrantonUniversity of Pittsburgh, Department of Physics and Astronomy, 3941 O’Hara Street, Pittsburgh, Pennsylvania 15260, USARavi K. ShethDepartment of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USAAlbert StebbinsFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USAChristopher StoughtonFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USAI. SzapudiInstitute for Astronomy, University of Hawaii, 2680, Woodlawn Drive, Honolulu, Hawaii 96822, USAD. L. TuckerFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USAD. E. vanden BerkUniversity of Pittsburgh, Department of Physics and Astronomy, 3941 O’Hara Street, Pittsburgh, Pennsylvania 15260, USAB. YannyFermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USADonald G. YorkCenter for Cosmological Physics and Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USA

2006en

ABI

Аннотация

We measure the large-scale real-space power spectrum $P(k)$ using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological parameters from the Wilkinson Microwave Anisotropy Probe (WMAP). We employ a matrix-based power spectrum estimation method using Pseudo-Karhunen-Lo\`eve eigenmodes, producing uncorrelated minimum-variance measurements in 20 $k$-bands of both the clustering power and its anisotropy due to redshift-space distortions, with narrow and well-behaved window functions in the range $0.01h/\mathrm{Mpc}<k<0.2h/\mathrm{Mpc}$. Results from the LRG and main galaxy samples are consistent, with the former providing higher signal-to-noise. Our results are robust to omitting angular and radial density fluctuations and are consistent between different parts of the sky. They provide a striking confirmation of the predicted large-scale $\ensuremath{\Lambda}\mathrm{CDM}$ power spectrum. Combining only SDSS LRG and WMAP data places robust constraints on many cosmological parameters that complement prior analyses of multiple data sets. The LRGs provide independent cross-checks on ${\ensuremath{\Omega}}_{m}$ and the baryon fraction in good agreement with WMAP. Within the context of flat $\ensuremath{\Lambda}\mathrm{CDM}$ models, our LRG measurements complement WMAP by sharpening the constraints on the matter density, the neutrino density and the tensor amplitude by about a factor of 2, giving ${\ensuremath{\Omega}}_{m}=0.24\ifmmode\pm\else\textpm\fi{}0.02$ ($1\ensuremath{\sigma}$), $\ensuremath{\sum}_{}^{}{m}_{\ensuremath{\nu}}\ensuremath{\lesssim}0.9\text{ }\text{ }\mathrm{eV}$ (95%) and $r<0.3$ (95%). Baryon oscillations are clearly detected and provide a robust measurement of the comoving distance to the median survey redshift $z=0.35$ independent of curvature and dark energy properties. Within the $\ensuremath{\Lambda}\mathrm{CDM}$ framework, our power spectrum measurement improves the evidence for spatial flatness, sharpening the curvature constraint ${\ensuremath{\Omega}}_{\mathrm{tot}}=1.05\ifmmode\pm\else\textpm\fi{}0.05$ from WMAP alone to ${\ensuremath{\Omega}}_{\mathrm{tot}}=1.003\ifmmode\pm\else\textpm\fi{}0.010$. Assuming ${\ensuremath{\Omega}}_{\mathrm{tot}}=1$, the equation of state parameter is constrained to $w=\ensuremath{-}0.94\ifmmode\pm\else\textpm\fi{}0.09$, indicating the potential for more ambitious future LRG measurements to provide precision tests of the nature of dark energy. All these constraints are essentially independent of scales $k>0.1h/\mathrm{Mpc}$ and associated nonlinear complications, yet agree well with more aggressive published analyses where nonlinear modeling is crucial.

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Идентификаторы

DOI: 10.1103/physrevd.74.123507

Цитирования и источники

Цитирований: 4Использованных источников: 0

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