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Title:
Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
Authors:
Eisenstein, Daniel J.; Zehavi, Idit; Hogg, David W.; Scoccimarro, Roman; Blanton, Michael R.; Nichol, Robert C.; Scranton, Ryan; Seo, Hee-Jong; Tegmark, Max; Zheng, Zheng; Anderson, Scott F.; Annis, Jim; Bahcall, Neta; Brinkmann, Jon; Burles, Scott; Castander, Francisco J.; Connolly, Andrew; Csabai, Istvan; Doi, Mamoru; Fukugita, Masataka; Frieman, Joshua A.; Glazebrook, Karl; Gunn, James E.; Hendry, John S.; Hennessy, Gregory; Ivezic, Zeljko; Kent, Stephen; Knapp, Gillian R.; Lin, Huan; Loh, Yeong-Shang; Lupton, Robert H.; Margon, Bruce; McKay, Timothy A.; Meiksin, Avery; Munn, Jeffery A.; Pope, Adrian; Richmond, Michael W.; Schlegel, David; Schneider, Donald P.; Shimasaku, Kazuhiro; Stoughton, Christopher; Strauss, Michael A.; SubbaRao, Mark; Szalay, Alexander S.; Szapudi, István; Tucker, Douglas L.; Yanny, Brian; York, Donald G.
Affiliation:
AA(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85121; Alfred P. Sloan Fellow.), AB(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85121.), AC(Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003.), AD(Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003.), AE(Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003.), AF(Institute of Cosmology and Gravitation, Mercantile House, Hampshire Terrace, University of Portsmouth, Portsmouth P01 2EG, UK.), AG(Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260.), AH(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85121.), AI(Department of Physics, University of Pennsylvania, Philadelphia, PA 19104; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139.), AJ(School of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540.), AK(Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580.), AL(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), AM(Princeton University Observatory, Peyton Hall, Princeton, NJ 08544.), AN(Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349.), AO(Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139.), AP(Institut d'Estudis Espacials de Catalunya/CSIC, Gran Capità 2-4, E-08034 Barcelona, Spain.), AQ(Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260.), AR(Department of Physics of Complex Systems, Eötvös University, Pázmány Péter sétány 1, H-1518 Budapest, Hungary.), AS(Institute of Astronomy, School of Science, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan.), AT(Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan.), AU(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510; University of Chicago, Astronomy and Astrophysics Center, 5640 South Ellis Avenue, Chicago, IL 60637.), AV(Department of Physics and Astronomy, Johns Hopkins University, 3701 San Martin Drive, Baltimore, MD 21218.), AW(Princeton University Observatory, Peyton Hall, Princeton, NJ 08544.), AX(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), AY(United States Naval Observatory, Flagstaff Station, P.O. Box 1149, Flagstaff, AZ 86002.), AZ(Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580.), BA(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), BB(Princeton University Observatory, Peyton Hall, Princeton, NJ 08544.), BC(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), BD(Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80803.), BE(Princeton University Observatory, Peyton Hall, Princeton, NJ 08544.), BF(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218.), BG(Department of Physics, University of Michigan, Ann Arbor, MI 48109-1120.), BH(Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK.), BI(United States Naval Observatory, Flagstaff Station, P.O. Box 1149, Flagstaff, AZ 86002.), BJ(Department of Physics and Astronomy, Johns Hopkins University, 3701 San Martin Drive, Baltimore, MD 21218.), BK(Department of Physics, Rochester Institute of Technology, 85 Lomb Memorial Drive, Rochester, NY 14623-5603.), BL(Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 50R-5032, Berkeley, CA 94720-8160.), BM(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802.), BN(Department of Astronomy, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.), BO(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), BP(Princeton University Observatory, Peyton Hall, Princeton, NJ 08544.), BQ(University of Chicago, Astronomy and Astrophysics Center, 5640 South Ellis Avenue, Chicago, IL 60637; Adler Planetarium, 1300 South Lake Shore Drive, Chicago, IL 60605.), BR(Department of Physics and Astronomy, Johns Hopkins University, 3701 San Martin Drive, Baltimore, MD 21218.), BS(Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822.), BT(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), BU(Fermilab National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510.), BV(University of Chicago, Astronomy and Astrophysics Center, 5640 South Ellis Avenue, Chicago, IL 60637.)
Publication:
The Astrophysical Journal, Volume 633, Issue 2, pp. 560-574. (ApJ Homepage)
Publication Date:
11/2005
Origin:
UCP
Astronomy Keywords:
Cosmology: Cosmic Microwave Background, Cosmology: Cosmological Parameters, Cosmology: Observations, Cosmology: Distance Scale, Galaxies: Elliptical and Lenticular, cD, Cosmology: Large-Scale Structure of Universe
DOI:
10.1086/466512
Bibliographic Code:
2005ApJ...633..560E

Abstract

We present the large-scale correlation function measured from a spectroscopic sample of 46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers 0.72 h-3 Gpc3 over 3816 deg2 and 0.16<z<0.47, making it the best sample yet for the study of large-scale structure. We find a well-detected peak in the correlation function at 100 h-1 Mpc separation that is an excellent match to the predicted shape and location of the imprint of the recombination-epoch acoustic oscillations on the low-redshift clustering of matter. This detection demonstrates the linear growth of structure by gravitational instability between z~1000 and the present and confirms a firm prediction of the standard cosmological theory. The acoustic peak provides a standard ruler by which we can measure the ratio of the distances to z=0.35 and z=1089 to 4% fractional accuracy and the absolute distance to z=0.35 to 5% accuracy. From the overall shape of the correlation function, we measure the matter density Omegamh2 to 8% and find agreement with the value from cosmic microwave background (CMB) anisotropies. Independent of the constraints provided by the CMB acoustic scale, we find Omegam=0.273+/-0.025+0.123(1+w0)+0.137OmegaK. Including the CMB acoustic scale, we find that the spatial curvature is OmegaK=-0.010+/-0.009 if the dark energy is a cosmological constant. More generally, our results provide a measurement of cosmological distance, and hence an argument for dark energy, based on a geometric method with the same simple physics as the microwave background anisotropies. The standard cosmological model convincingly passes these new and robust tests of its fundamental properties.
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