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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Measuring D_A and H at z=0.57 from the Baryon Acoustic Peak in th…

2014

We present measurements of the angular diameter distance to and Hubble parameter at z = 0.57 from the measurement of the baryon acoustic peak in the correlation of galaxies from the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey. Our analysis is based on a sample from Data Release 9 of 264 283 galaxies over 3275 square degrees in the redshift range 0.43 z DA(0.57) = 1408 ± 45 Mpc and H(0.57) = 92.9 ± 7.8 km s-1 Mpc-1 for our fiducial value of the sound horizon. These results from the anisotropic fitting are fully consistent with the analysis of the spherically averaged acoustic peak position presented in Anderson et al. Our distance measurements are a close match to th…

Cosmology and GravitationCosmology and Nongalactic Astrophysics (astro-ph.CO)Cosmological parametersDark matterLarge scale structure of UniverseFOS: Physical sciencesLambda-CDM modelAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsExpanding universesymbols.namesakeExpansió de l'universObservacions astronòmiquesDark energyQB Astronomyobservations [Cosmology]QCComputingMilieux_MISCELLANEOUSAstrophysics::Galaxy AstrophysicsQB/dk/atira/pure/core/subjects/cosmologyPhysics[PHYS]Physics [physics]Distance scaleCosmologiaAngular diameter distanceFísicaAstronomy and AstrophysicsRedshiftGalaxyCosmologyBaryonQC PhysicsSpace and Planetary ScienceDark energysymbols[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Astrophysics - Cosmology and Nongalactic AstrophysicsHubble's lawAstronomical observations
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