TY - JOUR
T1 - The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey
T2 - RSD measurement from the LOS-dependent power spectrum of DR12 BOSS galaxies
AU - Gil-Marín, Héctor
AU - Percival, Will J.
AU - Brownstein, Joel R.
AU - Chuang, Chia-Hsun
AU - Grieb, Jan Niklas
AU - Ho, Shirley
AU - Kitaura, Francisco-Shu
AU - Maraston, Claudia
AU - Prada, Francisco
AU - Rodríguez-Torres, Sergio
AU - Ross, Ashley J.
AU - Samushia, Lado
AU - Schlegel, David J.
AU - Thomas, Daniel
AU - Tinker, Jeremy L.
AU - Zhao, Gong-Bo
N1 - 23 pages, 15 figures. Submitted for publication to MNRAS
PY - 2016/8/21
Y1 - 2016/8/21
N2 - We measure and analyse the clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) relative to the line-of-sight (LOS), for LOWZ and CMASS galaxy samples drawn from the final Data Release 12 (DR12). The LOWZ sample contains 361\,762 galaxies with an effective redshift of zlowz=0.32, and the CMASS sample 777\,202 galaxies with an effective redshift of zcmass=0.57. From the power spectrum monopole and quadrupole moments around the LOS, we measure the growth of structure parameter f times the amplitude of dark matter density fluctuations σ8 by modeling the Redshift-Space Distortion signal. When the geometrical Alcock-Paczynski effect is also constrained from the same data, we find joint constraints on fσ8, the product of the Hubble constant and the comoving sound horizon at the baryon drag epoch H(z)rs(zd), and the angular distance parameter divided by the sound horizon DA(z)/rs(zd). We find f(zlowz)σ8(zlowz)=0.394±0.062, DA(zlowz)/rs(zd)=6.35±0.19, H(zlowz)rs(zd)=(11.41±0.56)103kms−1 for the LOWZ sample, and f(zcmass)σ8(zcmass)=0.444±0.038, DA(zcmass)/rs(zd)=9.42±0.15, H(zcmass)rs(zd)=(13.92±0.44)103kms−1 for the CMASS sample. We find general agreement with previous BOSS DR11 measurements. Assuming the Hubble parameter and angular distance parameter are fixed at fiducial ΛCDM values, we find f(zlowz)σ8(zlowz)=0.485±0.044 and f(zcmass)σ8(zcmass)=0.436±0.022 for the LOWZ and CMASS samples, respectively.
AB - We measure and analyse the clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) relative to the line-of-sight (LOS), for LOWZ and CMASS galaxy samples drawn from the final Data Release 12 (DR12). The LOWZ sample contains 361\,762 galaxies with an effective redshift of zlowz=0.32, and the CMASS sample 777\,202 galaxies with an effective redshift of zcmass=0.57. From the power spectrum monopole and quadrupole moments around the LOS, we measure the growth of structure parameter f times the amplitude of dark matter density fluctuations σ8 by modeling the Redshift-Space Distortion signal. When the geometrical Alcock-Paczynski effect is also constrained from the same data, we find joint constraints on fσ8, the product of the Hubble constant and the comoving sound horizon at the baryon drag epoch H(z)rs(zd), and the angular distance parameter divided by the sound horizon DA(z)/rs(zd). We find f(zlowz)σ8(zlowz)=0.394±0.062, DA(zlowz)/rs(zd)=6.35±0.19, H(zlowz)rs(zd)=(11.41±0.56)103kms−1 for the LOWZ sample, and f(zcmass)σ8(zcmass)=0.444±0.038, DA(zcmass)/rs(zd)=9.42±0.15, H(zcmass)rs(zd)=(13.92±0.44)103kms−1 for the CMASS sample. We find general agreement with previous BOSS DR11 measurements. Assuming the Hubble parameter and angular distance parameter are fixed at fiducial ΛCDM values, we find f(zlowz)σ8(zlowz)=0.485±0.044 and f(zcmass)σ8(zcmass)=0.436±0.022 for the LOWZ and CMASS samples, respectively.
KW - astro-ph.CO
KW - cosmology: theory
KW - cosmology: cosmological parameters
KW - cosmology: large-scale structure of Universe
KW - galaxies: haloes
KW - RCUK
KW - STFC
KW - ST/I001204/1
U2 - 10.1093/mnras/stw1096
DO - 10.1093/mnras/stw1096
M3 - Article
SN - 0035-8711
VL - 460
SP - 4188
EP - 4209
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -