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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: BAO measurement from the LOS-dependent power spectrum of DR12 BOSS galaxies | | Héctor Gil-Marín
; Will J. Percival
; Antonio J. Cuesta
; Joel R. Brownstein
; Chia-Hsun Chuang
; Shirley Ho
; Francisco-Shu Kitaura
; Claudia Maraston
; Francisco Prada
; Sergio Rodríguez-Torres
; Ashely J. Ross
; David J. Schlegel
; Donald P. Schneider
; Daniel Thomas
; Jeremy L. Tinker
; Rita Tojeiro
; Mariana Vargas Magaña
; Gong-Bo Zhao
; | | Date: |
21 Sep 2015 | | Abstract: | [abridged] We present an anisotropic analysis of the baryonic acoustic
oscillation (BAO) scale in the twelfth and final data release of the Baryonic
Oscillation Spectroscopic Survey (BOSS). We independently analyse the LOWZ and
CMASS galaxy samples: the LOWZ sample contains contains 361,762 galaxies with
an effective redshift of $z_{
m LOWZ}=0.32$, and the CMASS sample consists of
777,202 galaxies with an effective redshift of $z_{
m CMASS}=0.57$. We
extract the BAO peak position from the monopole power spectrum moment,
$alpha_0$, and from the $mu^2$ moment, $alpha_2$. We report $H(z_{
m
LOWZ})r_s(z_d)=(11.64pm0.62)cdot10^3,{
m km}s^{-1}$ and $D_A(z_{
m
LOWZ})/r_s(z_d)=6.85pm0.17$ with a cross-correlation coefficient of
$r_{HD_A}=0.42$, for the LOWZ sample; and $H(z_{
m
CMASS})r_s(z_d)=(14.56pm0.38)cdot10^3,{
m km}s^{-1}$ and $D_A(z_{
m
CMASS})/r_s(z_d)=9.42pm0.13$ with a cross-correlation coefficient of
$r_{HD_A}=0.51$, for the CMASS sample. We combine these results with the
measurements of the BAO peak position in the monopole and quadrupole
correlation function of the same dataset citep[][companion
paper]{Cuestaetal2015} and report the consensus values: $H(z_{
m
LOWZ})r_s(z_d)=(11.64pm0.70)cdot10^3,{
m km}s^{-1}$ and $D_A(z_{
m
LOWZ})/r_s(z_d)=6.76pm0.15$ with $r_{HD_A}=0.35$ for the LOWZ sample; and
$H(z_{
m CMASS})r_s(z_d)=(14.66pm0.42)cdot10^3,{
m km}s^{-1}$ and
$D_A(z_{
m CMASS})/r_s(z_d)=9.47pm0.13$ with $r_{HD_A}=0.54$ for the CMASS
sample. | | Source: | arXiv, 1509.6373 | | Services: | Forum | Review | PDF | Favorites | |
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