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Measurement of BAO correlations at with SDSS DR12 \lya-Forests
Julian E. Bautista, Nicolás G. Busca, Julien Guy +24
We use flux-transmission correlations in \Lya forests to measure the imprint of baryon acoustic oscillations (BAO). The study uses spectra of 157,783 quasars in the redshift range…
Exploring cosmic homogeneity with the BOSS DR12 galaxy sample
Pierros Ntelis, Jean-Christophe Hamilton, Jean-Marc Le Goff +16
In this study, we probe the transition to cosmic homogeneity in the Large Scale Structure (LSS) of the Universe using the CMASS galaxy sample of BOSS spectroscopic survey which cov…
A 14 Gpc study of cosmic homogeneity using BOSS DR12 quasar sample
Pierre Laurent, Jean-Marc Le Goff, Etienne Burtin +16
The BOSS quasar sample is used to study cosmic homogeneity with a 3D survey in the redshift range . We measure the count-in-sphere, , i.e. the average number o…
The extended Baryon Oscillation Spectroscopic Survey (eBOSS): a cosmological forecast
Gong-Bo Zhao, Yuting Wang, Ashley J. Ross +28
We present a science forecast for the eBOSS survey, part of the SDSS-IV project, which is a spectroscopic survey using multiple tracers of large-scale structure, including luminous…
SDSS-IV eBOSS emission-line galaxy pilot survey
J. Comparat, T. Delubac, S. Jouvel +83
The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195,000 emission-line galaxies (ELGs) to measure the Baryonic Acoust…
The SDSS-IV extended Baryonic Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection
Abhishek Prakash, Timothy C. Licquia, Jeffrey A. Newman +26
We describe the algorithm used to select the Luminous Red Galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (S…
The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
Kyle S. Dawson, Jean-Paul Kneib, Will J. Percival +143
The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations will…
Clustering properties of -selected galaxies at
Ginevra Favole, Johan Comparat, Francisco Prada +15
Current and future large redshift surveys, as the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) or the Dark Energy Spectroscopic Inst…
Large-scale clustering of Lyman-alpha emission intensity from SDSS/BOSS
Rupert A. C. Croft, Jordi Miralda-Escudé, Zheng Zheng +25
(Abridged) We detect the large-scale structure of Lya emission in the Universe at redshifts z=2-3.5 by measuring the cross-correlation of Lya surface brightness with quasars in SDS…
Cosmological implications of baryon acoustic oscillation (BAO) measurements
Éric Aubourg, Stephen Bailey, Julian E. Bautista +90
We derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwave backgr…
Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
Timothée Delubac, Julian E. Bautista, Nicolás G. Busca +35
We report a detection of the baryon acoustic oscillation (BAO) feature in the flux-correlation function of the Lyα forest of high-redshift quasars with a statistical significance o…
The one-dimensional Ly-alpha forest power spectrum from BOSS
Nathalie Palanque-Delabrouille, Christophe Yèche, Arnaud Borde +33
We have developed two independent methods to measure the one-dimensional power spectrum of the transmitted flux in the Lyman- forest. The first method is based on a Fourier tran…
Fitting Methods for Baryon Acoustic Oscillations in the Lyman-α Forest Fluctuations in BOSS Data Release 9
David Kirkby, Daniel Margala, Anže Slosar +22
We describe fitting methods developed to analyze fluctuations in the Lyman-α forest and measure the parameters of baryon acoustic oscillations (BAO). We apply our methods to BOSS D…
Measurement of Baryon Acoustic Oscillations in the Lyman-alpha Forest Fluctuations in BOSS Data Release 9
Anže Slosar, Vid Iršič, David Kirkby +41
We use the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 9 (DR9) to detect and measure the position of the Baryonic Acoustic Oscillation (BAO) feature in the three-di…
The BOSS Lyman-alpha Forest Sample from SDSS Data Release 9
Khee-Gan Lee, Stephen Bailey, Leslie E. Bartsch +50
We present the BOSS Lyman-alpha (Lya) Forest Sample from SDSS Data Release 9, comprising 54,468 quasar spectra with zqso > 2.15 suitable for Lya forest analysis. This data set prob…
Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
Nicolás G. Busca, Timothée Delubac, James Rich +59
We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \Lya forest of high-red…
The Sloan Digital Sky Survey quasar catalog: ninth data release
Isabelle Pâris, Patrick Petitjean, Eric Aubourg +73
We present the Data Release 9 Quasar (DR9Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objec…
The Baryon Oscillation Spectroscopic Survey of SDSS-III
Kyle S. Dawson, David J. Schlegel, Christopher P. Ahn +162
The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the…
Simulations of BAO reconstruction with a quasar Lyman-alpha survey
J. -M. Le Goff, C. Magneville, E. Rollinde +13
The imprint of Baryonic Acoustic Oscillations (BAO) on the matter power spectrum can be constrained using the neutral hydrogen density in the intergalactic medium as a tracer of th…
A Principal Component Analysis of quasar UV spectra at z~3
I. Pâris, P. Petitjean, E. Rollinde +12
From a Principal Component Analysis (PCA) of 78 z~3 high quality quasar spectra in the SDSS-DR7, we derive the principal components characterizing the QSO continuum over the full w…