The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
Creators: name: Dawson, Kyle S.
name: Kneib, Jean-Paul
name: Percival, Will J.
name: Alam, Shadab
name: Albareti, Franco D.
name: Anderson, Scott F.
name: Armengaud, Eric
name: Aubourg, Eric
name: Bailey, Stephen
name: Bautista, Julian E.
name: Berlind, Andreas A.
name: Bershady, Matthew A.
name: Beutler, Florian
name: Bizyaev, Dmitry
name: Blanton, Michael R.
name: Blomqvist, Michael
name: Bolton, Adam S.
name: Bovy, Jo
name: Brandt, W. N.
name: Brinkmann, Jon
name: Brownstein, Joel R.
name: Burtin, Etienne
name: Busca, N. G.
name: Cai, Zheng
name: Chuang, Chia-Hsun
name: Clerc, Nicolas
name: Comparat, Johan
name: Cope, Frances
name: Croft, Rupert A. C.
name: Cruz-Gonzalez, Irene
name: da Costa, Luiz N.
name: Cousinou, Marie-Claude
name: Darling, Jeremy
name: de la Macorra, Axel
name: de la Torre, Sylvain
name: Delubac, Timothee
name: Bourboux, Helion du Mas des
name: Dwelly, Tom
name: Ealet, Anne
name: Eisenstein, Daniel J.
name: Eracleous, Michael
name: Escoffier, S.
name: Fan, Xiaohui
name: Finoguenov, Alexis
name: Font-Ribera, Andreu
name: Frinchaboy, Peter
name: Gaulme, Patrick
name: Georgakakis, Antonis
name: Green, Paul
name: Guo, Hong
name: Guy, Julien
name: Ho, Shirley
name: Holder, Diana
name: Huehnerhoff, Joe
name: Hutchinson, Timothy
name: Jing, Yipeng
name: Jullo, Eric
name: Kamble, Vikrant
name: Kinemuchi, Karen
name: Kirkby, David
name: Kitaura, Francisco-Shu
name: Klaene, Mark A.
name: Laher, Russ R.
name: Lang, Dustin
name: Laurent, Pierre
name: Goff, Jean-Marc Le
name: Li, Cheng
name: Liang, Yu
name: Lima, Marcos
name: Lin, Qiufan
name: Lin, Weipeng
name: Lin, Yen-Ting
name: Long, Daniel C.
name: Lundgren, Britt
name: MacDonald, Nicholas
name: Maia, Marcio Antonio Geimba
name: Malanushenko, Elena
name: Malanushenko, Viktor
name: Mariappan, Vivek
name: McBride, Cameron K.
name: McGreer, Ian D.
name: Menard, Brice
name: Merloni, Andrea
name: Meza, Andres
name: Montero-Dorta, Antonio D.
name: Muna, Demitri
name: Myers, Adam D.
name: Nandra, Kirpal
name: Naugle, Tracy
name: Newman, Jeffrey A.
name: Noterdaeme, Pasquier
name: Nugent, Peter
name: Ogando, Ricardo
name: Olmstead, Matthew D.
name: Oravetz, Audrey
name: Oravetz, Daniel J.
name: Padmanabhan, Nikhil
name: Palanque-Delabrouille, Nathalie
name: Pan, Kaike
name: Parejko, John K.
name: Paris, Isabelle
name: Peacock, John A.
name: Petitjean, Patrick
name: Pieri, Matthew M.
name: Pisani, Alice
name: Prada, Francisco
name: Prakash, Abhishek
name: Raichoor, Anand
name: Reid, Beth
name: Rich, James
name: Ridl, Jethro
name: Rodriguez-Torres, Sergio
name: Rosell, Aurelio Carnero
name: Ross, Ashley J.
name: Rossi, Graziano
name: Ruan, John
name: Salvato, Mara
name: Sayres, Conor
name: Schneider, Donald P.
name: Schlegel, David J.
name: Seljak, Uros
name: Seo, Hee-Jong
name: Sesar, Branimir
name: Shandera, Sarah
name: Shu, Yiping
name: Slosar, Anze
name: Sobreira, Flavia
name: Streblyanska, Alina
name: Suzuki, Nao
name: Tao, Charling
name: Taylor, Donna
name: Tinker, Jeremy L.
name: Tojeiro, Rita
name: Vargas-Magana, Mariana
name: Wang, Yuting
name: Weaver, Benjamin A.
name: Weinberg, David H.
name: White, Martin
name: Wood-Vasey, W. M.
name: Yeche, Christophe
name: Zhai, Zhongxu
name: Zhao, Cheng
name: Zhao, Gong-bo
name: Zheng, Zheng
name: Zhu, Guangtun Ben
name: Zou, Hu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations will be simultaneous with the Time Domain Spectroscopic Survey (TDSS) designed for variability studies and the Spectroscopic Identification of eROSITA Sources (SPIDERS) program designed for studies of X-ray sources. eBOSS will use four different tracers to measure the distance-redshift relation with baryon acoustic oscillations (BAO). Using more than 250,000 new, spectroscopically confirmed luminous red galaxies at a median redshift z=0.72, we project that eBOSS will yield measurements of $d_A(z)$ to an accuracy of 1.2% and measurements of H(z) to 2.1% when combined with the z&gt;0.6 sample of BOSS galaxies. With ~195,000 new emission line galaxy redshifts, we expect BAO measurements of $d_A(z)$ to an accuracy of 3.1% and H(z) to 4.7% at an effective redshift of z= 0.87. A sample of more than 500,000 spectroscopically-confirmed quasars will provide the first BAO distance measurements over the redshift range 0.92.1; these new data will enhance the precision of $d_A(z)$ and H(z) by a factor of 1.44 relative to BOSS. Furthermore, eBOSS will provide improved tests of General Relativity on cosmological scales through redshift-space distortion measurements, improved tests for non-Gaussianity in the primordial density field, and new constraints on the summed mass of all neutrino species. Here, we provide an overview of the cosmological goals, spectroscopic target sample, demonstration of spectral quality from early data, and projected cosmological constraints from eBOSS.
description: 39 pages, 13 figures, accepted AJ, revised for consistency with accepted version