THE NINTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY: FIRST SPECTROSCOPIC DATA FROM THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY

The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median z ~ 0.52), 102,100 new quasar spectra (median z ~ 2.32), and 90,897 new stellar spectra, along with the data presented in previous data releases. These spectra were obtained with the new BOSS spectrograph and were taken between 2009 December and 2011 July. In addition, the stellar parameters pipeline, which determines radial velocities, surface temperatures, surface gravities, and metallicities of stars, has been updated and refined with improvements in temperature estimates for stars with T eff -0.5. DR9 includes new stellar parameters for all stars presented in DR8, including stars from SDSS-I and II, as well as those observed as part of the SEGUE-2. The astrometry error introduced in the DR8 imaging catalogs has been corrected in the DR9 data products. The next data release for SDSS-III will be in Summer 2013, which will present the first data from the APOGEE along with another year of data from BOSS, followed by the final SDSS-III data release in 2014 December.

W. M. Wood-Vasey | David W. Harris | J. Zinn | A. Myers | A. Slosar | Daniel Thomas | M. Raddick | R. Nichol | D. York | J. Brinkmann | A. Thakar | Ž. Ivezić | G. Richards | D. Schneider | A. Ealet | W. Percival | J. Kneib | L. Verde | C. Prieto | S. Anderson | B. Andrews | J. Bautista | T. Beers | V. Bhardwaj | D. Bizyaev | C. Blake | M. Blanton | M. Blomqvist | J. Bochanski | A. Bolton | J. Bovy | P. Brown | J. Brownstein | N. Busca | C. Chiappini | J. Comparat | R. Croft | A. Cuesta | L. Costa | J. Davenport | K. Dawson | N. D. Lee | T. Delubac | G. Ebelke | E. Edmondson | D. Eisenstein | S. Escoffier | M. Esposito | Xiaohui Fan | N. F. Ak | H. Finley | S. Fleming | A. Font-Ribera | P. Frinchaboy | D. A. Garc'ia-Hern'andez | J. Ge | R. G'enova-Santos | B. Gillespie | L. Girardi | J. G. Hern'andez | E. Grebel | J. Gunn | Hong Guo | S. Hawley | F. Hearty | S. Ho | D. Hogg | J. Holtzman | K. Honscheid | J. Huehnerhoff | Linhua Jiang | Jennifer A. Johnson | D. Kirkby | M. Klaene | J. M. Goff | A. Leauthaud | K. Lee | Young Sun Lee | D. Long | S. Lucatello | B. Lundgren | R. Lupton | C. Mack | S. Mahadevan | M. Maia | S. Majewski | E. Malanushenko | V. Malanushenko | A. Manchado | M. Manera | C. Maraston | D. Margala | S. Martell | C. McBride | I. McGreer | R. McMahon | B. M'enard | A. Montero-Dorta | H. Morrison | D. Muna | D. Nguyen | D. Nidever | P. Noterdaeme | S. E. Nuza | R. Ogando | M. Olmstead | D. Oravetz | R. Owen | N. Padmanabhan | N. Palanque-Delabrouille | K. Pan | J. Parejko | I. Pâris | P. Pattarakijwanich | J. Pepper | I. P'erez-Fournon | P. Petitjean | M. Pieri | M. Pinsonneault | G. P. D. Mello | F. Prada | A. Price-Whelan | J. Rich | A. Robin | Constance M. Rockosi | N. Roe | A. Ross | N. Ross | G. Rossi | L. Samushia | Ariel G. S'anchez | B. Santiago | C. Sayres | D. Schlegel | S. Schmidt | M. Schultheis | A. Schwope | C. Sc'occola | Yue Shen | Y. Shu | M. Skrutskie | F. Sobreira | K. Stassun | M. Steinmetz | M. Strauss | A. Streblyanska | M. Swanson | B. Thompson | J. Tinker | R. Tojeiro | M. Viel | N. Vogt | D. Wake | Ji Wang | B. Weaver | D. Weinberg | B. Weiner | M. White | John C. Wilson | J. Wisniewski | W. Wood-Vasey | C. Yèche | O. Zamora | G. Zasowski | I. Zehavi | Gong-Bo Zhao | Zheng Zheng | G. Zhu | R. Mandelbaum | J. Munn | E. Aubourg | E. Balbinot | A. Berlind | W. Brandt | W. Carithers | M. Carr | Yan-mei Chen | N. Connolly | S. Dhital | M. Evans | B. F. Castellá | L. Ferreira | J. Hamilton | D. Harris | J. G. Hernández | I. Ivans | G. Kauffmann | C. Loomis | B. Ma | Zhibo Ma | N. MacDonald | M. Makler | H. Murayama | A. F. Neto | J. Pforr | H. Rocha-Pinto | K. Schlesinger | E. Sheldon | J. Simmerer | A. Simmons | O. Steele | C. Tremonti | M. V. Magaña | B. Yanny | R. Rebolo | N. Suzuki | J. Crepp | U. Seljak | G. Knapp | R. Skibba | S. Cristiani | A. West | Stephen Bailey | J. Rubiño-Martín | Christopher P. Ahn | A. Beifiori | A. Borde | K. Bundy | A. Carnero | R. D. Putter | D. Haggard | J. Miralda-Escud'e | F. Montesano | T. Tal | R. Barnes | J. G. González Hernández | J. Sobeck | J. Almeida | S. Mészáros | J. Johansson | Prachi Parihar | J. Kirkpatrick | C. Scóccola | R. Alexandroff | Timothy Anderton | B. F. Castell'a | Emma Fern'andez Alvar | SDSS-III Collaboration Christopher P. Ahn | 'Eric Aubourg Stephen Bailey | D. Casetti-Dinescu | A. P'erez | Z. Ivezi'c | H. Jacobson | Ignasi P'erez-R'afols | S. Vikas | Nathan De Lee | C. Allende Prieto | B. Femenía Castellá | L. da Costa | C. E. Mack | Nathan De Lee | N. Filiz Ak | J. Le Goff | J. Sánchez Almeida | C. Rockosi | X. Fan | M. Strauss | D. Schneider | R. de Putter | D. Thomas | G. Zhao | G. F. Porto de Mello | A. F. Neto | C. Yéche | D. W. Harris | Brice Ménard | M. Vargas Magaña | Yan-Mei Chen | Emma Fernández Alvar | I. Pérez-Ràfols | P. Brown | J. Goff | Luiz N. da Costa | Angelo Fausti Neto | Duy Cuong Nguyen | Leticia D. Ferreira | S. Anderson | M. Swanson | B. Weiner | D. Schneider | D. Schneider | I. Pérez-Ràfols | Y. S. Lee | J. Hamilton | David W. Harris

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