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arXiv · 1207.7137

The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey

III Collaboration·Christopher P. Ahn·Rachael Alexandroff·Carlos Allende Prieto·Scott F. Anderson·Timothy Anderton·Brett H. Andrews·Éric Aubourg Stephen Bailey·Rory Barnes·Julian Bautista·Timothy C. Beers·Alessandra Beifiori·Andreas A. Berlind·Vaishali Bhardwaj·Dmitry Bizyaev·Cullen H. Blake·Michael R. Blanton·Michael Blomqvist·John J. Bochanski·Adam S. Bolton·Arnaud Borde·Jo Bovy·W. N. Brandt·J. Brinkmann·Peter J. Brown·Joel R. Brownstein·Kevin Bundy·N. G. Busca·William Carithers·Aurelio R. Carnero·Michael A. Carr·Dana I. Casetti-Dinescu·Yanmei Chen·Cristina Chiappini·Johan Comparat·Natalia Connolly·Justin R. Crepp·Stefano Cristiani·Rupert A. C. Croft·Antonio J. Cuesta·Luiz N. da Costa·James R. A. Davenport·Kyle S. Dawson·Roland de Putter·Nathan De Lee·Timothée Delubac·Saurav Dhital·Anne Ealet·Garrett L. Ebelke·Edward M. Edmondson·Daniel J. Eisenstein·S. Escoffier·Massimiliano Esposito·Michael L. Evans·Xiaohui Fan·Bruno Femení a Castellá·Emma Fernández Alvar·Leticia D. Ferreira·N. Filiz Ak·Hayley Finley·Scott W. Fleming·Andreu Font-Ribera·Peter M. Frinchaboy·D. A. García-Hernández·A. E. García Pérez·Jian Ge·R. Génova-Santos·Bruce A. Gillespie·Léo Girardi·Jonay I. González Hernández·Eva K. Grebel·James E. Gunn·Daryl Haggard·Jean-Christophe Hamilton·David W. Harris·Suzanne L. Hawley·Frederick R. Hearty·Shirley Ho·David W. Hogg·Jon A. Holtzman·Klaus Honscheid·J. Huehnerhoff·Inese I. Ivans·Zeljko Ivezić·Heather R. Jacobson·Linhua Jiang·Jonas Johansson·Jennifer A. Johnson·Guinevere Kauffmann·David Kirkby·Jessica A. Kirkpatrick·Mark A. Klaene·Gillian R. Knapp·Jean-Paul Kneib·Jean-Marc Le Goff·Alexie Leauthaud·Khee-Gan Lee·Young Sun Lee·Daniel C. Long·Craig P. Loomis
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Abstract

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<5000 K and in metallicity estimates for stars with [Fe/H]>-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 SDSS-III Sloan Extension for Galactic Understanding and Exploration-2 (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 Apache Point Observatory Galactic Evolution Experiment (APOGEE) along with another year of data from BOSS, followed by the final SDSS-III data release in December 2014.

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III Collaboration, Christopher P. Ahn, Rachael Alexandroff, Carlos Allende Prieto, Scott F. Anderson, Timothy Anderton, Brett H. Andrews, Éric Aubourg Stephen Bailey, Rory Barnes, Julian Bautista, Timothy C. Beers, Alessandra Beifiori, Andreas A. Berlind, Vaishali Bhardwaj, Dmitry Bizyaev, Cullen H. Blake, Michael R. Blanton, Michael Blomqvist, John J. Bochanski, Adam S. Bolton, Arnaud Borde, Jo Bovy, W. N. Brandt, J. Brinkmann, Peter J. Brown, Joel R. Brownstein, Kevin Bundy, N. G. Busca, William Carithers, Aurelio R. Carnero, Michael A. Carr, Dana I. Casetti-Dinescu, Yanmei Chen, Cristina Chiappini, Johan Comparat, Natalia Connolly, Justin R. Crepp, Stefano Cristiani, Rupert A. C. Croft, Antonio J. Cuesta, Luiz N. da Costa, James R. A. Davenport, Kyle S. Dawson, Roland de Putter, Nathan De Lee, Timothée Delubac, Saurav Dhital, Anne Ealet, Garrett L. Ebelke, Edward M. Edmondson, Daniel J. Eisenstein, S. Escoffier, Massimiliano Esposito, Michael L. Evans, Xiaohui Fan, Bruno Femení a Castellá, Emma Fernández Alvar, Leticia D. Ferreira, N. Filiz Ak, Hayley Finley, Scott W. Fleming, Andreu Font-Ribera, Peter M. Frinchaboy, D. A. García-Hernández, A. E. García Pérez, Jian Ge, R. Génova-Santos, Bruce A. Gillespie, Léo Girardi, Jonay I. González Hernández, Eva K. Grebel, James E. Gunn, Daryl Haggard, Jean-Christophe Hamilton, David W. Harris, Suzanne L. Hawley, Frederick R. Hearty, Shirley Ho, David W. Hogg, Jon A. Holtzman, Klaus Honscheid, J. Huehnerhoff, Inese I. Ivans, Zeljko Ivezić, Heather R. Jacobson, Linhua Jiang, Jonas Johansson, Jennifer A. Johnson, Guinevere Kauffmann, David Kirkby, Jessica A. Kirkpatrick, Mark A. Klaene, Gillian R. Knapp, Jean-Paul Kneib, Jean-Marc Le Goff, Alexie Leauthaud, Khee-Gan Lee, Young Sun Lee, Daniel C. Long, Craig P. Loomis. 2012-07-30. The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey. https://doi.org/10.1088/0067-0049%2F203%2F2%2F21

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