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

Journal Article · Sat Dec 15 00:00:00 EST 2012 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/203/2/21· OSTI ID:22089759

Ahn, Christopher P.; Anderton, Timothy ^[1]; Alexandroff, Rachael; Blake, Cullen H. ^[2]; Allende Prieto, Carlos ^[3]; Anderson, Scott F.; Barnes, Rory; Bhardwaj, Vaishali; Bochanski, John J. ^[4]; Andrews, Brett H. ^[5]; Aubourg, Eric; Bautista, Julian ^[6]; Bailey, Stephen ^[7]; Balbinot, Eduardo ^[8]; Beers, Timothy C. ^[9]; Beifiori, Alessandra ^[10]; Berlind, Andreas A. ^[11]; Bizyaev, Dmitry ^[12]; Blanton, Michael R. ^[13]; Blomqvist, Michael ^[14] ; others, and

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1. Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States)
2. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
3. Instituto de Astrofisica de Canarias (IAC), C/Via Lactea, s/n, E-38200 La Laguna, Tenerife (Spain)
4. Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195 (United States)
5. Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States)
6. APC, University of Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cite, F-75205 Paris (France)
7. Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720 (United States)
8. Instituto de Fisica, UFRGS, Caixa Postal 15051, Porto Alegre, RS-91501-970 (Brazil)
9. National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States)
10. Max-Planck-Institut fuer Extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany)
11. Department of Physics and Astronomy, Vanderbilt University, VU Station 1807, Nashville, TN 37235 (United States)
12. Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States)
13. Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003 (United States)
14. Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States)

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 {approx} 0.52), 102,100 new quasar spectra (median z {approx} 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{sub 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 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.

• OSTI ID: 22089759
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 203, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
BARYON SPECTROSCOPY
BARYONS
CATALOGS
GALAXIES
GRAVITATION
HYDROGEN
IRON
OSCILLATIONS
QUASARS
RADIAL VELOCITY
STARS