Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 203, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0067-0049/203/2/21
Keywords
atlases; catalogs; surveys
Categories
Funding
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy Office of Science
- ICREA Funding Source: Custom
- STFC [ST/H002774/1, ST/I505905/1, ST/J001538/1, ST/I001204/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H002774/1, ST/H00243X/1, ST/I505905/1, ST/J001538/1, ST/I001204/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1211673, 1009886, 1109665, 849736, 1202963] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1316783] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0901965, 1212000] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [23540289] Funding Source: KAKEN
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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 similar to 0.52), 102,100 new quasar spectra (median z similar to 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 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.
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