THE NINTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY: FIRST SPECTROSCOPIC DATA FROM THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY
THE NINTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY: FIRST SPECTROSCOPIC DATA FROM THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY
复制标题
斯隆数字巡天第九次数据发布：来自 SDSS-III 重子振荡光谱巡天的首个光谱数据
DOI：
10.1088/0067-0049/203/2/21
复制
发表时间：
2012-12-01
影响因子：
8.7
通讯作者：
Zinn, Joel C.
中科院分区：
文献类型：
--
作者：
Ahn, Christopher P.;Alexandroff, Rachael;Zinn, Joel C.
斯隆数字巡天III(SDSS-III)展示了重子振荡光谱巡天(BOSS)的第一批光谱数据。SDSS项目的第九次数据发布(DR9)包括535,995个新的星系光谱(中位数z类似于0.52)，102,100个新的类星体光谱(中位数z类似于2.32)，以及90,897个新的恒星光谱，以及之前发布的数据。这些光谱是用新的BOSS光谱仪获得的，拍摄于2009年12月至2011年7月之间。此外，确定恒星的径向速度、表面温度、表面重力和金属丰度的恒星参数管道也得到了更新和改进，改进了对温度为5000K的恒星的温度估计和对[Fe/H]>；-0.5的恒星的金属丰度估计。DR9包括了DR8中显示的所有恒星的新恒星参数，包括SDSS-I和SDSS-II的恒星，以及作为SEGUE-2一部分观测到的恒星。在DR8成像星表中引入的天体测量误差已在DR9数据产品中得到修正。SDSS-III的下一次数据发布将于2013年夏季发布，届时将提供来自远地点的第一批数据以及BOSS的另一年数据，随后将于2014年12月发布SDSS-III的最终数据。
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.