Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
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DOI：
10.3847/1538-3881/aa7567
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发表时间：
2017-07-01
影响因子：
5.3
通讯作者：
Zou, Hu
中科院分区：
文献类型：
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作者：
Blanton, Michael R.;Bershady, Matthew A.;Zou, Hu
我们描述了斯隆数字巡天 IV (SDSS-IV)，该项目包含三个主要的光谱计划。阿帕奇点天文台银河演化实验 2 (APOGEE-2) 正在以高分辨率观测数十万颗银河系恒星。近红外区域具有高信噪比。阿帕奇点天文台 (MaNGA) 附近星系测绘 (MaNGA) 调查正在获取数千个附近星系的空间分辨光谱（中值 z 类似于 0.03）。扩展重子振荡光谱巡天 (eBOSS) 正在绘制类似于 0.6 和 3.5 之间 z 的星系、类星体和中性气体分布图，以使用重子声振荡、红移空间扭曲和功率谱形状来约束宇宙学。在 eBOSS 内，我们正在进行两个主要子项目：eROSITA 源的光谱识别 (SPIDERS)，研究 X 射线活动星系核。和 X 射线星团中的星系，以及时域光谱巡天 (TDSS)，获得可变源的光谱。所有项目均使用 2.5 m 斯隆基金会望远镜。阿帕奇角天文台；观测工作于 2014 年夏季开始。APOGEE-2 还在拉斯坎帕纳斯天文台的 2.5 m 杜邦望远镜上运行第二台近红外光谱仪，观测工作于 2017 年初开始。这两个设施的观测计划将持续到 2020 年。根据之前的 SDSS 政策，SDSS-IV 定期发布公共数据；第一个数据版本 13 于 2016 年 7 月发布。
We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and. high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median z similar to 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between z similar to 0.6 and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs. and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the. Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July.