Sloan Digital Sky Survey IV : mapping the Milky Way, nearby galaxies and the distant universe
Abstract
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 ratio 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 redshift of z = 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between redshifts z = 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 AGN and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5-meter Sloan Foundation Telescope at Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5-meter 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 SDSSpolicy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in July 2016.
Citation
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M , Vazquez , J A , Villanova , S , Vivek , M , Vogt , N , Wake , D , Walterbos , R , Wang , Y , Weaver , B A , Weijmans , A-M , Weinberg , D H , Westfall , K B , Whelan , D G , Wild , V , Wilson , J , Wood-Vasey , W M , Wylezalek , D , Xiao , T , Yan , R , Yang , M , Ybarra , J E , Yèche , C , Zakamska , N , Zamora , O , Zarrouk , P , Zasowski , G , Zhang , K , Zhao , G-B , Zheng , Z , Zheng , Z , Zhou , X , Zhou , Z-M , Zhu , G B , Zoccali , M & Zou , H 2017 , ' Sloan Digital Sky Survey IV : mapping the Milky Way, nearby galaxies and the distant universe ' Astronomical Journal , vol. 154 , no. 1 , 28 . https://doi.org/10.3847/1538-3881/aa7567 , https://doi.org/10.3847/1538-3881/aa7567
Publication
Astronomical Journal
Status
Peer reviewed
ISSN
0004-6256Type
Journal article
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