학술논문
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
Document Type
article
Author
Blanton, MR; Bershady, MA; Abolfathi, B; Albareti, FD; Prieto, CA; Almeida, A; Alonso-García, J; Anders, F; Anderson, SF; Andrews, B; Aquino-Ortíz, E; Aragón-Salamanca, A; Argudo-Fernández, M; Armengaud, E; Aubourg, E; Avila-Reese, V; Badenes, C; Bailey, S; Barger, KA; Barrera-Ballesteros, J; Bartosz, C; Bates, D; Baumgarten, F; Bautista, J; Beaton, R; Beers, TC; Belfiore, F; Bender, CF; Berlind, AA; Bernardi, M; Beutler, F; Bird, JC; Bizyaev, D; Blanc, GA; Blomqvist, M; Bolton, AS; Boquien, M; Borissova, J; Bosch, RVD; Bovy, J; Brandt, WN; Brinkmann, J; Brownstein, JR; Bundy, K; Burgasser, AJ; Burtin, E; Busca, NG; Cappellari, M; Carigi, MLD; Carlberg, JK; Rosell, AC; Carrera, R; Chanover, NJ; Cherinka, B; Cheung, E; Chew, YGM; Chiappini, C; Choi, PD; Chojnowski, D; Chuang, CH; Chung, H; Cirolini, RF; Clerc, N; Cohen, RE; Comparat, J; Costa, LD; Cousinou, MC; Covey, K; Crane, JD; Croft, RAC; Cruz-Gonzalez, I; Cuadra, DG; Cunha, K; Damke, GJ; Darling, J; Davies, R; Dawson, K; Macorra, ADL; Dell'Agli, F; Lee, ND; Delubac, T; Mille, FD; Diamond-Stanic, A; Cano-Díaz, M; Donor, J; Downes, JJ; Drory, N; Bourboux, HDMD; Duckworth, CJ; Dwelly, T; Dyer, J; Ebelke, G; Eigenbrot, AD; Eisenstein, DJ; Emsellem, E; Eracleous, M; Escoffier, S; Evans, ML; Fan, X; Fernández-Alvar, E
Source
Astronomical Journal. 154(1)
Subject
Language
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 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 ∼ 0.03). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between 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 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.