1. Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
- Author
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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, and Fernández-Alvar, E
- Subjects
cosmology: observations ,galaxies: general ,Galaxy: general ,instrumentation: spectrographs ,stars: general ,surveys ,astro-ph.GA ,Astronomy & Astrophysics ,Astronomical and Space Sciences - 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.
- Published
- 2017