Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
- Author(s): 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
- et al.
Published Web Location
https://doi.org/10.3847/1538-3881/aa7567Abstract
© 2017. The American Astronomical Society. All rights reserved. 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.