期刊
ASTRONOMICAL JOURNAL
卷 154, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-3881/aa7567
关键词
cosmology: observations; galaxies: general; Galaxy: general; instrumentation: spectrographs; stars: general; surveys
资金
- Australian Research Council Future Fellowship [FT150100333]
- STFC [ST/M001172/1, ST/N000919/1, ST/P00556X/1, ST/F007159/1, ST/P000649/1, ST/P000614/1, ST/K00106X/1, ST/K004719/1, ST/L000695/1, ST/N000668/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F007159/1, ST/P00556X/1, ST/N000668/1, ST/P000649/1, ST/M000966/1, ST/N000919/1, ST/K00106X/1, ST/P000614/1] Funding Source: researchfish
- UK Space Agency [ST/N00180X/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1516997, 1516784] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1430152] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1413269] Funding Source: National Science Foundation
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.
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