Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe

Abstract

We describe the Sloan

Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations

“…The details of the APOGEE instrument, survey, data, and calibration are outlined in Majewski et al (2017) and references therein. Here we present an analysis of the APOGEE data presented in the SDSS Data Release 13 (DR13; Albareti et al 2017), the first data release of SDSS-IV (Blanton et al 2017). In this data release, a reanalysis of the spectra presented in SDSS DR12 was performed to improve the quality of derived parameters.…”

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

“…The sample of galaxies used in this work is mainly composed of LRGs observed spectroscopically during the first two years of eBOSS , the cosmological component of the fourth generation of the SDSS-IV (Blanton & Bershady 2017). In order to increase tracer density, we combine the eBOSS sample with the z>0.6 BOSS CMASS galaxies (Alam et al 2017) trimmed to the area covered by eBOSS observations.…”

“…At higher redshifts, the Dark Energy Spectroscopic Instrument (DESI; DESI Collaboration 2016a, 2016b), the 4MOST Cosmology Redshift Survey (de Jong et al 2016), and the European Space Agency Euclid mission (Laureijs et al 2011) will observe an order of magnitude more galaxies. The extended BOSS (eBOSS; Dawson et al 2016), part of the SDSS-IV experiment (Blanton & Bershady 2017), is the largest spectroscopic galaxy survey running at this time. eBOSS extends the redshift range beyond the BOSS galaxy sample, to redshifts that will be covered by future surveys.…”

SDSS-IV MaNGA: the different quenching histories of fast and slow rotators

“…MaNGA is a multi-object IFU survey conducted with the 2.5 m Sloan Foundation Telescope (Gunn et al 2006) at Apache Point Observatory (APO) as part of SDSS-IV (Blanton et al 2017). By 2020 MaNGA will have acquired IFU spectroscopy for ∼ 10000 galaxies with M * > 10 9 M and an approximately flat mass selection (Wake et al 2017).…”