SPIDERS: the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV
SPIDERS: the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV
SPIDERS (The SPectroscopic IDentification of eROSITA Sources) is a program dedicated to the homogeneous and complete spectroscopic follow-up of X-ray AGN and galaxy clusters over a large area ($\sim$7500 deg$^2$) of the extragalactic sky. SPIDERS is part of the SDSS-IV project, together with the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) …