VizieR Online Data Catalog: SPIDERS BCGs gri photometry (Furnell+, 2018)

This work makes use of observations primarily from two separate sources: X-ray observations from the ROSAT All-Sky Survey (RASS), a shallow, low signal-to-noise ratio, all-sky survey of soft X-ray sources running between 1990 and 1999 (Voges et al. 1999A&A...349..389V, Cat. IX/10) and optical data from the Sloan Digital Sky Survey (SDSS; York et al., 2000AJ....120.1579Y). The spectroscopic data for this work originate from the SDSS-IV (Blanton et al., 2017AJ....154...28B) SPectroscopic IDentification of eRosita Sources (SPIDERS) survey, which aims to investigate ~10⁴ X-ray targets detectable by eROSITA prior to launch in 2018.

(1 data file).