WARPS2 ivo://nasa.heasarc/warps2 NASA/GSFC HEASARC Horner et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the galaxy cluster catalog from the second, larger phase of the Wide Angle ROSAT Pointed Survey (WARPS), an X-ray selected survey for high-redshift galaxy clusters. WARPS is among the largest deep X-ray cluster surveys and is being used to study the properties and evolution of galaxy clusters. The WARPS-II sample contains 125 clusters serendipitously detected in a survey of 301 ROSAT PSPC pointed observations and covers a sky area of 56.7 deg<sup>2</sup>. Of these 125 clusters, 53 have not been previously reported in the literature. The authors have nearly complete spectroscopic follow-up of the clusters, which range in redshift from z = 0.029 to z = 0.92 with a median redshift of z = 0.29 and they find 59 clusters with z >= 0.3 (29 not previously reported in the literature) and 11 clusters with z >= 0.6 (6 not previously reported). They also define a statistically complete subsample of 102 clusters above a uniform flux limit of 6.5 x 10<sup>-14</sup> ergs/cm<sup>2</sup>/s (0.5 - 2.0 keV). In their paper, the authors also compare their redshifts, fluxes, and detection methods to other similar published cluster surveys and state that they find no serious issues with their measurements or completeness. The list of ROSAT pointings used in WARPS-II is given in Table 1 of the first reference paper. The WARPS-I cluster catalog (the second reference listed below) is also available in Browse as the WARPS table. This table was created by the HEASARC in September 2010 based on the combination of the electronic versions of Tables 2, 3, and 4 from the first reference paper which were obtained from the CDS (their catalog J/ApJS/176/374). This is a service provided by NASA HEASARC . 2008ApJS..176..374H https://heasarc.gsfc.nasa.gov/W3Browse/all/warps2.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=warps2& GET text/xml 180 99999 true 13.5152 -28.4062 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=warps2 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_warps2&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.0833333333333333 X-ray public warps2 Wide Angle ROSAT Pointed Survey, Second Phase (WARPS-II) Cluster name Assigned Cluster Designation (WARPS JHHMM.m+DDMMW) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable nh_galactic Hydrogen Column Density from Dickey & Lockman, 1990ARA&A..28..215D cm^-2 phys.columnDensity double nullable flux Unabsorbed Source Flux in the 0.5-2.0keV Band erg/s/cm^2 phot.flux;em.X-ray.soft double nullable log_lx Luminosity Calculated Using H_0_=70, Omega_M_=0.3, Omega_Lambda_=0.7 Cosmology log(erg/s) phys.luminosity;em.X-ray.soft double nullable redshift Redshift of the Cluster src.redshift double nullable core_radius Estimated Core Radius of the Cluster arcsec phys.angSize;src double nullable alt_names Known Aliases As Usually Listed in NED meta.id.assoc char nullable source_sample Field Indicates Published Table/Sample from Which the Entry Originates meta.ref;meta.table char nullable bii Galactic Latitude degree pos.galactic.lat double nullable log_lx_50 Logarithm of the Rest-Frame Source Luminosity in the 0.5-2.0keV Band log(erg/s) phys.luminosity;em.X-ray.soft double nullable redshift_flag Flag [? or .5] Indicates Uncertain Number of Valid Redshifts meta.code;src.redshift char nullable lii Galactic Longitude degree pos.galactic.lon double nullable notes Comments (See Section 3.2 of Published Paper for More Details) meta.note char nullable num_redshifts Number of Galaxy Redshifts Used to Derive the Cluster Redshift meta.number;src.redshift short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable