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VizieR

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J/MNRAS/439/611/catalog X-ray luminosities of SDSS DR7 clusters from RASS (Wang+, 2014)
SDSS-RASS catalog (64646 rows)
  recno=389
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ColumnValue  Explain   (UCD)
_RAJ200012 25 25.1232 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+16 07 27.048 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195012 22 53.4082 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+16 24 03.400 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon272.8738600 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+77.4507470 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
389recno 389  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group 4429  Optical Group ID (meta.id.parent)
Galaxy444428  Central galaxy ID of this group (meta.id;meta.main)
NYUVAGC1834867  Central galaxy ID in NYUVAGC catalog (Note 1)   (meta.id)
flagb1 0   [0/11] multi-z flag b1 (Note 2)   (meta.code.error)
flagb20   [0/4] multi-z flag b2 (Note 3)   (meta.code.error)
flagb30   [0/1] multi-z flag b3 (Note 4)   (meta.code.error)
MSID1   [1/4] Mass sequence ID for central, the k-th most massive galaxy in a group, k≤4 (meta.id;phys.mass;obs.sequence)
O-X 0.000000 arcmin Offset between the optical galaxy and X-ray cluster center (pos.angDistance)
RAJ2000186.35468 deg (i) Right ascension of the X-ray cluster (J2000) (pos.eq.ra;meta.main)
DEJ2000+16.12418 deg (i) Declination of the X-ray cluster (J2000) (pos.eq.dec;meta.main)
CRate-0.005888920 ct/s X-ray photons count rate (in 0.1-2.4keV) in detection radius 0.5*r200 (phot.count;em.X-ray)
e_CRate 0.025485899 ct/s Error for the count rate (stat.error)
RX11.5 arcmin Radius of the extended X-ray source, here Rx = 0.5*r200 (phys.angSize;src)
Flux -0.07731055 10-15W/m2 X-ray flux (phot.flux;em.X-ray)
LX-0.00168579 10+37W X-ray luminosity of a cluster in 0.1-2.4keV (phys.luminosity;em.X-ray)
LB-0.00277875 10+37W Bolometric luminosity (derived from LX) (phys.luminosity;em.opt.B)
ExtCorr 1.00000000  beta model correction factor for the 'missing' fraction of the total projected source emission (ext_corr) (arith.factor)
sigma 193.92341614 km/s Velocity dispersion derived from the optical halo mass (Note 5)   (phys.veloc.dispersion)
Ngal 7  Number of galaxies in the group (meta.number)
T 0.23 keV Gas temperature of the group derived from the velocity dispersion sigma (Note 6)   (phys.temperature)
logNH 2.04e+20 [cm-2] Galactic hydrogen column density (phys.columnDensity;pos.galactic)
Aexpo 427.7 s Average exposure time on the detection (time.duration;obs.exposure;stat.mean)
z 0.0307859  Optical spectroscopic redshift of the central galaxy (src.redshift)
Apr500 6.55133 arcmin Aperture of r500 (phys.angSize;instr.fov)
S/N 0.00000  Signal to noise ratio of the X-ray detection (stat.snr)
fmulti 1.00000  Flux fraction of a X-ray source in a multi-cluster detection, see Eq.5 in this paper (phot.flux;em.X-ray)

SloanSloan  Display the SDSS data for this cluster (meta.ref.url)
  
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