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Catalog

Looking for catalogs ..
Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
IX/15
  Einstein EMSS Survey (Gioia+ 1990, Stocke+ 1991)
ReadMe+ftp
1990ApJS...72..567G
Similar Catalogs
Post annotation 		img(gal)
1.IX/15/catalogEMSS Catalogue (835 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  name (char) Name of EMSS source (Note)   (meta.id;meta.main)
  RAB1950 "h:m:s" (i) Right Ascension (B1950.0) hours (Note)   (pos.eq.ra;meta.main)
  DEB1950 "d:m:s" (i) Declination sign (B1950.0) (Note)   (pos.eq.dec;meta.main)
  e_pos arcsec Positional Uncertainty (Note)   (stat.error)
  x arcsec (n) Position offset between optical and X-ray (Note)   (pos;arith.diff)
  y arcsec (n) Position offset between optical and X-ray (Note)   (pos;arith.diff)
  fX 10-16W/m2X-ray flux (*1.E-13 ergs/cm**2/s or *1.E-16 W/m**2) in the 0.3-3.5 keV band (Note)   (phot.flux;em.X-ray)
  ext_flag (char) Flagged '*' if source is extended (Note)   (meta.note)
  e_fX 10-16W/m21 sigma error on X-ray flux (Note)   (stat.error)
  ctrate ct/ks Corrected IPC count rate (Note)   (phot.count;em.X-ray)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  sn  Signal to Noise Ratio (Note)   (stat.snr)
  cts  Uncorrected net counts in 0.2-3.5 keV (Note)   (phot.count;em.X-ray)
  e_cts  Error on net counts (Note)   (stat.error)
  live s Corrected exposure time (Note)   (time.duration;obs.exposure)
  bkgcts  Total background counts (Note)   (instr.background)
  seqno  IPC sequence number of the image used (Note)   (meta.id)
  cts_ext  (n) Net extended counts (Note)   (phot.count;em.X-ray)
  nH 10+25m-2 Hydrogen column density (*E+25 m^-2 or *E+21 cm^-2) (Note)   (phys.columnDensity)
  Vmag mag (n) Visual magnitude (Note)   (phot.mag;em.opt.V)
  n_fR (char) '<' for upper limit in fR (meta.note)
  fR mJy (n) Radio flux at 5 GHZ (Note)   (phot.flux.density;em.radio.3-6GHz)
  fX/fv  (n) Logarithm of X-ray to visual flux ratio (Note)   (phot.flux;arith.ratio)
  class (char) Proposed identification class of the X-ray source (see below) (Note)   (src.class)
  r_class (char) Reference for class (Note)   (meta.ref)
  z  (n) Redshift (Note)   (src.redshift)
  n (char) 'n' if a note on the source is in file notes (meta.note)
  comment (char) Miscellaneous information on the source (Note)   (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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