VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

Catalog

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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

  
J/A+A/370/900
  BeppoSAX HELLAS survey. IV (Vignali+, 2001)
ReadMe+ftp
2001A&A...370..900V
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/370/900/table1HELAS sources detected by ROSAT (68 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)
  HELLAS (char) Source identification (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  Class (char) Classification (Note 1)   (src.class)
  CR 10-2ct/s Count Rate (phot.count;em.X-ray)
  e_CR 10-2ct/s rms uncertainty on CD (stat.error)
  F0-5-2keV 10-16W/m2Flux at 0.5-2keV (phot.flux;em.X-ray)
  HR1  (n) Hardness ratio 1 (Note 2)   (phot.flux;arith.ratio)
  e_HR1  (n) rms uncertainty on HR1 (stat.error)
  n_HR1 (char) [+] +: HRI data (meta.note)
  HR2  (n) Hardness ratio 2 (Note 2)   (phot.flux;arith.ratio)
  e_HR2  (n) rms uncertainty on HR2 (stat.error)
  n_HR2 (char) [+] +: HRI data (meta.note)
  ROR (char) ROR number (meta.id;obs)
  Off-axis arcmin (n) Off-axis angle (instr.offset)
  n_Off-axis (char) [++ ] ++: RASS (meta.note)
  Texp ks Exposure time (time.duration;obs.exposure)
  NHgal 10+20cm-2(n) Galactic hydrogen column density from Dickey & Lockman (1990ARA&A..28..215D) (phys.columnDensity)

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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