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

  Chandra X-ray sources in NGC 3556 (Wang+, 2003)
Post annotation
1.J/ApJ/598/969/table2Chandra Source List (83 rows)

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.
  [WCI2003]  Sequential number of the source
  CXOU (char) CXOU Name (JHHMMSS.SS+DDMMSS.s, J2000)
  ePos arcsec Position uncertainty
  logP  False detection probability (Note 1)   
  CR ct/ks On-axis (exposure-corrected) source count rate in the 0.3-7keV band.
  e_CR ct/ks rms uncertainty on CR
  HR  (n) Hardness ratio, HR=(H-S)/(H+S) (Note 2)   
  e_HR  (n) rms uncertainty on HR
  HR1  (n) Hardness ratio 1, HR1=(S2-S1)/S (Note 2)   
  e_HR1  (n) rms uncertainty on HR1
  HR2  (n) Hardness ratio 2, HR2=(H2-H1)/H (Note 2)   
  e_HR2  (n) rms uncertainty on HR2
  Band (char) [BSH] Band in which a source is detected with the most accurate position (Note 2)   
  _RA deg (i) Position (derived from the CXOU name) (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Position (derived from the CXOU name) (declination part) (pos.eq.dec;meta.main)

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