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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/ApJ/837/130
  Collinder 261 Chandra sources & optical counterparts (Vats+, 2017)
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img(gal)
1.J/ApJ/837/130/table1(c)Catalog of Chandra sources in Cr 261 (151 rows)
2.J/ApJ/837/130/table2Optical Counterpart Properties (135 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)Seq  (i) [1/151] Running sequence number (Note G1)   (meta.id;meta.main)
  (1)f_Seq (char) [d] Flag on Seq (Note 1)   (meta.code)
  (1)CXOU (char) Official IAU identifier (HHMMSS.s+DDMMSS; J2000) (meta.id)
  (1)RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  (1)ePos arcsec [0.3/8] The 95% confidence radius (Note 2)   (phys.angSize)
  (1)theta arcmin [0.2/11] Angular offset (Note 3)   (pos;arith.diff)
  (1)CT ct [3/473] The 0.3-7keV net counts extracted (phot.count;em.X-ray)
  (1)e_CT ct [2/22] The 1σ uncertainty in CT (stat.error)
  (1)l_CS (char) Limit flag on CS (meta.code.error)

ALL cols
    
 (i)indexed column
  (1)CS ct [0/226] The 0.3-2keV net counts extracted (phot.count;em.X-ray)
  (1)e_CS ct (n) [1/15] The 1σ uncertainty in CS (stat.error)
  (1)FXu 10-15mW/m2 [0.5/100] Unabsorbed 0.3-7keV X-ray flux (Note 4)   (phot.flux;em.X-ray)
  (1)E50 keV [0.7/6] Median energy (em.energy)
  (1)e_E50 keV [0.06/2] The 1σ uncertainty in E50 (stat.error)
  (1)Match (char) Optical counterpart match? (+ = present; - = absent; see table 2) (meta.code)
  (1)W16  (n)Display data from Wang+, 2016, J/ApJS/224/40, within 1" (meta.ref.url)
  (2)OID (char) Optical identifier (Note 1)   (meta.id.cross)
  (2)f_OID (char) [ac] Flag on OID (Note 2)   (meta.code)
  (2)Dox arcsec [0.05/8] Distance between X-ray and its optical counterpart (pos.angDistance)
  (2)Vmag mag [11.4/23.8] Johnson V band magnitude (phot.mag;em.opt.V)
  (2)f_Vmag (char) [bd] Flag on Vmag (Note 2)   (meta.code)
  (2)B-V mag (n) [0.5/2.1] The (B-V) color index (phot.color;em.opt.B;em.opt.V)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)f_B-V (char) [de] Flag on B-V (Note 2)   (meta.code)
  (2)Var (char) Mazur+ (1995MNRAS.273...59M) short-period binary identifier; <Cl* Collinder 261 MKK VNN> in Simbad (meta.id.cross)
  (2)Per d (n) [0.2/2.2] Period of short-period binary (time.period)
  (2)f_Per (char) [?] Uncertainty flag on Per (meta.code)
  (2)VType (char) Mazur+ (1995MNRAS.273...59M) variable type (src.class)
  (2)LXu 10+23W [0.5/25.5] Unabsorbed 0.3-7keV X-ray luminosity (Note 3)   (phys.luminosity;em.X-ray)
  (2)logR [-] [-4.8/0.3] Log ratio of X-ray to V band fluxes (Note 4)   (phot.flux;arith.ratio)
  (2)Class (char) Classification (Note 5)   (src.class)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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