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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

  
Target dimension:

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J/ApJ/559/864
 Extragalactic ultracompact H II regions (Johnson+, 2001)
Post annotation
img(gal)
1.J/ApJ/559/864/m33Ultra-dense HII candidates in M33 (adopted distance: 840kpc) (14 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. (meta.record)
  [JKM2001]  Source identification (M33 NN) (meta.id;meta.main)
  RAJ2000 "h:m:s" Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" Declination (J2000) (pos.eq.dec;meta.main)
  L6cm 10+16W/Hz6cm luminosity (phys.luminosity;em.radio)
  e_L6cm 10+16W/Hzrms uncertainty on L6cm (stat.error)
  L20cm 10+16W/Hz20cm luminosity (phys.luminosity;em.radio)
  e_L20cm 10+16W/Hzrms uncertainty on L20cm (stat.error)
  QLyc 10+49s-1 Production rate of Lyman continuum photon (phot.count;em.UV)
  e_QLyc 10+49s-1 rms uncertainty on QLyc (stat.error)
  SI  Spectral index 20cm to 6cm (spect.index;em.radio.750-1500MHz)
  e_SI  rms uncertainty on SI (stat.error)
  B (char) B-band counterpart ? (meta.note)
  HII (char) HII counterpart ? (Note 1)   (meta.note)
  [GDK99]  Gordon et al. (1999, Cat. J/ApJS/120/247 number (meta.id)

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