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

  Low-frequency flat spectrum sources (LORCAT) (Massaro+, 2014)
Post annotation
1.J/ApJS/213/3/table1Low-frequency radio catalog of flat-spectrum sources (LORCAT) catalog (28358 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)
  WSRT (char) WSRT identifier (HHMM.m+DDMM; B1950) (
  NVSS (char) NVSS identifier (JHHMMSS+DDMMSS) (;meta.main)
  RAJ2000 "h:m:s" (i) NVSS Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) NVSS Degree of Declination (J2000) (pos.eq.dec;meta.main)
  Sep arcsec [0/92.3] Angular separation between WSRT & NVSS position (pos.angDistance)
  alpha   [-1/0.4] Low frequency radio spectral index (αlow) (spect.index;
  e_alpha  Uncertainty in alpha (stat.error;pos.eq.ra)
  Cat (char) WSRT original survey identifier (Note 1)   (;meta.dataset)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)

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