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 2MASS observation of BL Lac objects (Chen+, 2005)
Post annotation
1.J/other/NewA/11.27/table12MASS observations of BL Lac objects (511 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)
  Seq  Sequential number (meta.record)
  Name (char) BL Lac object Name (;meta.main)
  USNO (char) USNO-A2 or USNO-B1 number (
  n_USNO (char) [AB] USNO-A2 (A) or USNO-B1 (B) (meta.note)
  RAJ2000 "h:m:s" 2MASS Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" 2MASS Declination (J2000) (pos.eq.dec;meta.main)
  r1 arcsec Distance between BL Lac object and related USNO source (pos.angDistance)
  r2 arcsec Distance between USNO source and related 2MASS source (pos.angDistance)
  Vmag mag (n) V magnitude (phot.mag;em.opt.V)
  Jmag mag 2MASS J magnitude (phot.mag;em.IR.J)

ALL cols
(n) indicates a possible blank or NULL column  
  n_Jmag (char) [*] * indicates an upper limit for Jmag (meta.note)
  e_Jmag mag (n) rms uncertainty on Jmag (stat.error;phot.mag;em.IR.J)
  Hmag mag 2MASS H magnitude (phot.mag;em.IR.H)
  n_Hmag (char) [*] * indicates an upper limit for Hmag (meta.note)
  e_Hmag mag (n) rms uncertainty on Hmag (stat.error;phot.mag;em.IR.H)
  Kmag mag 2MASS K magnitude (phot.mag;em.IR.K)
  n_Kmag (char) [*] * indicates an upper limit for Kmag (meta.note)
  e_Kmag mag (n) rms uncertainty on Kmag (stat.error;phot.mag;em.IR.K)
  alpha(J-K)  (n) Power spectral index between J and K bands (spect.index)
  z  (n) Redshift (src.redshift)
  Type (char) Type of object (Note 1)   (src.class)
  rad (char) [*st ] Radio note (Note 2)   (meta.note)
  u_Av (char) [)] Uncertainty flag on Av (meta.code.error)
  Av mag (n) Interstellar extinction coefficient Av (phys.absorption.coeff)
  Host (char) [#] #: possible influence from the host galaxy (meta.note)
  Links  Extract data from nearby sources in V'eron (VII/248), 2MASS (II/246), USNO (I/252, I/284), NOMAD (I/297) (meta.ref.url)

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