VizieR

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VizieR

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

  
J/AJ/104/28
  JHKL photometry of BL Lac Objects (Bersanelli+ 1992)
ReadMe+ftp
1992AJ....104...28B
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/104/28/table1(c)Program Objects (42 rows)
2.J/AJ/104/28/table2JHKL Fluxes (135 rows)
3.J/AJ/104/28/table3Spectral indices (42 rows)
4.J/AJ/104/28/refsReferences (42 rows)

Simple ConstraintList Of Constraints
 
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.
   (1+2+3)Name (char) (i) BL Lac name
  (1)RAJ2000 "h:m:s" Right Ascension J2000 (hours) (Note 1)   
  (1)DEJ2000 "d:m:s" Declination J2000 (degrees) (Note 1)   
  (1)z  (n) Redshift
  (1)Av mag Absorption
  (1)X/R (char) X or Radio flag
  (1)Comments (char) Free-text comments
  (1)r_Comments (char) Comma-separated list of references
  (2)JD JD Julian Date of observation
  (2)Jmag mJy (n) Flux in filter

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)e_Jmag mJy (n) mean error on J
  (2)Hmag mJy (n) Flux in filter
  (2)e_Hmag mJy (n) mean error on H
  (2)Kmag mJy (n) Flux in filter
  (2)e_Kmag mJy (n) mean error on K
  (2)Lmag mJy (n) Flux in filter
  (2)e_Lmag mJy (n) mean error on L
  (3)Note (char) Notes (Note 1)   
  (3)Sp-Index  (n) spectral index (F proportional (nu)**(-a)
  (3)Nobs  Number of observations
  (3)amin  (n) Minimal value of spectral index
  (3)e_amin  (n) mean error on amin
  (3)amax  (n) Maximal value of spectral index

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)e_amax  (n) mean error on amax
  (3)pcGal % (n) Fractional estimated flux contribution of the host galaxy to the observed spectrum.
  (4)RefNum  Reference number
  (4)BibCode (char) The 19-digit bibcode, when existing
  (4)Text (char) Authors

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