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J/ApJS/241/33
  Long-term variability in the radio-quiet AGN Ark120 (Li+, 2019)
timeSerie
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1.J/ApJS/241/33/table1Data sets for the light curves of Ark 120 (17 rows)
2.J/ApJS/241/33/table3Compiled optical light curve of Ark 120 [timeSerie] (Interactive plot)
timeSerie
(1492 rows)
3.J/ApJS/241/33/table4The centroid wavelength and dispersion data of the broad Hβ line (76 rows)

 
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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)
  (1)n_Set (char) p: photometric data at the V-band, except for M79 at M-band; or s: spectroscopy (meta.note)
   (1+2)Set (char) (i) Dataset ID (meta.id;meta.dataset;meta.main)
  (1)f_Set (char) Flag on Set (Note 1)   (meta.code)
  (1)Ref   [1/15] Reference (Note 2)   (meta.ref;pos.frame)
  (1)JDl d Julian Date of observation, start (time.epoch)
  (1)JDu d Julian Date of observation, end (time.epoch)
  (1)Datel yr Year of observation, start (time.epoch)
  (1)Dateu yr Year of observation, end (time.epoch)
  (1)Nobs   [20/476] Number of observations (meta.number)
  (1)Ap (char) arcsec Aperture (phys.angSize;instr.fov)

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 (i)indexed column
  (1)FOIII 10-16W/m2(n) [0.7/1.4] Flux of [OIII]λ5007 used for absolute calibration of spectra in the data set; in 10–13erg/s/cm2 (phot.flux)
  (1)phi  (n) [0.3/1.2] Scale factor φ (Note 3)   (arith.factor)
  (1)e_phi  (n) [0.003/0.3] φ uncertainty (stat.error)
  (1)G 10-17W/m2/nm(n) [-8.1/6.6] Flux adjustment (G); in 10–15erg/s/cm^2/Å units (Note 3)   (arith.factor)
  (1)e_G 10-17W/m2/nm(n) [0.03/1.1] G uncertainty (stat.error)
  (1)Nlc  (n)Number of optical LC measurements for this DataSet (link to Table 3) (meta.number)
  (2+3)JD d [42392/58451.1] Julian Date; JD-2400000 (time.epoch)
  (2)F5100 10-17W/m2/nm [3.9/19.8] Flux density at 5100Å; in 10–15erg/s/cm^2/Å units (phot.flux)
  (2)e_F5100 10-17W/m2/nm [0.07/3.1] Uncertainty in F5100 (stat.error)
  (3)lamHb 0.1nm [4860.17/4881.89] Centroid wavelength, broad Hβ line; in Angstrom units (em.wl;spect.line)
  (3)sigHb 0.1nm [24.97/46.95] Dispersion, broad Hβ line; in Angstrom units (spect.line.width)

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