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3C120
Alternate Names:
  ACS, HRC, F550M
RA = 04:33:11.1   Dec = +05:21:16   z = 0.03301
DL =  140.9 Mpc     DA =  132.1 Mpc
for  H0 = 72 km s-1 Mpc-1  ΩΛ = 0.7   ΩM = 0.3
< f > :
5.5
Onken+04
5.1
Park+12
4.8
Batiste+17
4.3
Grier+13
2.8
Graham+11
 Other 

MBH calculated using < f > =  4.3
MBH (Hβ only):
MBH (all lines): 		5.130 (+ 0.566/- 0.543)   (107 Msun)
5.555 (+ 0.514/- 0.488)   (107 Msun)
MBH (RM modeling):
 6.920 (+ 2.630/- 2.450)   (107 Msun)
Grier et al. 2017 ApJ, 849, 146


Reverberation Measurements
Line JD Range
(days)		 τJAV
(days)		 τJAV Ref. τcent
(days)		 τpeak
(days)		 σline
(km s-1)		 FWHM
(km s-1)		 RM Ref(s) log LAGN,5100
(ergs s-1)		 L Ref.
Hγ
λ4340
54726 - 54920
...
23.9
(+ 4.6/- 3.9)
...
1939
(+/- 78)
4696
(+/- 979)
Kollatschny et al. 2014 A&A, 566, 106
...
He II
λ4686
54726 - 54920
...
12.0
(+ 7.5/- 7.0)
...
3253
(+/- 130)
6472
(+/- 132)
Kollatschny et al. 2014 A&A, 566, 106
...
Hβ
λ4861
47837 - 50388
...
38.1
(+21.3/-15.3)
32.0
(+10.0/- 9.0)
1166
(+/- 50)
2205
(+/- 185)
Peterson et al. 1998 ApJ, 501, 82

Peterson et al. 2004 ApJ, 613, 682
44.01
(+/- 0.05)
Bentz et al. 2013 ApJ, 767, 149
Hβ
λ4861
54726 - 54920
...
27.9
(+ 7.1/- 5.9)
...
1689
(+/- 68)
3252
(+/- 67)
Kollatschny et al. 2014 A&A, 566, 106
...
Hβ
λ4861
55430 - 55569
27.2
(+ 1.1/- 1.1)
Grier et al. 2012 ApJ, 755, 60
25.9
(+ 2.3/- 2.3)
25.6
(+ 2.4/- 2.4)
1514
(+/- 65)
2539
(+/- 466)
Grier et al. 2012 ApJ, 755, 60
43.87
(+/- 0.05)
Bentz et al. 2013 ApJ, 767, 149
He I
λ5876
54726 - 54920
...
26.8
(+ 6.7/- 7.3)
...
2358
(+/- 570)
3987
(+/- 128)
Kollatschny et al. 2014 A&A, 566, 106
...
Hα
λ6563
54726 - 54920
...
28.5
(+ 9.0/- 8.5)
...
1638
(+/- 105)
2630
(+/- 87)
Kollatschny et al. 2014 A&A, 566, 106
...
Note: Measurements are provided in the rest frame of the host galaxy. Line widths are measured in the variable (RMS) portion of the spectrum.

Researchers are advised to examine the details and make their own determination of the reliability of any datasets included here.