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PG1229+204
Alternate Names:
Mrk771
  ACS, HRC, F550M
RA = 12:32:03.6   Dec = +20:09:29   z = 0.06301
DL =  274.9 Mpc     DA =  243.3 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):
6.083 (+ 4.547/- 2.648)   (107 Msun)
5.734 (+ 2.848/- 2.270)   (107 Msun)



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.

λ4340
48986 - 50997
...
10.9
(+19.9/-23.9)
7.0
(+26.0/-16.0)
1540
(+/- 159)
3207
(+/- 875)
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
...

λ4861
48319 - 50997
42.8
(+ 2.3/- 1.1)
Zu et al. 2011 ApJ, 735, 80
37.8
(+27.6/-15.3)
32.0
(+10.0/-19.0)
1385
(+/- 111)
3415
(+/- 320)
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
43.64
(+/- 0.06)
Bentz et al. 2013 ApJ, 767, 149

λ6563
48319 - 50997
45.7
(+ 2.8/- 1.1)
Zu et al. 2011 ApJ, 735, 80
89.0
(+34.1/-43.4)
48.0
(+40.0/- 7.0)
1737
(+/- 118)
3229
(+/- 364)
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
43.64
(+/- 0.06)
Bentz et al. 2013 ApJ, 767, 149
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.