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Mrk817
Alternate Names:
PG1434+590
  ACS, HRC, F550M
RA = 14:36:22.1   Dec = +58:47:39   z = 0.03146
DL =  134.2 Mpc     DA =  126.1 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):
3.856 (+ 0.608/- 0.588)   (107 Msun)
3.856 (+ 0.608/- 0.588)   (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.

λ4861
49000 - 49212
20.9
(+ 2.3/- 2.3)
Zu et al. 2011 ApJ, 735, 80
19.0
(+ 3.9/- 3.7)
20.0
(+ 2.0/- 5.0)
1392
(+/- 78)
3515
(+/- 393)
Peterson et al. 1998 ApJ, 501, 82

Peterson et al. 2004 ApJ, 613, 682
43.73
(+/- 0.05)
Bentz et al. 2013 ApJ, 767, 149

λ4861
49404 - 49528
17.2
(+ 1.9/- 2.7)
Zu et al. 2011 ApJ, 735, 80
15.3
(+ 3.7/- 3.5)
16.0
(+ 3.0/- 4.0)
1971
(+/- 96)
4952
(+/- 537)
Peterson et al. 1998 ApJ, 501, 82
43.61
(+/- 0.05)
Bentz et al. 2013 ApJ, 767, 149

λ4861
49752 - 49924
35.9
(+ 4.8/- 5.8)
Zu et al. 2011 ApJ, 735, 80
33.6
(+ 6.5/- 7.6)
35.0
(+10.0/- 7.0)
1729
(+/- 158)
3752
(+/- 995)
Peterson et al. 1998 ApJ, 501, 82
43.61
(+/- 0.05)
Bentz et al. 2013 ApJ, 767, 149

λ4861
54180 - 54330
10.8
(+ 1.5/- 1.0)
Zu et al. 2011 ApJ, 735, 80
14.0
(+ 3.4/- 3.5)
16.0
(+ 3.9/- 5.3)
...
...
Denney et al. 2010 ApJ, 721, 715
43.78
(+/- 0.05)
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.