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PG1226+023
Alternate Names:
3C273
  ACS, HRC, F550M
RA = 12:29:06.7   Dec = +02:03:09   z = 0.15834
DL =  735.7 Mpc     DA =  548.3 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):
81.275 (+22.750/-27.715)   (107 Msun)
69.003 (+13.395/-15.810)   (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
48361 - 50997
263.8
(+ 9.0/-10.6)
Zu et al. 2011 ApJ, 735, 80
262.8
(+53.4/-67.3)
265.0
(+41.0/-41.0)
1688
(+/- 142)
3274
(+/- 484)
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
45.90
(+/- 0.02)
Bentz et al. 2013 ApJ, 767, 149

λ4861
48361 - 50997
105.5
(+284.1/- 5.2)
Zu et al. 2011 ApJ, 735, 80
306.8
(+68.5/-90.9)
291.0
(+93.0/-81.0)
1777
(+/- 150)
2598
(+/- 299)
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
45.90
(+/- 0.02)
Bentz et al. 2013 ApJ, 767, 149

λ6563
48361 - 50997
380.0
(+40.7/- 6.0)
Zu et al. 2011 ApJ, 735, 80
435.5
(+49.6/-51.9)
395.0
(+180.0/-53.0)
...
...
Kaspi et al. 2000 ApJ, 533, 631

Peterson et al. 2004 ApJ, 613, 682
45.90
(+/- 0.02)
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.