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NGC5548
Alternate Names:
 Mrk1509 Mrk9027
  WFC3, UVIS, F547M
RA = 14:17:59.5   Dec = +25:08:12   z = 0.01718
DL =  72.5 Mpc     DA =  70.1 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): 		4.818 (+ 0.206/- 0.201)   (107 Msun)
4.918 (+ 0.183/- 0.179)   (107 Msun)
MBH (RM modeling):
 3.240 (+ 2.260/- 0.890)   (107 Msun)
Pancoast et al. 2014 MNRAS, 445, 3073


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.
1215
λ1215
56690 - 56865
5.8
(+ 0.4/- 0.4)
De Rosa et al. 2015 ApJ, 806, 128
6.2
(+ 0.3/- 0.2)
6.1
(+ 0.4/- 0.5)
...
...
De Rosa et al. 2015 ApJ, 806, 128
...
Si IV
λ1400
47510 - 47745
...
12.3
(+ 3.4/- 3.0)
13.0
(+ 2.0/- 4.0)
2576
(+/- 389)
6455
(+/- 3030)
Clavel et al. 1991 ApJ, 366, 64

Peterson et al. 2004 ApJ, 613, 682
...
Si IV
λ1400
49097 - 49135
...
4.3
(+ 1.1/- 1.0)
4.0
(+ 2.0/- 1.0)
4014
(+/- 253)
7044
(+/- 1849)
Korista et al. 1995 ApJ, 97, 285
...
Si IV
λ1400
56690 - 56865
5.9
(+ 0.5/- 0.6)
De Rosa et al. 2015 ApJ, 806, 128
5.4
(+ 0.7/- 0.7)
5.5
(+ 1.1/- 1.1)
...
...
De Rosa et al. 2015 ApJ, 806, 128
...
C IV
λ1549
47510 - 47745
...
9.8
(+ 1.9/- 1.5)
10.0
(+ 1.0/- 3.0)
3842
(+/- 210)
6556
(+/- 878)
Clavel et al. 1991 ApJ, 366, 64

Peterson et al. 2004 ApJ, 613, 682
...
C IV
λ1549
49060 - 49135
...
6.7
(+ 0.9/- 1.0)
5.0
(+ 2.0/- 1.0)
3328
(+/- 104)
6868
(+/- 450)
Korista et al. 1995 ApJ, 97, 285
...
C IV
λ1549
56690 - 56865
4.6
(+ 0.7/- 0.4)
De Rosa et al. 2015 ApJ, 806, 128
5.3
(+ 0.4/- 0.5)
5.2
(+ 0.7/- 0.6)
...
...
De Rosa et al. 2015 ApJ, 806, 128
...
He II
λ1640
47510 - 47745
...
3.8
(+ 1.7/- 1.8)
2.0
(+ 4.0/- 1.0)
3897
(+/- 264)
9803
(+/- 1594)
Clavel et al. 1991 ApJ, 366, 64

Peterson et al. 2004 ApJ, 613, 682
...
He II
λ1640
49097 - 49135
...
1.9
(+ 0.3/- 0.3)
2.0
(+ 0.5/- 0.5)
4397
(+/- 154)
8929
(+/- 1571)
Korista et al. 1995 ApJ, 97, 285

Peterson et al. 2004 ApJ, 613, 682
...
He II
λ1640
56690 - 56865
2.4
(+ 0.7/- 0.1)
De Rosa et al. 2015 ApJ, 806, 128
2.5
(+ 0.3/- 0.3)
2.4
(+ 0.3/- 0.8)
...
...
De Rosa et al. 2015 ApJ, 806, 128
...
C III]
λ1909
47510 - 47745
...
27.4
(+ 5.4/- 5.3)
26.0
(+11.0/- 4.0)
2360
(+/- 222)
5018
(+/- 1458)
Clavel et al. 1991 ApJ, 366, 64

Peterson et al. 2004 ApJ, 613, 682
...
C III]
λ1909
49097 - 49135
...
13.9
(+ 1.8/- 1.4)
15.0
(+ 1.0/- 2.0)
3227
(+/- 176)
4895
(+/- 1263)
Korista et al. 1995 ApJ, 97, 285

Peterson et al. 2004 ApJ, 613, 682
...
He II
λ4686
47509 - 47797
...
7.8
(+ 3.2/- 3.0)
8.0
(+ 3.0/- 3.0)
2850
(+/- 151)
7338
(+/- 901)
Dietrich et al. 1993 ApJ, 408, 416

Peterson et al. 2004 ApJ, 613, 682
43.33
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
He II
λ4686
56663 - 56828
0.16
(+0.37/-0.37)
Pei et al. 2017 ApJ, 837, 131
0.79
(+0.35/-0.34)
0.49
(+0.25/-0.25)
...
...
Pei et al. 2017 ApJ, 837, 131
43.40
(+/- 0.03)
Dalla Bonta et al. 2020 ApJ, 903, 112
Hβ
λ4861
47212 - 47360
...
7.8
(+ 3.8/- 2.8)
7.0
(+ 5.0/- 2.0)
3078
(+/- 197)
8047
(+/- 1268)
Netzer et al. 1990 ApJ, 353, 108
...
Hβ
λ4861
47509 - 47809
21.2
(+ 0.8/- 1.0)
Zu et al. 2011 ApJ, 735, 80
19.7
(+ 1.5/- 1.5)
22.0
(+ 2.0/- 5.0)
1687
(+/- 56)
4044
(+/- 199)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.33
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
47861 - 48179
16.3
(+ 0.8/- 1.3)
Zu et al. 2011 ApJ, 735, 80
18.6
(+ 2.1/- 2.3)
18.0
(+ 2.0/- 2.0)
1882
(+/- 83)
4664
(+/- 324)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.07
(+/- 0.11)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
48225 - 48534
15.8
(+ 2.1/- 1.1)
Zu et al. 2011 ApJ, 735, 80
15.9
(+ 2.9/- 2.5)
16.0
(+ 3.0/- 4.0)
2075
(+/- 81)
5776
(+/- 237)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.26
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
48623 - 48898
11.0
(+ 1.2/- 1.0)
Zu et al. 2011 ApJ, 735, 80
11.0
(+ 1.9/- 2.0)
11.0
(+ 3.0/- 2.0)
2264
(+/- 88)
5691
(+/- 164)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.00
(+/- 0.11)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
48954 - 49255
15.3
(+ 1.4/- 3.0)
Zu et al. 2011 ApJ, 735, 80
13.0
(+ 1.6/- 1.4)
12.0
(+ 2.0/- 2.0)
1909
(+/- 129)
...
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.27
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
49309 - 49636
10.8
(+ 1.4/- 1.0)
Zu et al. 2011 ApJ, 735, 80
13.4
(+ 3.8/- 4.3)
9.0
(+ 8.0/- 3.0)
2895
(+/- 114)
7202
(+/- 392)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.29
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
49679 - 50008
24.2
(+ 1.3/- 0.9)
Zu et al. 2011 ApJ, 735, 80
21.7
(+ 2.6/- 2.6)
23.0
(+ 4.0/- 3.0)
2247
(+/- 134)
6142
(+/- 289)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.44
(+/- 0.09)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
50044 - 50373
16.1
(+ 0.3/- 0.6)
Zu et al. 2011 ApJ, 735, 80
16.4
(+ 1.2/- 1.1)
15.0
(+ 2.0/- 1.0)
2026
(+/- 68)
5706
(+/- 357)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.32
(+/- 0.09)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
50100 - 52400
43.4
(+47.4/-38.4)
Kovacevik et al. 2014 AdSpR, 54, 1414
...
...
...
...
Kovacevik et al. 2014 AdSpR, 54, 1414
...
Hβ
λ4861
50434 - 50729
16.8
(+ 0.4/- 0.2)
Zu et al. 2011 ApJ, 735, 80
17.5
(+ 2.0/- 1.6)
17.0
(+ 4.0/- 1.0)
1923
(+/- 62)
5541
(+/- 354)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.11
(+/- 0.10)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
50775 - 51085
26.9
(+ 1.5/- 2.2)
Zu et al. 2011 ApJ, 735, 80
26.5
(+ 4.3/- 2.2)
29.0
(+ 3.0/- 8.0)
1732
(+/- 76)
4596
(+/- 505)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.46
(+/- 0.09)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
51142 - 51456
23.8
(+ 3.1/- 2.3)
Zu et al. 2011 ApJ, 735, 80
24.8
(+ 3.2/- 3.0)
25.0
(+11.0/- 9.0)
1980
(+/- 30)
6377
(+/- 147)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
43.38
(+/- 0.09)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
51517 - 51791
8.8
(+ 1.3/- 3.9)
Zu et al. 2011 ApJ, 735, 80
6.5
(+ 5.7/- 3.7)
9.0
(+ 4.0/- 6.0)
1969
(+/- 48)
5957
(+/- 224)
Peterson et al. 2002 ApJ, 581, 197

Peterson et al. 2004 ApJ, 613, 682
42.92
(+/- 0.12)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
51878 - 52174
8.7
(+ 0.5/- 0.5)
Zu et al. 2011 ApJ, 735, 80
14.3
(+ 5.9/- 7.3)
9.0
(+13.0/- 3.0)
2173
(+/- 89)
6247
(+/- 343)
Peterson et al. 2002 ApJ, 581, 197
42.90
(+/- 0.13)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
53432 - 53472
...
6.3
(+ 2.6/- 2.3)
6.4
(+ 2.5/- 2.5)
2388
(+/- 373)
...
Bentz et al. 2007 ApJ, 662, 205
42.53
(+/- 0.24)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
54180 - 54332
16.3
(+ 1.0/- 1.2)
Zu et al. 2011 ApJ, 735, 80
12.4
(+ 2.7/- 3.9)
6.1
(+ 9.4/- 2.8)
1822
(+/- 35)
4849
(+/- 112)
Denney et al. 2010 ApJ, 721, 715
42.66
(+/- 0.18)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
54508 - 54618
5.5
(+ 0.6/- 0.7)
Grier et al. 2013 ApJ, 773, 90
4.2
(+ 0.9/- 1.3)
4.2
(+ 1.2/- 1.5)
4270
(+/- 292)
11177
(+/- 2266)
Bentz et al. 2009 ApJ, 705, 199
42.62
(+/- 0.17)
Peterson et al. 2013 ApJ, 779, 109
Hβ
λ4861
55931 - 56071
3.66
(+0.53/-0.52)
De Rosa et al. 2018 ApJ, 866, 133
2.83
(+0.88/-0.96)
2.66
(+1.06/-1.55)
2772
(+/- 34)
7038
(+/- 122)
De Rosa et al. 2018 ApJ, 866, 133
43.07
(+/- 0.06)
Dalla Bonta et al. 2020 ApJ, 903, 112
Hβ
λ4861
56663 - 56828
3.84
(+0.57/-0.59)
Pei et al. 2017 ApJ, 837, 131
4.17
(+0.36/-0.36)
4.42
(+0.98/-0.25)
4278
(+/- 671)
10161
(+/- 587)
Pei et al. 2017 ApJ, 837, 131
43.40
(+/- 0.03)
Dalla Bonta et al. 2020 ApJ, 903, 112
Hα
λ6563
47212 - 47360
...
7.4
(+ 5.7/- 5.2)
6.0
(+ 9.0/- 5.0)
...
...
Netzer et al. 1990 ApJ, 353, 108

Peterson et al. 2004 ApJ, 613, 682
...
Hα
λ6563
50100 - 52400
45.5
(+49.1/-39.9)
Kovacevik et al. 2014 AdSpR, 54, 1414
...
...
...
...
Kovacevik et al. 2014 AdSpR, 54, 1414
...
Hα
λ6563
54508 - 54618
...
10.8
(+ 1.2/- 1.1)
11.3
(+ 1.2/- 2.0)
3562
(+/- 121)
1559
(+/- 3115)
Bentz et al. 2010 ApJ, 716, 993
42.62
(+/- 0.17)
Peterson et al. 2013 ApJ, 779, 109
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.