J/ApJ/834/52 The Megamaser Cosmology Project (MCP). IX. (Gao+, 2017)
The Megamaser Cosmology Project.
IX. Black hole masses for three maser galaxies.
Gao F., Braatz J.A., Reid M.J., Condon J.J., Greene J.E., Henkel C.,
Impellizzeri C.M.V., Lo K.Y., Kuo C.Y., Pesce D.W., Wagner J., Zhao W.
<Astrophys. J., 834, 52-52 (2017)>
=2017ApJ...834...52G 2017ApJ...834...52G (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Interferometry ; Masers
Keywords: accretion, accretion disks; galaxies: active;
quasars: supermassive black holes
Abstract:
As part of the Megamaser Cosmology Project, we present VLBI maps of
nuclear water masers toward five galaxies. The masers originate in
sub-parsec circumnuclear disks. For three of the galaxies, we fit
Keplerian rotation curves to estimate their supermassive black hole
(SMBH) masses, and determine (2.9±0.3)x106M☉ for J0437+2456,
(1.7±0.1)x107M☉ for ESO 558-G009, and (1.1±0.2)x107M☉
for NGC 5495. In the other two galaxies, Mrk 1029 and NGC 1320, the
geometry and dynamics are more complicated and preclude robust black
hole mass estimates. Including our new results, we compiled a list of
15 VLBI-confirmed disk maser galaxies with robust SMBH mass
measurements. With this sample, we confirm the empirical relation of
Rout∝0.3MSMBH reported in Wardle & Yusef-Zadeh
(2012ApJ...750L..38W 2012ApJ...750L..38W). We also find a tentative correlation between
maser disk outer radii and Wide-Field Infrared Survey Explorer
luminosity. We find no correlations of maser disk size with X-ray
2-10keV luminosity or [OIII] luminosity.
Description:
The high-resolution VLBI observations were conducted between 2010 and
2014 using the Very Long Baseline Array (VLBA) together with the GBT,
and in some cases also with the Effelsberg 100m telescope (EB) and the
phased Karl G. Jansky Very Large Array (VLA).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 78 6 Host galaxy properties
table3.dat 63 237 Data for the five sources
table4.dat 79 5 The supermassive black hole (SMBH) masses and
basic properties of the maser galaxies
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See also:
J/ApJ/826/L32 : Black hole masses in megamaser disk galaxies (Greene+, 2016)
J/ApJ/817/128 : Megamaser Cosmology Project. VIII. NGC5765B (Gao+, 2016)
J/ApJ/727/20 : The Megamaser Cosmology Project (MCP). III. (Kuo+, 2011)
J/ApJ/678/96 : Extragalactic H2O masers (Braatz+, 2008)
J/ApJ/652/136 : Water maser emission in five AGNs (Kondratko+, 2006)
J/AJ/126/2125 : SDSS candidate type II quasars (Zakamska+, 2003)
J/ApJS/121/287 : The CfA2S catalog (Huchra+, 1999)
J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)
http://safe.nrao.edu/wiki/bin/view/Main/MegamaserCosmologyProject : MCP project
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy name
13- 14 I2 h RAh Hour of right ascension (J2000) (1)
16- 17 I2 min RAm Minute of right ascension (J2000)
19- 25 F7.4 s RAs Second of right ascension (J2000)
27 A1 --- DE- Sign of declination (J2000) (1)
28- 29 I2 deg DEd Degree of declination (J2000) (1)
31- 32 I2 arcmin DEm Arcminute of declination (J2000)
34- 39 F6.3 arcsec DEs Arcsecond of declination (J2000)
41- 45 F5.1 mas eRA [1.3/500] RA uncertainty
47- 49 I3 mas eDE [2/500] DEC uncertainty
51- 57 A7 --- Ref Source
59- 62 I4 km/s Vlsr [2649/9067]? LSR velocity
64- 65 I2 km/s e_Vlsr [9/40]? Vlsr uncertainty (δV)
67- 70 A4 --- OType AGN type ("Sy 2")
72- 78 A7 --- TType Hubble morphological type
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Note (1): Positions used for data correlation except for J0437+2456. The
position for J0437+2456 (first row) comes from the phase-referenced
observation, which has an offset of (191, 36.7)mas (east, north) from
the correlation position. The position for NGC 5495 comes from
Kondratko et al. (2006ApJ...638..100K 2006ApJ...638..100K).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy name
13- 19 F7.2 km/s Vel [2435.5/9253] Maser line-of-sight velocity
21- 27 F7.4 mas oRA Maser component offset (1)
29- 35 F7.5 mas e_oRA [0.001/0.07] Uncertainty in oRA
37- 43 F7.4 mas oDE Maser component offset (1)
45- 51 F7.5 mas e_oDE [0.003/0.2] Uncertainty in oDE
53- 58 F6.2 --- SB [1.7/116.5] Maser surface brightness (2)
60- 63 F4.2 --- Noise [0.3/2.1] Noise (2)
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Note (1): Positions given in Table 1:
ID = RA (J2000) DE (J2000)
J0437+2456 = 04:37:03.6840 24:56:06.837
ESO558-G009 = 07:04:21.0113 -21:35:18.948
NGC5495 = 02:17:03.566 05:17:31.43
Mrk1029 = 14:12:23.35 -27:06 29.20
NGC1320 = 03:24:48.70 -03:02:32.30
Note (2): In units of mJy/Beam/Channel.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy name
12 A1 --- f_Name [*] Flag on Name (2)
14- 18 F5.1 Mpc Dist [34/121] Distance (3)
20- 22 F3.1 Mpc e_Dist [1.9/6.6] Distance uncertainty
24- 28 E5.2 Msun SMBH Fitted SMBH mass
30- 34 E5.2 Msun e_SMBH [300000/] SMBH mass uncertainty
36- 41 F6.1 km/s Vel [2829/9130] Fitted recession velocity from VLBI
43- 46 F4.1 km/s e_Vel [10/67] Vel uncertainty
48- 51 F4.2 pc Rin [0.04/0.3]? Inner radius of the maser disk (4)
53- 56 F4.2 pc e_Rin [0.03/0.2]? Rin uncertainty
58- 61 F4.2 pc Rout [0.1/0.5]? Outer radius of the maser disk (4)
63- 66 F4.2 pc e_Rout [0.03/0.2]? Rout uncertainty
68- 70 I3 deg PA [20/256] Position angle of the disk
72- 73 I2 deg e_PA [2/10] PA uncertainty
75- 76 I2 deg Inc [79/98] Inclination angle of the disk
78 I1 deg e_Inc ? Inc uncertainty
79 A1 --- f_Inc [*] *: fixed to 90°
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Note (2):
* = We note that since the maser configuration in Mrk 1029 and NGC 1320 are
not typical for a disk maser, their fitted SMBH mass, recession velocity,
disk size, and position angle listed here are just indicative under a
thin disk model. And we cannot estimate the disk inclination angle for
NGC 1320 due to the lack of systemic masers, so we fixed it to 90°.
Note (3): Distance, taken from NED using the Hubble flow with an H0 of
73km/s/Mpc.
Note (4): The inner and outer radius of the maser disk, estimated from the
high-velocity maser features. Please refer to Section 4.2 for a
more comprehensive analysis.
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History:
From electronic version of the journal
References:
Braatz et al. Paper I. 2009ApJ...695..287R 2009ApJ...695..287R
Braatz et al. Paper II. 2010ApJ...718..657B 2010ApJ...718..657B
Kuo et al. Paper III. 2011ApJ...727...20K 2011ApJ...727...20K Cat. J/ApJ/727/20
Reid et al. Paper IV. 2013ApJ...767..154R 2013ApJ...767..154R
Kuo et al. Paper V. 2013ApJ...767..155K 2013ApJ...767..155K
Kuo et al. Paper VI. 2015ApJ...800...26K 2015ApJ...800...26K
Pesce et al. Paper VII. 2015ApJ...810...65P 2015ApJ...810...65P
Gao et al. Paper VIII. 2016ApJ...817..128G 2016ApJ...817..128G Cat. J/ApJ/817/128
Gao et al. Paper IX. 2017ApJ...834...52G 2017ApJ...834...52G This catalog.
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 18-May-2017