THE MEGAMASER COSMOLOGY PROJECT. IX. BLACK HOLE MASSES for THREE MASER GALAXIES

F. Gao; J. A. Braatz; M. J. Reid; J. J. Condon; J. E. Greene; C. Henkel; C. M.V. Impellizzeri; K. Y. Lo; C. Y. Kuo; D. W. Pesce; J. Wagner; W. Zhao

doi:10.3847/1538-4357/834/1/52

THE MEGAMASER COSMOLOGY PROJECT. IX. BLACK HOLE MASSES for THREE MASER GALAXIES

F. Gao, J. A. Braatz, M. J. Reid, J. J. Condon, J. E. Greene, C. Henkel, C. M.V. Impellizzeri, K. Y. Lo, C. Y. Kuo, D. W. Pesce, J. Wagner, W. Zhao

Astrophysical Sciences

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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) × 10⁶ M _o- for J0437+2456, (1.7 ± 0.1) × 10⁷ M _o- for ESO 558-G009, and (1.1 ± 0.2) × 10⁷ M _o- 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 R _out ∝ 0.3M _SMBH reported in Wardle & Yusef-Zadeh. 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 2-10 keV luminosity or [O iii] luminosity.

Original language	English (US)
Article number	52
Journal	Astrophysical Journal
Volume	834
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/834/1/52
State	Published - Jan 1 2017

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

accretion, accretion disks
galaxies: active
quasars: supermassive black holes

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10.3847/1538-4357/834/1/52

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title = "THE MEGAMASER COSMOLOGY PROJECT. IX. BLACK HOLE MASSES for THREE MASER GALAXIES",

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) × 106 M o- for J0437+2456, (1.7 ± 0.1) × 107 M o- for ESO 558-G009, and (1.1 ± 0.2) × 107 M o- 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 R out ∝ 0.3M SMBH reported in Wardle & Yusef-Zadeh. 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 2-10 keV luminosity or [O iii] luminosity.",

keywords = "accretion, accretion disks, galaxies: active, quasars: supermassive black holes",

author = "F. Gao and Braatz, {J. A.} and Reid, {M. J.} and Condon, {J. J.} and Greene, {J. E.} and C. Henkel and Impellizzeri, {C. M.V.} and Lo, {K. Y.} and Kuo, {C. Y.} and Pesce, {D. W.} and J. Wagner and W. Zhao",

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T1 - THE MEGAMASER COSMOLOGY PROJECT. IX. BLACK HOLE MASSES for THREE MASER GALAXIES

AU - Gao, F.

AU - Braatz, J. A.

AU - Reid, M. J.

AU - Condon, J. J.

AU - Greene, J. E.

AU - Henkel, C.

AU - Impellizzeri, C. M.V.

AU - Lo, K. Y.

AU - Kuo, C. Y.

AU - Pesce, D. W.

AU - Wagner, J.

AU - Zhao, W.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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) × 106 M o- for J0437+2456, (1.7 ± 0.1) × 107 M o- for ESO 558-G009, and (1.1 ± 0.2) × 107 M o- 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 R out ∝ 0.3M SMBH reported in Wardle & Yusef-Zadeh. 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 2-10 keV luminosity or [O iii] luminosity.

AB - 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) × 106 M o- for J0437+2456, (1.7 ± 0.1) × 107 M o- for ESO 558-G009, and (1.1 ± 0.2) × 107 M o- 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 R out ∝ 0.3M SMBH reported in Wardle & Yusef-Zadeh. 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 2-10 keV luminosity or [O iii] luminosity.

KW - accretion, accretion disks

KW - galaxies: active

KW - quasars: supermassive black holes

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VL - 834

JO - Astrophysical Journal

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ER -

THE MEGAMASER COSMOLOGY PROJECT. IX. BLACK HOLE MASSES for THREE MASER GALAXIES

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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