The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei
We have observed two kinematically offset active galactic nuclei (AGN), whose ionized gas is at a different line-of-sight velocity to their host galaxies, with the Sydney-AAO Multi-object Integral field spectrograph (SAMI). One of the galaxies shows gas kinematics very different from the stellar kin...
Published in: | Monthly Notices of the Royal Astronomical Society |
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fthighwire:oai:open-archive.highwire.org:mnras:451/3/2780 2023-05-15T18:11:27+02:00 The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei Allen, J. T. Schaefer, A. L. Scott, N. Fogarty, L. M. R. Ho, I.-T. Medling, A. M. Leslie, S. K. Bland-Hawthorn, J. Bryant, J. J. Croom, S. M. Goodwin, M. Green, A. W. Konstantopoulos, I. S. Lawrence, J. S. Owers, M. S. Richards, S. N. Sharp, R. 2015-06-17 05:02:29.0 text/html http://mnras.oxfordjournals.org/cgi/content/short/451/3/2780 https://doi.org/10.1093/mnras/stv1121 en eng Oxford University Press http://mnras.oxfordjournals.org/cgi/content/short/451/3/2780 http://dx.doi.org/10.1093/mnras/stv1121 Copyright (C) 2015, Oxford University Press Article TEXT 2015 fthighwire https://doi.org/10.1093/mnras/stv1121 2016-11-16T17:07:03Z We have observed two kinematically offset active galactic nuclei (AGN), whose ionized gas is at a different line-of-sight velocity to their host galaxies, with the Sydney-AAO Multi-object Integral field spectrograph (SAMI). One of the galaxies shows gas kinematics very different from the stellar kinematics, indicating a recent merger or accretion event. We demonstrate that the star formation associated with this event was triggered within the last 100 Myr. The other galaxy shows simple disc rotation in both gas and stellar kinematics, aligned with each other, but in the central region has signatures of an outflow driven by the AGN. Other than the outflow, neither galaxy shows any discontinuity in the ionized gas kinematics at the galaxy's centre. We conclude that in these two cases there is no direct evidence of the AGN being in a supermassive black hole binary system. Our study demonstrates that selecting kinematically offset AGN from single-fibre spectroscopy provides, by definition, samples of kinematically peculiar objects, but integral field spectroscopy or other data are required to determine their true nature. Text sami HighWire Press (Stanford University) Monthly Notices of the Royal Astronomical Society 451 3 2780 2792 |
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Article Allen, J. T. Schaefer, A. L. Scott, N. Fogarty, L. M. R. Ho, I.-T. Medling, A. M. Leslie, S. K. Bland-Hawthorn, J. Bryant, J. J. Croom, S. M. Goodwin, M. Green, A. W. Konstantopoulos, I. S. Lawrence, J. S. Owers, M. S. Richards, S. N. Sharp, R. The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
topic_facet |
Article |
description |
We have observed two kinematically offset active galactic nuclei (AGN), whose ionized gas is at a different line-of-sight velocity to their host galaxies, with the Sydney-AAO Multi-object Integral field spectrograph (SAMI). One of the galaxies shows gas kinematics very different from the stellar kinematics, indicating a recent merger or accretion event. We demonstrate that the star formation associated with this event was triggered within the last 100 Myr. The other galaxy shows simple disc rotation in both gas and stellar kinematics, aligned with each other, but in the central region has signatures of an outflow driven by the AGN. Other than the outflow, neither galaxy shows any discontinuity in the ionized gas kinematics at the galaxy's centre. We conclude that in these two cases there is no direct evidence of the AGN being in a supermassive black hole binary system. Our study demonstrates that selecting kinematically offset AGN from single-fibre spectroscopy provides, by definition, samples of kinematically peculiar objects, but integral field spectroscopy or other data are required to determine their true nature. |
format |
Text |
author |
Allen, J. T. Schaefer, A. L. Scott, N. Fogarty, L. M. R. Ho, I.-T. Medling, A. M. Leslie, S. K. Bland-Hawthorn, J. Bryant, J. J. Croom, S. M. Goodwin, M. Green, A. W. Konstantopoulos, I. S. Lawrence, J. S. Owers, M. S. Richards, S. N. Sharp, R. |
author_facet |
Allen, J. T. Schaefer, A. L. Scott, N. Fogarty, L. M. R. Ho, I.-T. Medling, A. M. Leslie, S. K. Bland-Hawthorn, J. Bryant, J. J. Croom, S. M. Goodwin, M. Green, A. W. Konstantopoulos, I. S. Lawrence, J. S. Owers, M. S. Richards, S. N. Sharp, R. |
author_sort |
Allen, J. T. |
title |
The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
title_short |
The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
title_full |
The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
title_fullStr |
The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
title_full_unstemmed |
The SAMI Galaxy Survey: unveiling the nature of kinematically offset active galactic nuclei |
title_sort |
sami galaxy survey: unveiling the nature of kinematically offset active galactic nuclei |
publisher |
Oxford University Press |
publishDate |
2015 |
url |
http://mnras.oxfordjournals.org/cgi/content/short/451/3/2780 https://doi.org/10.1093/mnras/stv1121 |
genre |
sami |
genre_facet |
sami |
op_relation |
http://mnras.oxfordjournals.org/cgi/content/short/451/3/2780 http://dx.doi.org/10.1093/mnras/stv1121 |
op_rights |
Copyright (C) 2015, Oxford University Press |
op_doi |
https://doi.org/10.1093/mnras/stv1121 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
451 |
container_issue |
3 |
container_start_page |
2780 |
op_container_end_page |
2792 |
_version_ |
1766184114231181312 |