The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation
We study the properties of kinematically disturbed galaxies in the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using a quantitative criterion, based on kinemetry (Krajnovic et al.). The approach, similar to the application of kinemetry by Shapiro et al., uses ionized gas...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Online Access: | https://researchers.mq.edu.au/en/publications/58faad68-a3d4-47fb-baa5-efbcf13d75b6 https://doi.org/10.1093/mnras/stw2605 https://research-management.mq.edu.au/ws/files/62411361/Publisher%20version.pdf http://www.scopus.com/inward/record.url?scp=85014797536&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 http://purl.org/au-research/grants/arc/FT100100457 http://purl.org/au-research/grants/arc/DP130100664 http://purl.org/au-research/grants/arc/FT140101166 |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/58faad68-a3d4-47fb-baa5-efbcf13d75b6 2024-09-15T18:33:16+00:00 The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation Bloom, J. Fogarty, L. M R Croom, S. M. Schaefer, A. L. Bryant, J. J. Cortese, L. Richards, S. N. Bland-Hawthorn, Joss Ho, I. T. Scott, N. Goldstein, Gregory Medling, A. M. Brough, Sarah Sweet, S. M. Cecil, G. N. Lopez Sanchez, Angel Glazebrook, K. Parker, Quentin Allen, J. T. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S. Lawrence, J. S. Lorente, N. P F Owers, Matt Sharp, R. 2017-02-11 application/pdf https://researchers.mq.edu.au/en/publications/58faad68-a3d4-47fb-baa5-efbcf13d75b6 https://doi.org/10.1093/mnras/stw2605 https://research-management.mq.edu.au/ws/files/62411361/Publisher%20version.pdf http://www.scopus.com/inward/record.url?scp=85014797536&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 http://purl.org/au-research/grants/arc/FT100100457 http://purl.org/au-research/grants/arc/DP130100664 http://purl.org/au-research/grants/arc/FT140101166 eng eng info:eu-repo/semantics/openAccess Bloom , J , Fogarty , L M R , Croom , S M , Schaefer , A L , Bryant , J J , Cortese , L , Richards , S N , Bland-Hawthorn , J , Ho , I T , Scott , N , Goldstein , G , Medling , A M , Brough , S , Sweet , S M , Cecil , G N , Lopez Sanchez , A , Glazebrook , K , Parker , Q , Allen , J T , Goodwin , M , Green , A W , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Owers , M & Sharp , R 2017 , ' The SAMI Galaxy Survey : asymmetry in gas kinematics and its links to stellar mass and star formation ' , Monthly Notices of the Royal Astronomical Society , vol. 465 , no. 1 , pp. 123-148 . https://doi.org/10.1093/mnras/stw2605 methods: data analysis techniques: imaging spectroscopy galaxies: evolution galaxies: interactions galaxies: kinematics and dynamics galaxies: structure article 2017 ftmacquarieunicr https://doi.org/10.1093/mnras/stw2605 2024-08-14T23:39:07Z We study the properties of kinematically disturbed galaxies in the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using a quantitative criterion, based on kinemetry (Krajnovic et al.). The approach, similar to the application of kinemetry by Shapiro et al., uses ionized gas kinematics, probed by Ha emission. By this method, 23 +/- 7 per cent of our 360-galaxy sub-sample of the SAMI Galaxy Survey are kinematically asymmetric. Visual classifications agree with our kinemetric results for 90 per cent of asymmetric and 95 per cent of normal galaxies. We find that stellar mass and kinematic asymmetry are inversely correlated and that kinematic asymmetry is both more frequent and stronger in low-mass galaxies. This builds on previous studies that found high fractions of kinematic asymmetry in low-mass galaxies using a variety of different methods. Concentration of star formation and kinematic disturbance are found to be correlated, confirming results found in previous work. This effect is stronger for high-mass galaxies (log(M-*) > 10) and indicates that kinematic disturbance is linked to centrally concentrated star formation. Comparison of the inner (within 0.5R(e)) and outer Ha equivalent widths of asymmetric and normal galaxies shows a small but significant increase in inner equivalent width for asymmetric galaxies. Article in Journal/Newspaper sami Macquarie University Research Portal Monthly Notices of the Royal Astronomical Society 465 1 123 148 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
methods: data analysis techniques: imaging spectroscopy galaxies: evolution galaxies: interactions galaxies: kinematics and dynamics galaxies: structure |
spellingShingle |
methods: data analysis techniques: imaging spectroscopy galaxies: evolution galaxies: interactions galaxies: kinematics and dynamics galaxies: structure Bloom, J. Fogarty, L. M R Croom, S. M. Schaefer, A. L. Bryant, J. J. Cortese, L. Richards, S. N. Bland-Hawthorn, Joss Ho, I. T. Scott, N. Goldstein, Gregory Medling, A. M. Brough, Sarah Sweet, S. M. Cecil, G. N. Lopez Sanchez, Angel Glazebrook, K. Parker, Quentin Allen, J. T. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S. Lawrence, J. S. Lorente, N. P F Owers, Matt Sharp, R. The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
topic_facet |
methods: data analysis techniques: imaging spectroscopy galaxies: evolution galaxies: interactions galaxies: kinematics and dynamics galaxies: structure |
description |
We study the properties of kinematically disturbed galaxies in the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using a quantitative criterion, based on kinemetry (Krajnovic et al.). The approach, similar to the application of kinemetry by Shapiro et al., uses ionized gas kinematics, probed by Ha emission. By this method, 23 +/- 7 per cent of our 360-galaxy sub-sample of the SAMI Galaxy Survey are kinematically asymmetric. Visual classifications agree with our kinemetric results for 90 per cent of asymmetric and 95 per cent of normal galaxies. We find that stellar mass and kinematic asymmetry are inversely correlated and that kinematic asymmetry is both more frequent and stronger in low-mass galaxies. This builds on previous studies that found high fractions of kinematic asymmetry in low-mass galaxies using a variety of different methods. Concentration of star formation and kinematic disturbance are found to be correlated, confirming results found in previous work. This effect is stronger for high-mass galaxies (log(M-*) > 10) and indicates that kinematic disturbance is linked to centrally concentrated star formation. Comparison of the inner (within 0.5R(e)) and outer Ha equivalent widths of asymmetric and normal galaxies shows a small but significant increase in inner equivalent width for asymmetric galaxies. |
format |
Article in Journal/Newspaper |
author |
Bloom, J. Fogarty, L. M R Croom, S. M. Schaefer, A. L. Bryant, J. J. Cortese, L. Richards, S. N. Bland-Hawthorn, Joss Ho, I. T. Scott, N. Goldstein, Gregory Medling, A. M. Brough, Sarah Sweet, S. M. Cecil, G. N. Lopez Sanchez, Angel Glazebrook, K. Parker, Quentin Allen, J. T. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S. Lawrence, J. S. Lorente, N. P F Owers, Matt Sharp, R. |
author_facet |
Bloom, J. Fogarty, L. M R Croom, S. M. Schaefer, A. L. Bryant, J. J. Cortese, L. Richards, S. N. Bland-Hawthorn, Joss Ho, I. T. Scott, N. Goldstein, Gregory Medling, A. M. Brough, Sarah Sweet, S. M. Cecil, G. N. Lopez Sanchez, Angel Glazebrook, K. Parker, Quentin Allen, J. T. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S. Lawrence, J. S. Lorente, N. P F Owers, Matt Sharp, R. |
author_sort |
Bloom, J. |
title |
The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
title_short |
The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
title_full |
The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
title_fullStr |
The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
title_full_unstemmed |
The SAMI Galaxy Survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
title_sort |
sami galaxy survey:asymmetry in gas kinematics and its links to stellar mass and star formation |
publishDate |
2017 |
url |
https://researchers.mq.edu.au/en/publications/58faad68-a3d4-47fb-baa5-efbcf13d75b6 https://doi.org/10.1093/mnras/stw2605 https://research-management.mq.edu.au/ws/files/62411361/Publisher%20version.pdf http://www.scopus.com/inward/record.url?scp=85014797536&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 http://purl.org/au-research/grants/arc/FT100100457 http://purl.org/au-research/grants/arc/DP130100664 http://purl.org/au-research/grants/arc/FT140101166 |
genre |
sami |
genre_facet |
sami |
op_source |
Bloom , J , Fogarty , L M R , Croom , S M , Schaefer , A L , Bryant , J J , Cortese , L , Richards , S N , Bland-Hawthorn , J , Ho , I T , Scott , N , Goldstein , G , Medling , A M , Brough , S , Sweet , S M , Cecil , G N , Lopez Sanchez , A , Glazebrook , K , Parker , Q , Allen , J T , Goodwin , M , Green , A W , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Owers , M & Sharp , R 2017 , ' The SAMI Galaxy Survey : asymmetry in gas kinematics and its links to stellar mass and star formation ' , Monthly Notices of the Royal Astronomical Society , vol. 465 , no. 1 , pp. 123-148 . https://doi.org/10.1093/mnras/stw2605 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stw2605 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
465 |
container_issue |
1 |
container_start_page |
123 |
op_container_end_page |
148 |
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1810474970518650880 |