The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence
We infer the intrinsic ionized gas kinematics for 383 star-forming galaxies across a range of integrated star formation rates (SFR is an element of [10(-3), 10(2)] M-circle dot yr(-1)) at z less than or similar to 0.1 using a consistent 3D forward-modelling technique. The total sample is a combinati...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Oxford University Press (OUP)
2020
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Online Access: | http://hdl.handle.net/1959.3/456557 https://doi.org/10.1093/mnras/staa1272 |
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ftswinburne:tle:190bd347-b8ce-4bbb-8f87-d4f96e58d18a:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 |
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ftswinburne:tle:190bd347-b8ce-4bbb-8f87-d4f96e58d18a:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T18:11:17+02:00 The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence Varidel, Mathew R. Croom, Scott M. Lewis, Geraint F. Fisher, Deanne B. Glazebrook, Karl Catinella, Barbara Cortese, Luca Krumholz, Mark R. Bland-Hawthorn, Joss Bryant, Julia J. Groves, Brent Brough, Sarah Federrath, Christoph Lawrence, Jon S. Lorente, Nuria P. Owers, Matt S. Richards, Samuel N. López-Sánchez, Ángel R. Sweet, Sarah M. van de Sande, Jesse Vaughan, Sam P. Swinburne University of Technology 2020 http://hdl.handle.net/1959.3/456557 https://doi.org/10.1093/mnras/staa1272 unknown Oxford University Press (OUP) http://hdl.handle.net/1959.3/456557 https://doi.org/10.1093/mnras/staa1272 Copyright © 2020 Monthly Notices of the Royal Astronomical Society, Vol. 495, no. 2 (Jun 2020), pp. 2265-2284 Journal article 2020 ftswinburne https://doi.org/10.1093/mnras/staa1272 2020-07-20T22:25:26Z We infer the intrinsic ionized gas kinematics for 383 star-forming galaxies across a range of integrated star formation rates (SFR is an element of [10(-3), 10(2)] M-circle dot yr(-1)) at z less than or similar to 0.1 using a consistent 3D forward-modelling technique. The total sample is a combination of galaxies from the Sydney-AAO Multiobject Integral field Spectrograph (SAMI) Galaxy survey and DYnamics of Newly Assembled Massive Objects survey. For typical low-z galaxies taken from the SAMI Galaxy Survey, we find the vertical velocity dispersion (sigma(v,z)) to be positively correlated with measures of SFR, stellar mass, HI gas mass, and rotational velocity. The greatest correlation is with SFR surface density (Sigma(SFR)). Using the total sample, we find sigma(v,z) increases slowly as a function of integrated SFR in the range SFR is an element of [10(-3), 1] M-circle dot yr(-1) from 17 +/- 3 to 24 +/- 5 kms(-1) followed by a steeper increase up to sigma(v,z) similar to 80 km s(-1) for SFR greater than or similar to 1M(circle dot) yr(-1). This is consistent with recent theoretical models that suggest a sv, z floor driven by star formation feedback processes with an upturn in sv, z at higher SFR driven by gravitational transport of gas through the disc. Article in Journal/Newspaper sami Swinburne University of Technology: Swinburne Research Bank Monthly Notices of the Royal Astronomical Society 495 2 2265 2284 |
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Swinburne University of Technology: Swinburne Research Bank |
op_collection_id |
ftswinburne |
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unknown |
description |
We infer the intrinsic ionized gas kinematics for 383 star-forming galaxies across a range of integrated star formation rates (SFR is an element of [10(-3), 10(2)] M-circle dot yr(-1)) at z less than or similar to 0.1 using a consistent 3D forward-modelling technique. The total sample is a combination of galaxies from the Sydney-AAO Multiobject Integral field Spectrograph (SAMI) Galaxy survey and DYnamics of Newly Assembled Massive Objects survey. For typical low-z galaxies taken from the SAMI Galaxy Survey, we find the vertical velocity dispersion (sigma(v,z)) to be positively correlated with measures of SFR, stellar mass, HI gas mass, and rotational velocity. The greatest correlation is with SFR surface density (Sigma(SFR)). Using the total sample, we find sigma(v,z) increases slowly as a function of integrated SFR in the range SFR is an element of [10(-3), 1] M-circle dot yr(-1) from 17 +/- 3 to 24 +/- 5 kms(-1) followed by a steeper increase up to sigma(v,z) similar to 80 km s(-1) for SFR greater than or similar to 1M(circle dot) yr(-1). This is consistent with recent theoretical models that suggest a sv, z floor driven by star formation feedback processes with an upturn in sv, z at higher SFR driven by gravitational transport of gas through the disc. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Varidel, Mathew R. Croom, Scott M. Lewis, Geraint F. Fisher, Deanne B. Glazebrook, Karl Catinella, Barbara Cortese, Luca Krumholz, Mark R. Bland-Hawthorn, Joss Bryant, Julia J. Groves, Brent Brough, Sarah Federrath, Christoph Lawrence, Jon S. Lorente, Nuria P. Owers, Matt S. Richards, Samuel N. López-Sánchez, Ángel R. Sweet, Sarah M. van de Sande, Jesse Vaughan, Sam P. |
spellingShingle |
Varidel, Mathew R. Croom, Scott M. Lewis, Geraint F. Fisher, Deanne B. Glazebrook, Karl Catinella, Barbara Cortese, Luca Krumholz, Mark R. Bland-Hawthorn, Joss Bryant, Julia J. Groves, Brent Brough, Sarah Federrath, Christoph Lawrence, Jon S. Lorente, Nuria P. Owers, Matt S. Richards, Samuel N. López-Sánchez, Ángel R. Sweet, Sarah M. van de Sande, Jesse Vaughan, Sam P. The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
author_facet |
Varidel, Mathew R. Croom, Scott M. Lewis, Geraint F. Fisher, Deanne B. Glazebrook, Karl Catinella, Barbara Cortese, Luca Krumholz, Mark R. Bland-Hawthorn, Joss Bryant, Julia J. Groves, Brent Brough, Sarah Federrath, Christoph Lawrence, Jon S. Lorente, Nuria P. Owers, Matt S. Richards, Samuel N. López-Sánchez, Ángel R. Sweet, Sarah M. van de Sande, Jesse Vaughan, Sam P. |
author_sort |
Varidel, Mathew R. |
title |
The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
title_short |
The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
title_full |
The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
title_fullStr |
The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
title_full_unstemmed |
The SAMI galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
title_sort |
sami galaxy survey: gas velocity dispersions in low-z star-forming galaxies and the drivers of turbulence |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://hdl.handle.net/1959.3/456557 https://doi.org/10.1093/mnras/staa1272 |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society, Vol. 495, no. 2 (Jun 2020), pp. 2265-2284 |
op_relation |
http://hdl.handle.net/1959.3/456557 https://doi.org/10.1093/mnras/staa1272 |
op_rights |
Copyright © 2020 |
op_doi |
https://doi.org/10.1093/mnras/staa1272 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
495 |
container_issue |
2 |
container_start_page |
2265 |
op_container_end_page |
2284 |
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1766183964475654144 |