The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies
We investigate the energy sources of random turbulent motions of ionized gas from H α emission in eight local star-forming galaxies from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey. These galaxies satisfy strict pure star-forming selection criteria to avoid contam...
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ftcaltechauth:oai:authors.library.caltech.edu:z6xyq-qm510 2024-06-23T07:56:31+00:00 The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies Zhou, Luwenjia Federrath, Christoph Yuan, Tiantian Bian, Fuyan Medling, Anne M. Shi, Yong Bland-Hawthorn, Joss Bryant, Julia J. Brough, Sarah Catinella, Barbara Croom, Scott M. Goodwin, Michael Goldstein, Gregory Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Owers, Matt S. Richards, Samuel N. Sanchez, Sebastian F. 2017-10 https://doi.org/10.1093/mnras/stx1504 unknown Royal Astronomical Society https://arxiv.org/abs/1706.04754 https://doi.org/10.1093/mnras/stx1504 oai:authors.library.caltech.edu:z6xyq-qm510 eprintid:81446 resolverid:CaltechAUTHORS:20170914-132934739 info:eu-repo/semantics/openAccess Other Monthly Notices of the Royal Astronomical Society, 470(4), 4573-4582, (2017-10) ISM: kinematics and dynamics galaxies: ISM galaxies: star formation info:eu-repo/semantics/article 2017 ftcaltechauth https://doi.org/10.1093/mnras/stx1504 2024-06-12T02:07:24Z We investigate the energy sources of random turbulent motions of ionized gas from H α emission in eight local star-forming galaxies from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey. These galaxies satisfy strict pure star-forming selection criteria to avoid contamination from active galactic nuclei (AGNs) or strong shocks/outflows. Using the relatively high spatial and spectral resolution of SAMI, we find that – on sub-kpc scales, our galaxies display a flat distribution of ionized gas velocity dispersion as a function of star formation rate (SFR) surface density. A major fraction of our SAMI galaxies shows higher velocity dispersion than predictions by feedback-driven models, especially at the low SFR surface density end. Our results suggest that additional sources beyond star formation feedback contribute to driving random motions of the interstellar medium in star-forming galaxies. We speculate that gravity, galactic shear and/or magnetorotational instability may be additional driving sources of turbulence in these galaxies. © 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Received: 18 March 2017. Revision Received: 13 June 2017. Accepted: 14 June 2017. Published: 20 June 2017. LZ and YS acknowledge support for this work from the National Natural Science Foundation of China (NSFC grant 11373021) and the Excellent Youth Foundation of the Jiangsu Scientific Committee (grant BK20150014). CF gratefully acknowledges funding provided by the Australian Research Council's Discovery Projects (grants DP150104329 and DP170100603). Support for AMM is provided by NASA through Hubble Fellowship grant no. HST-HF2-51377 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc. for NASA, under contract NAS5-26555. We thank R. Genzel, N. Förster Schreiber, M.D. Lehnert and N.P.H. Nesvadba for their support on providing high-z measurements displayed in this ... Article in Journal/Newspaper sami Caltech Authors (California Institute of Technology) Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) Monthly Notices of the Royal Astronomical Society 470 4 4573 4582 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
unknown |
topic |
ISM: kinematics and dynamics galaxies: ISM galaxies: star formation |
spellingShingle |
ISM: kinematics and dynamics galaxies: ISM galaxies: star formation Zhou, Luwenjia Federrath, Christoph Yuan, Tiantian Bian, Fuyan Medling, Anne M. Shi, Yong Bland-Hawthorn, Joss Bryant, Julia J. Brough, Sarah Catinella, Barbara Croom, Scott M. Goodwin, Michael Goldstein, Gregory Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Owers, Matt S. Richards, Samuel N. Sanchez, Sebastian F. The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
topic_facet |
ISM: kinematics and dynamics galaxies: ISM galaxies: star formation |
description |
We investigate the energy sources of random turbulent motions of ionized gas from H α emission in eight local star-forming galaxies from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey. These galaxies satisfy strict pure star-forming selection criteria to avoid contamination from active galactic nuclei (AGNs) or strong shocks/outflows. Using the relatively high spatial and spectral resolution of SAMI, we find that – on sub-kpc scales, our galaxies display a flat distribution of ionized gas velocity dispersion as a function of star formation rate (SFR) surface density. A major fraction of our SAMI galaxies shows higher velocity dispersion than predictions by feedback-driven models, especially at the low SFR surface density end. Our results suggest that additional sources beyond star formation feedback contribute to driving random motions of the interstellar medium in star-forming galaxies. We speculate that gravity, galactic shear and/or magnetorotational instability may be additional driving sources of turbulence in these galaxies. © 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Received: 18 March 2017. Revision Received: 13 June 2017. Accepted: 14 June 2017. Published: 20 June 2017. LZ and YS acknowledge support for this work from the National Natural Science Foundation of China (NSFC grant 11373021) and the Excellent Youth Foundation of the Jiangsu Scientific Committee (grant BK20150014). CF gratefully acknowledges funding provided by the Australian Research Council's Discovery Projects (grants DP150104329 and DP170100603). Support for AMM is provided by NASA through Hubble Fellowship grant no. HST-HF2-51377 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc. for NASA, under contract NAS5-26555. We thank R. Genzel, N. Förster Schreiber, M.D. Lehnert and N.P.H. Nesvadba for their support on providing high-z measurements displayed in this ... |
format |
Article in Journal/Newspaper |
author |
Zhou, Luwenjia Federrath, Christoph Yuan, Tiantian Bian, Fuyan Medling, Anne M. Shi, Yong Bland-Hawthorn, Joss Bryant, Julia J. Brough, Sarah Catinella, Barbara Croom, Scott M. Goodwin, Michael Goldstein, Gregory Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Owers, Matt S. Richards, Samuel N. Sanchez, Sebastian F. |
author_facet |
Zhou, Luwenjia Federrath, Christoph Yuan, Tiantian Bian, Fuyan Medling, Anne M. Shi, Yong Bland-Hawthorn, Joss Bryant, Julia J. Brough, Sarah Catinella, Barbara Croom, Scott M. Goodwin, Michael Goldstein, Gregory Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Owers, Matt S. Richards, Samuel N. Sanchez, Sebastian F. |
author_sort |
Zhou, Luwenjia |
title |
The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
title_short |
The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
title_full |
The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
title_fullStr |
The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
title_full_unstemmed |
The SAMI Galaxy Survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
title_sort |
sami galaxy survey: energy sources of the turbulent velocity dispersion in spatially resolved local star-forming galaxies |
publisher |
Royal Astronomical Society |
publishDate |
2017 |
url |
https://doi.org/10.1093/mnras/stx1504 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
Hubble |
geographic_facet |
Hubble |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society, 470(4), 4573-4582, (2017-10) |
op_relation |
https://arxiv.org/abs/1706.04754 https://doi.org/10.1093/mnras/stx1504 oai:authors.library.caltech.edu:z6xyq-qm510 eprintid:81446 resolverid:CaltechAUTHORS:20170914-132934739 |
op_rights |
info:eu-repo/semantics/openAccess Other |
op_doi |
https://doi.org/10.1093/mnras/stx1504 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
470 |
container_issue |
4 |
container_start_page |
4573 |
op_container_end_page |
4582 |
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1802649659543388160 |