The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history
We investigate a sample of 40 local, main-sequence, edge-on disc galaxies using integral field spectroscopy with the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to understand the link between properties of the extraplanar gas and their host galaxies. The kinematics prope...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/152580 2024-01-14T10:10:23+01:00 The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history Ho, I-Ting Medling, Anne Bland-Hawthorn, Jonathan Groves, Brent Allan Kewley, Lisa Kobayashi, Chiaki Dopita, Michael Leslie, Sarah Sharp, Robert Allen, James T Bourne, N. Bryant, J. Cortese, L Croom, S Dunne, Loretta Fogarty, Lisa M R Goodwin, Michael Green, Andrew W Konstantopoulos, I S Lawrence, J S Lorente, N.P.F. Owers, M S Richards, Samuel Sweet, Sarah Tescari, Edoardo Valiante, Elisabetta application/pdf http://hdl.handle.net/1885/152580 https://doi.org/10.1093/mnras/stw017 https://openresearch-repository.anu.edu.au/bitstream/1885/152580/5/01_Ho_The_SAMI_Galaxy_Survey%253A_2016.pdf.jpg unknown Blackwell Publishing Ltd 0035-8711 http://hdl.handle.net/1885/152580 doi:10.1093/mnras/stw017 https://openresearch-repository.anu.edu.au/bitstream/1885/152580/5/01_Ho_The_SAMI_Galaxy_Survey%253A_2016.pdf.jpg Monthly Notices of the Royal Astronomical Society Journal article ftanucanberra https://doi.org/10.1093/mnras/stw017 2023-12-15T09:33:51Z We investigate a sample of 40 local, main-sequence, edge-on disc galaxies using integral field spectroscopy with the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to understand the link between properties of the extraplanar gas and their host galaxies. The kinematics properties of the extraplanar gas, including velocity asymmetries and increased dispersion, are used to differentiate galaxies hosting large-scale galactic winds from those dominated by the extended diffuse ionized gas. We find rather that a spectrum of diffuse gas-dominated to wind-dominated galaxies exist. The wind-dominated galaxies span a wide range of star formation rates (SFRs; −1 ≲ log (SFR/M⊙ yr−1) ≲ 0.5) across the whole stellar mass range of the sample (8.5 ≲ log (M*/M⊙) ≲ 11). The wind galaxies also span a wide range in SFR surface densities (10− 3–10− 1.5 M⊙ yr− 1 kpc− 2) that is much lower than the canonical threshold of 0.1 M⊙ yr− 1 kpc− 2. The wind galaxies on average have higher SFR surface densities and higher HδA values than those without strong wind signatures. The enhanced HδA indicates that bursts of star formation in the recent past are necessary for driving large-scale galactic winds. We demonstrate with Sloan Digital Sky Survey data that galaxies with high SFR surface density have experienced bursts of star formation in the recent past. Our results imply that the galactic winds revealed in our study are indeed driven by bursts of star formation, and thus probing star formation in the time domain is crucial for finding and understanding galactic winds. Article in Journal/Newspaper sami Australian National University: ANU Digital Collections Monthly Notices of the Royal Astronomical Society 457 2 1257 1278 |
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Australian National University: ANU Digital Collections |
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ftanucanberra |
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description |
We investigate a sample of 40 local, main-sequence, edge-on disc galaxies using integral field spectroscopy with the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to understand the link between properties of the extraplanar gas and their host galaxies. The kinematics properties of the extraplanar gas, including velocity asymmetries and increased dispersion, are used to differentiate galaxies hosting large-scale galactic winds from those dominated by the extended diffuse ionized gas. We find rather that a spectrum of diffuse gas-dominated to wind-dominated galaxies exist. The wind-dominated galaxies span a wide range of star formation rates (SFRs; −1 ≲ log (SFR/M⊙ yr−1) ≲ 0.5) across the whole stellar mass range of the sample (8.5 ≲ log (M*/M⊙) ≲ 11). The wind galaxies also span a wide range in SFR surface densities (10− 3–10− 1.5 M⊙ yr− 1 kpc− 2) that is much lower than the canonical threshold of 0.1 M⊙ yr− 1 kpc− 2. The wind galaxies on average have higher SFR surface densities and higher HδA values than those without strong wind signatures. The enhanced HδA indicates that bursts of star formation in the recent past are necessary for driving large-scale galactic winds. We demonstrate with Sloan Digital Sky Survey data that galaxies with high SFR surface density have experienced bursts of star formation in the recent past. Our results imply that the galactic winds revealed in our study are indeed driven by bursts of star formation, and thus probing star formation in the time domain is crucial for finding and understanding galactic winds. |
format |
Article in Journal/Newspaper |
author |
Ho, I-Ting Medling, Anne Bland-Hawthorn, Jonathan Groves, Brent Allan Kewley, Lisa Kobayashi, Chiaki Dopita, Michael Leslie, Sarah Sharp, Robert Allen, James T Bourne, N. Bryant, J. Cortese, L Croom, S Dunne, Loretta Fogarty, Lisa M R Goodwin, Michael Green, Andrew W Konstantopoulos, I S Lawrence, J S Lorente, N.P.F. Owers, M S Richards, Samuel Sweet, Sarah Tescari, Edoardo Valiante, Elisabetta |
spellingShingle |
Ho, I-Ting Medling, Anne Bland-Hawthorn, Jonathan Groves, Brent Allan Kewley, Lisa Kobayashi, Chiaki Dopita, Michael Leslie, Sarah Sharp, Robert Allen, James T Bourne, N. Bryant, J. Cortese, L Croom, S Dunne, Loretta Fogarty, Lisa M R Goodwin, Michael Green, Andrew W Konstantopoulos, I S Lawrence, J S Lorente, N.P.F. Owers, M S Richards, Samuel Sweet, Sarah Tescari, Edoardo Valiante, Elisabetta The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
author_facet |
Ho, I-Ting Medling, Anne Bland-Hawthorn, Jonathan Groves, Brent Allan Kewley, Lisa Kobayashi, Chiaki Dopita, Michael Leslie, Sarah Sharp, Robert Allen, James T Bourne, N. Bryant, J. Cortese, L Croom, S Dunne, Loretta Fogarty, Lisa M R Goodwin, Michael Green, Andrew W Konstantopoulos, I S Lawrence, J S Lorente, N.P.F. Owers, M S Richards, Samuel Sweet, Sarah Tescari, Edoardo Valiante, Elisabetta |
author_sort |
Ho, I-Ting |
title |
The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
title_short |
The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
title_full |
The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
title_fullStr |
The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
title_full_unstemmed |
The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
title_sort |
sami galaxy survey: extraplanar gas, galactic winds and their association with star formation history |
publisher |
Blackwell Publishing Ltd |
url |
http://hdl.handle.net/1885/152580 https://doi.org/10.1093/mnras/stw017 https://openresearch-repository.anu.edu.au/bitstream/1885/152580/5/01_Ho_The_SAMI_Galaxy_Survey%253A_2016.pdf.jpg |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society |
op_relation |
0035-8711 http://hdl.handle.net/1885/152580 doi:10.1093/mnras/stw017 https://openresearch-repository.anu.edu.au/bitstream/1885/152580/5/01_Ho_The_SAMI_Galaxy_Survey%253A_2016.pdf.jpg |
op_doi |
https://doi.org/10.1093/mnras/stw017 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
457 |
container_issue |
2 |
container_start_page |
1257 |
op_container_end_page |
1278 |
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1788065073137188864 |