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...
Published in: | Monthly Notices of the Royal Astronomical Society |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Oxford University Press
2016
|
Subjects: | |
Online Access: | http://mnras.oxfordjournals.org/cgi/content/short/457/2/1257 https://doi.org/10.1093/mnras/stw017 |
id |
fthighwire:oai:open-archive.highwire.org:mnras:457/2/1257 |
---|---|
record_format |
openpolar |
spelling |
fthighwire:oai:open-archive.highwire.org:mnras:457/2/1257 2023-05-15T18:11:52+02:00 The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history Ho (何宜庭), I-Ting Medling, Anne M. Bland-Hawthorn, Joss Groves, Brent Kewley, Lisa J. Kobayashi, Chiaki Dopita, Michael A. Leslie, Sarah K. Sharp, Rob Allen, James T. Bourne, Nathan Bryant, Julia J. Cortese, Luca Croom, Scott M. Dunne, Loretta Fogarty, L. M. R. Goodwin, Michael Green, Andy W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Lorente, Nuria P. F. Owers, Matt S. Richards, Samuel Sweet, Sarah M. Tescari, Edoardo Valiante, Elisabetta 2016-02-01 20:31:28.0 text/html http://mnras.oxfordjournals.org/cgi/content/short/457/2/1257 https://doi.org/10.1093/mnras/stw017 en eng Oxford University Press http://mnras.oxfordjournals.org/cgi/content/short/457/2/1257 http://dx.doi.org/10.1093/mnras/stw017 Copyright (C) 2016, Oxford University Press Article TEXT 2016 fthighwire https://doi.org/10.1093/mnras/stw017 2016-11-16T17:30:28Z 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 Hδ A values than those without strong wind signatures. The enhanced Hδ A 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. Text sami HighWire Press (Stanford University) Monthly Notices of the Royal Astronomical Society 457 2 1257 1278 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Article |
spellingShingle |
Article Ho (何宜庭), I-Ting Medling, Anne M. Bland-Hawthorn, Joss Groves, Brent Kewley, Lisa J. Kobayashi, Chiaki Dopita, Michael A. Leslie, Sarah K. Sharp, Rob Allen, James T. Bourne, Nathan Bryant, Julia J. Cortese, Luca Croom, Scott M. Dunne, Loretta Fogarty, L. M. R. Goodwin, Michael Green, Andy W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Lorente, Nuria P. F. Owers, Matt S. Richards, Samuel Sweet, Sarah M. Tescari, Edoardo Valiante, Elisabetta The SAMI Galaxy Survey: extraplanar gas, galactic winds and their association with star formation history |
topic_facet |
Article |
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 Hδ A values than those without strong wind signatures. The enhanced Hδ A 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 |
Text |
author |
Ho (何宜庭), I-Ting Medling, Anne M. Bland-Hawthorn, Joss Groves, Brent Kewley, Lisa J. Kobayashi, Chiaki Dopita, Michael A. Leslie, Sarah K. Sharp, Rob Allen, James T. Bourne, Nathan Bryant, Julia J. Cortese, Luca Croom, Scott M. Dunne, Loretta Fogarty, L. M. R. Goodwin, Michael Green, Andy W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Lorente, Nuria P. F. Owers, Matt S. Richards, Samuel Sweet, Sarah M. Tescari, Edoardo Valiante, Elisabetta |
author_facet |
Ho (何宜庭), I-Ting Medling, Anne M. Bland-Hawthorn, Joss Groves, Brent Kewley, Lisa J. Kobayashi, Chiaki Dopita, Michael A. Leslie, Sarah K. Sharp, Rob Allen, James T. Bourne, Nathan Bryant, Julia J. Cortese, Luca Croom, Scott M. Dunne, Loretta Fogarty, L. M. R. Goodwin, Michael Green, Andy W. Konstantopoulos, Iraklis S. Lawrence, Jon S. Lorente, Nuria P. F. Owers, Matt S. Richards, Samuel Sweet, Sarah M. Tescari, Edoardo Valiante, Elisabetta |
author_sort |
Ho (何宜庭), 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 |
Oxford University Press |
publishDate |
2016 |
url |
http://mnras.oxfordjournals.org/cgi/content/short/457/2/1257 https://doi.org/10.1093/mnras/stw017 |
genre |
sami |
genre_facet |
sami |
op_relation |
http://mnras.oxfordjournals.org/cgi/content/short/457/2/1257 http://dx.doi.org/10.1093/mnras/stw017 |
op_rights |
Copyright (C) 2016, Oxford University Press |
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 |
_version_ |
1766184472478220288 |