The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations
This work presents a study of galactic outflows driven by stellar feedback. We extract mainsequence disc galaxies with stellar mass 10 9 ≤ M * / M ⊙ ≤ 5.7 × 10 10 at redshift z = 0 from the highest resolution cosmological simulation of the Evolution and Assembly of GaLaxies and their Environments (E...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Online Access: | https://researchers.mq.edu.au/en/publications/dded2d44-2007-499f-849d-72b7a992d919 https://doi.org/10.1093/mnras/stx2315 http://www.scopus.com/inward/record.url?scp=85045950179&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/dded2d44-2007-499f-849d-72b7a992d919 2024-09-30T14:42:26+00:00 The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations Tescari, E. Cortese, L. Power, C. Wyithe, J. S.B. Ho, I.-T. Crain, R. A. Bland-Hawthorn, J. Croom, S. M. Kewley, L. J. Schaye, J. Bower, R. G. Theuns, T. Schaller, M. Barnes, L. Brough, S. Bryant, J. J. Goodwin, M. Gunawardhana, M. L. P. Lawrence, J. S. Leslie, S. K. López-Sánchez, Á. R. Lorente, N. P. F. Medling, A. M. Richards, S. N. Sweet, S. M. Tonini, C. 2018-01-01 https://researchers.mq.edu.au/en/publications/dded2d44-2007-499f-849d-72b7a992d919 https://doi.org/10.1093/mnras/stx2315 http://www.scopus.com/inward/record.url?scp=85045950179&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Tescari , E , Cortese , L , Power , C , Wyithe , J S B , Ho , I-T , Crain , R A , Bland-Hawthorn , J , Croom , S M , Kewley , L J , Schaye , J , Bower , R G , Theuns , T , Schaller , M , Barnes , L , Brough , S , Bryant , J J , Goodwin , M , Gunawardhana , M L P , Lawrence , J S , Leslie , S K , López-Sánchez , Á R , Lorente , N P F , Medling , A M , Richards , S N , Sweet , S M & Tonini , C 2018 , ' The SAMI Galaxy Survey : understanding observations of large-scale outflows at low redshift with EAGLE simulations ' , Monthly Notices of the Royal Astronomical Society , vol. 473 , no. 1 , pp. 380-397 . https://doi.org/10.1093/mnras/stx2315 Galaxies: evolution Galaxies: kinematics and dynamics Methods: numerical article 2018 ftmacquarieunicr https://doi.org/10.1093/mnras/stx2315 2024-09-04T23:52:01Z This work presents a study of galactic outflows driven by stellar feedback. We extract mainsequence disc galaxies with stellar mass 10 9 ≤ M * / M ⊙ ≤ 5.7 × 10 10 at redshift z = 0 from the highest resolution cosmological simulation of the Evolution and Assembly of GaLaxies and their Environments (EAGLE) set. Synthetic gas rotation velocity and velocity dispersion (σ) maps are created and compared to observations of disc galaxies obtained with the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI), where σ-values greater than 150 km s -1 are most naturally explained by bipolar outflows powered by starburst activity. We find that the extension of the simulated edge-on (pixelated) velocity dispersion probability distribution depends on stellar mass and star formation rate surface density (Σ SFR ), with low-M * /low-Σ SFR galaxies showing a narrow peak at low s (~30 km s -1 ) and more active, high-M * /high-Σ SFR galaxies reaching σ > 150 km s -1 . Although supernova-driven galactic winds in the EAGLE simulations may not entrain enough gas with T < 10 5 K compared to observed galaxies, we find that gas temperature is a good proxy for the presence of outflows. There is a direct correlation between the thermal state of the gas and its state of motion as described by the σ-distribution. The following equivalence relations hold in EAGLE: (i) low-σ peak ⇔ disc of the galaxy ⇔ gas with T < 10 5 K; (ii) high-σ tail ⇔ galactic winds ⇔ gas with T ≥10 5 K. Article in Journal/Newspaper sami Macquarie University Research Portal Monthly Notices of the Royal Astronomical Society 473 1 380 397 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
Galaxies: evolution Galaxies: kinematics and dynamics Methods: numerical |
spellingShingle |
Galaxies: evolution Galaxies: kinematics and dynamics Methods: numerical Tescari, E. Cortese, L. Power, C. Wyithe, J. S.B. Ho, I.-T. Crain, R. A. Bland-Hawthorn, J. Croom, S. M. Kewley, L. J. Schaye, J. Bower, R. G. Theuns, T. Schaller, M. Barnes, L. Brough, S. Bryant, J. J. Goodwin, M. Gunawardhana, M. L. P. Lawrence, J. S. Leslie, S. K. López-Sánchez, Á. R. Lorente, N. P. F. Medling, A. M. Richards, S. N. Sweet, S. M. Tonini, C. The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
topic_facet |
Galaxies: evolution Galaxies: kinematics and dynamics Methods: numerical |
description |
This work presents a study of galactic outflows driven by stellar feedback. We extract mainsequence disc galaxies with stellar mass 10 9 ≤ M * / M ⊙ ≤ 5.7 × 10 10 at redshift z = 0 from the highest resolution cosmological simulation of the Evolution and Assembly of GaLaxies and their Environments (EAGLE) set. Synthetic gas rotation velocity and velocity dispersion (σ) maps are created and compared to observations of disc galaxies obtained with the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI), where σ-values greater than 150 km s -1 are most naturally explained by bipolar outflows powered by starburst activity. We find that the extension of the simulated edge-on (pixelated) velocity dispersion probability distribution depends on stellar mass and star formation rate surface density (Σ SFR ), with low-M * /low-Σ SFR galaxies showing a narrow peak at low s (~30 km s -1 ) and more active, high-M * /high-Σ SFR galaxies reaching σ > 150 km s -1 . Although supernova-driven galactic winds in the EAGLE simulations may not entrain enough gas with T < 10 5 K compared to observed galaxies, we find that gas temperature is a good proxy for the presence of outflows. There is a direct correlation between the thermal state of the gas and its state of motion as described by the σ-distribution. The following equivalence relations hold in EAGLE: (i) low-σ peak ⇔ disc of the galaxy ⇔ gas with T < 10 5 K; (ii) high-σ tail ⇔ galactic winds ⇔ gas with T ≥10 5 K. |
format |
Article in Journal/Newspaper |
author |
Tescari, E. Cortese, L. Power, C. Wyithe, J. S.B. Ho, I.-T. Crain, R. A. Bland-Hawthorn, J. Croom, S. M. Kewley, L. J. Schaye, J. Bower, R. G. Theuns, T. Schaller, M. Barnes, L. Brough, S. Bryant, J. J. Goodwin, M. Gunawardhana, M. L. P. Lawrence, J. S. Leslie, S. K. López-Sánchez, Á. R. Lorente, N. P. F. Medling, A. M. Richards, S. N. Sweet, S. M. Tonini, C. |
author_facet |
Tescari, E. Cortese, L. Power, C. Wyithe, J. S.B. Ho, I.-T. Crain, R. A. Bland-Hawthorn, J. Croom, S. M. Kewley, L. J. Schaye, J. Bower, R. G. Theuns, T. Schaller, M. Barnes, L. Brough, S. Bryant, J. J. Goodwin, M. Gunawardhana, M. L. P. Lawrence, J. S. Leslie, S. K. López-Sánchez, Á. R. Lorente, N. P. F. Medling, A. M. Richards, S. N. Sweet, S. M. Tonini, C. |
author_sort |
Tescari, E. |
title |
The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
title_short |
The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
title_full |
The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
title_fullStr |
The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
title_full_unstemmed |
The SAMI Galaxy Survey:understanding observations of large-scale outflows at low redshift with EAGLE simulations |
title_sort |
sami galaxy survey:understanding observations of large-scale outflows at low redshift with eagle simulations |
publishDate |
2018 |
url |
https://researchers.mq.edu.au/en/publications/dded2d44-2007-499f-849d-72b7a992d919 https://doi.org/10.1093/mnras/stx2315 http://www.scopus.com/inward/record.url?scp=85045950179&partnerID=8YFLogxK |
genre |
sami |
genre_facet |
sami |
op_source |
Tescari , E , Cortese , L , Power , C , Wyithe , J S B , Ho , I-T , Crain , R A , Bland-Hawthorn , J , Croom , S M , Kewley , L J , Schaye , J , Bower , R G , Theuns , T , Schaller , M , Barnes , L , Brough , S , Bryant , J J , Goodwin , M , Gunawardhana , M L P , Lawrence , J S , Leslie , S K , López-Sánchez , Á R , Lorente , N P F , Medling , A M , Richards , S N , Sweet , S M & Tonini , C 2018 , ' The SAMI Galaxy Survey : understanding observations of large-scale outflows at low redshift with EAGLE simulations ' , Monthly Notices of the Royal Astronomical Society , vol. 473 , no. 1 , pp. 380-397 . https://doi.org/10.1093/mnras/stx2315 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1093/mnras/stx2315 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
473 |
container_issue |
1 |
container_start_page |
380 |
op_container_end_page |
397 |
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1811644502510665728 |