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 main-sequence disc galaxies with stellar mass 109 ≤ M⋆/ M⊙ ≤ 5.7 × 1010 at redshift z = 0 from the highest resolution cosmological simulation of the Evolution and Assembly of GaLaxies and their Environments (EAGLE...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Oxford University Press
2018
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Online Access: | http://dro.dur.ac.uk/23912/ http://dro.dur.ac.uk/23912/1/23912.pdf https://doi.org/10.1093/mnras/stx2315 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:23912 2023-05-15T18:11:44+02:00 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 application/pdf http://dro.dur.ac.uk/23912/ http://dro.dur.ac.uk/23912/1/23912.pdf https://doi.org/10.1093/mnras/stx2315 unknown Oxford University Press dro:23912 issn:0035-8711 issn: 1365-2966 doi:10.1093/mnras/stx2315 http://dro.dur.ac.uk/23912/ https://doi.org/10.1093/mnras/stx2315 http://dro.dur.ac.uk/23912/1/23912.pdf This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Monthly notices of the Royal Astronomical Society, 2018, Vol.473(1), pp.380-397 [Peer Reviewed Journal] Article PeerReviewed 2018 ftunivdurham https://doi.org/10.1093/mnras/stx2315 2020-06-04T22:24:22Z This work presents a study of galactic outflows driven by stellar feedback. We extract main-sequence disc galaxies with stellar mass 109 ≤ M⋆/ M⊙ ≤ 5.7 × 1010 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 (ΣSFR), with low-M⋆/low-ΣSFR galaxies showing a narrow peak at low σ (∼30 km s−1) and more active, high-M⋆/high-ΣSFR galaxies reaching σ > 150 km s−1. Although supernova-driven galactic winds in the EAGLE simulations may not entrain enough gas with T <105 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 <105 K; (ii) high-σ tail ⇔ galactic winds ⇔ gas with T ≥105 K. Article in Journal/Newspaper sami Durham University: Durham Research Online Monthly Notices of the Royal Astronomical Society 473 1 380 397 |
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Open Polar |
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Durham University: Durham Research Online |
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ftunivdurham |
language |
unknown |
description |
This work presents a study of galactic outflows driven by stellar feedback. We extract main-sequence disc galaxies with stellar mass 109 ≤ M⋆/ M⊙ ≤ 5.7 × 1010 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 (ΣSFR), with low-M⋆/low-ΣSFR galaxies showing a narrow peak at low σ (∼30 km s−1) and more active, high-M⋆/high-ΣSFR galaxies reaching σ > 150 km s−1. Although supernova-driven galactic winds in the EAGLE simulations may not entrain enough gas with T <105 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 <105 K; (ii) high-σ tail ⇔ galactic winds ⇔ gas with T ≥105 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. |
spellingShingle |
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. |
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. |
publisher |
Oxford University Press |
publishDate |
2018 |
url |
http://dro.dur.ac.uk/23912/ http://dro.dur.ac.uk/23912/1/23912.pdf https://doi.org/10.1093/mnras/stx2315 |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly notices of the Royal Astronomical Society, 2018, Vol.473(1), pp.380-397 [Peer Reviewed Journal] |
op_relation |
dro:23912 issn:0035-8711 issn: 1365-2966 doi:10.1093/mnras/stx2315 http://dro.dur.ac.uk/23912/ https://doi.org/10.1093/mnras/stx2315 http://dro.dur.ac.uk/23912/1/23912.pdf |
op_rights |
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
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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1766184360223965184 |