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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Online Access: | http://researchonline.ljmu.ac.uk/id/eprint/7812/ https://researchonline.ljmu.ac.uk/id/eprint/7812/1/tescari_2018.pdf https://doi.org/10.1093/mnras/stx2315 |
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ftliverpooljmu:oai:researchonline.ljmu.ac.uk:7812 2023-05-15T18:11:48+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, JSB Ho, I-T Crain, RA Bland-Hawthorn, J Croom, SM Kewley, LJ Schaye, J Bower, RG Theuns, T Schaller, M Barnes, L Brough, S Bryant, JJ Goodwin, M Gunawardhana, MLP Lawrence, JS Leslie, SK Lopez-Sanchez, AR Lorente, NPF Medling, AM Richards, SN Sweet, SM Tonini, C 2017-09-09 text http://researchonline.ljmu.ac.uk/id/eprint/7812/ https://researchonline.ljmu.ac.uk/id/eprint/7812/1/tescari_2018.pdf https://doi.org/10.1093/mnras/stx2315 en eng Oxford University Press https://researchonline.ljmu.ac.uk/id/eprint/7812/1/tescari_2018.pdf Tescari, E, Cortese, L, Power, C, Wyithe, JSB, Ho, I-T, Crain, RA, Bland-Hawthorn, J, Croom, SM, Kewley, LJ, Schaye, J, Bower, RG, Theuns, T, Schaller, M, Barnes, L, Brough, S, Bryant, JJ, Goodwin, M, Gunawardhana, MLP, Lawrence, JS, Leslie, SK, Lopez-Sanchez, AR, Lorente, NPF, Medling, AM, Richards, SN, Sweet, SM and Tonini, C (2017) The SAMI Galaxy Survey: understanding observations of large-scale outflows at low redshift with EAGLE simulations. Monthly Notices of the Royal Astronomical Society, 473 (1). pp. 380-397. ISSN 0035-8711 doi:10.1093/mnras/stx2315 QB Astronomy QC Physics Article PeerReviewed 2017 ftliverpooljmu https://doi.org/10.1093/mnras/stx2315 2022-01-09T06:53:37Z 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 Liverpool John Moores University: LJMU Research Online Monthly Notices of the Royal Astronomical Society 473 1 380 397 |
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Open Polar |
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Liverpool John Moores University: LJMU Research Online |
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ftliverpooljmu |
language |
English |
topic |
QB Astronomy QC Physics |
spellingShingle |
QB Astronomy QC Physics Tescari, E Cortese, L Power, C Wyithe, JSB Ho, I-T Crain, RA Bland-Hawthorn, J Croom, SM Kewley, LJ Schaye, J Bower, RG Theuns, T Schaller, M Barnes, L Brough, S Bryant, JJ Goodwin, M Gunawardhana, MLP Lawrence, JS Leslie, SK Lopez-Sanchez, AR Lorente, NPF Medling, AM Richards, SN Sweet, SM Tonini, C The SAMI Galaxy Survey: understanding observations of large-scale outflows at low redshift with EAGLE simulations |
topic_facet |
QB Astronomy QC Physics |
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, JSB Ho, I-T Crain, RA Bland-Hawthorn, J Croom, SM Kewley, LJ Schaye, J Bower, RG Theuns, T Schaller, M Barnes, L Brough, S Bryant, JJ Goodwin, M Gunawardhana, MLP Lawrence, JS Leslie, SK Lopez-Sanchez, AR Lorente, NPF Medling, AM Richards, SN Sweet, SM Tonini, C |
author_facet |
Tescari, E Cortese, L Power, C Wyithe, JSB Ho, I-T Crain, RA Bland-Hawthorn, J Croom, SM Kewley, LJ Schaye, J Bower, RG Theuns, T Schaller, M Barnes, L Brough, S Bryant, JJ Goodwin, M Gunawardhana, MLP Lawrence, JS Leslie, SK Lopez-Sanchez, AR Lorente, NPF Medling, AM Richards, SN Sweet, SM 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 |
2017 |
url |
http://researchonline.ljmu.ac.uk/id/eprint/7812/ https://researchonline.ljmu.ac.uk/id/eprint/7812/1/tescari_2018.pdf https://doi.org/10.1093/mnras/stx2315 |
genre |
sami |
genre_facet |
sami |
op_relation |
https://researchonline.ljmu.ac.uk/id/eprint/7812/1/tescari_2018.pdf Tescari, E, Cortese, L, Power, C, Wyithe, JSB, Ho, I-T, Crain, RA, Bland-Hawthorn, J, Croom, SM, Kewley, LJ, Schaye, J, Bower, RG, Theuns, T, Schaller, M, Barnes, L, Brough, S, Bryant, JJ, Goodwin, M, Gunawardhana, MLP, Lawrence, JS, Leslie, SK, Lopez-Sanchez, AR, Lorente, NPF, Medling, AM, Richards, SN, Sweet, SM and Tonini, C (2017) The SAMI Galaxy Survey: understanding observations of large-scale outflows at low redshift with EAGLE simulations. Monthly Notices of the Royal Astronomical Society, 473 (1). pp. 380-397. ISSN 0035-8711 doi:10.1093/mnras/stx2315 |
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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1766184419510452224 |