Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI
Recent integral field spectroscopy observations have found that about 11% of galaxies show star-gas misalignment. The misalignment possibly results from external effects such as gas accretion, interaction with other objects, and other environmental effects, hence providing clues to these effects. We...
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ftdatacite:10.48550/arxiv.1911.06825 2023-05-15T18:11:10+02:00 Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI Khim, Donghyeon J. Yi, Sukyoung K. Dubois, Yohan Bryant, Julia J. Pichon, Christophe Croom, Scott M. Bland-Hawthorn, Joss Brough, Sarah Choi, Hoseung Devriendt, Julien Groves, Brent Owers, Matt S. Richards, Samuel N. van de Sande, Jesse Sweet, Sarah M. 2019 https://dx.doi.org/10.48550/arxiv.1911.06825 https://arxiv.org/abs/1911.06825 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Article CreativeWork article Preprint 2019 ftdatacite https://doi.org/10.48550/arxiv.1911.06825 2022-03-10T16:34:35Z Recent integral field spectroscopy observations have found that about 11% of galaxies show star-gas misalignment. The misalignment possibly results from external effects such as gas accretion, interaction with other objects, and other environmental effects, hence providing clues to these effects. We explore the properties of misaligned galaxies using Horizon-AGN, a large-volume cosmological simulation, and compare the result with the result of the Sydney-AAO Multi-object integral field spectrograph (SAMI) Galaxy Survey. Horizon-AGN can match the overall misalignment fraction and reproduces the distribution of misalignment angles found by observations surprisingly closely. The misalignment fraction is found to be highly correlated with galaxy morphology both in observations and in the simulation: early-type galaxies are substantially more frequently misaligned than late-type galaxies. The gas fraction is another important factor associated with misalignment in the sense that misalignment increases with decreasing gas fraction. However, there is a significant discrepancy between the SAMI and Horizon-AGN data in the misalignment fraction for the galaxies in dense (cluster) environments. We discuss possible origins of misalignment and disagreement. : 23 pages with 15 figures. Accepted for publication in ApJ Article in Journal/Newspaper sami DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
spellingShingle |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Khim, Donghyeon J. Yi, Sukyoung K. Dubois, Yohan Bryant, Julia J. Pichon, Christophe Croom, Scott M. Bland-Hawthorn, Joss Brough, Sarah Choi, Hoseung Devriendt, Julien Groves, Brent Owers, Matt S. Richards, Samuel N. van de Sande, Jesse Sweet, Sarah M. Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
topic_facet |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
description |
Recent integral field spectroscopy observations have found that about 11% of galaxies show star-gas misalignment. The misalignment possibly results from external effects such as gas accretion, interaction with other objects, and other environmental effects, hence providing clues to these effects. We explore the properties of misaligned galaxies using Horizon-AGN, a large-volume cosmological simulation, and compare the result with the result of the Sydney-AAO Multi-object integral field spectrograph (SAMI) Galaxy Survey. Horizon-AGN can match the overall misalignment fraction and reproduces the distribution of misalignment angles found by observations surprisingly closely. The misalignment fraction is found to be highly correlated with galaxy morphology both in observations and in the simulation: early-type galaxies are substantially more frequently misaligned than late-type galaxies. The gas fraction is another important factor associated with misalignment in the sense that misalignment increases with decreasing gas fraction. However, there is a significant discrepancy between the SAMI and Horizon-AGN data in the misalignment fraction for the galaxies in dense (cluster) environments. We discuss possible origins of misalignment and disagreement. : 23 pages with 15 figures. Accepted for publication in ApJ |
format |
Article in Journal/Newspaper |
author |
Khim, Donghyeon J. Yi, Sukyoung K. Dubois, Yohan Bryant, Julia J. Pichon, Christophe Croom, Scott M. Bland-Hawthorn, Joss Brough, Sarah Choi, Hoseung Devriendt, Julien Groves, Brent Owers, Matt S. Richards, Samuel N. van de Sande, Jesse Sweet, Sarah M. |
author_facet |
Khim, Donghyeon J. Yi, Sukyoung K. Dubois, Yohan Bryant, Julia J. Pichon, Christophe Croom, Scott M. Bland-Hawthorn, Joss Brough, Sarah Choi, Hoseung Devriendt, Julien Groves, Brent Owers, Matt S. Richards, Samuel N. van de Sande, Jesse Sweet, Sarah M. |
author_sort |
Khim, Donghyeon J. |
title |
Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
title_short |
Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
title_full |
Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
title_fullStr |
Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
title_full_unstemmed |
Star-gas misalignment in galaxies: I. The properties of galaxies from the Horizon-AGN simulation and comparisons to SAMI |
title_sort |
star-gas misalignment in galaxies: i. the properties of galaxies from the horizon-agn simulation and comparisons to sami |
publisher |
arXiv |
publishDate |
2019 |
url |
https://dx.doi.org/10.48550/arxiv.1911.06825 https://arxiv.org/abs/1911.06825 |
genre |
sami |
genre_facet |
sami |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1911.06825 |
_version_ |
1766183866836451328 |