The global warming of group satellite galaxies
Recent studies adopting $λ_{\rm Re}$, a proxy for specific angular momentum, have highlighted how early-type galaxies (ETGs) are composed of two kinematic classes for which distinct formation mechanisms can be inferred. With upcoming surveys expected to obtain $λ_{\rm Re}$ from a broad range of envi...
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ftdatacite:10.48550/arxiv.1604.05807 2023-05-15T18:12:40+02:00 The global warming of group satellite galaxies Yozin, C Bekki, K 2016 https://dx.doi.org/10.48550/arxiv.1604.05807 https://arxiv.org/abs/1604.05807 unknown arXiv https://dx.doi.org/10.1093/mnras/stw960 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Astrophysics of Galaxies astro-ph.GA FOS Physical sciences article-journal Article ScholarlyArticle Text 2016 ftdatacite https://doi.org/10.48550/arxiv.1604.05807 https://doi.org/10.1093/mnras/stw960 2022-04-01T11:34:15Z Recent studies adopting $λ_{\rm Re}$, a proxy for specific angular momentum, have highlighted how early-type galaxies (ETGs) are composed of two kinematic classes for which distinct formation mechanisms can be inferred. With upcoming surveys expected to obtain $λ_{\rm Re}$ from a broad range of environments (e.g. SAMI, MaNGA), we investigate in this numerical study how the $λ_{\rm Re}$-$ε_{\rm e}$ distribution of fast-rotating dwarf satellite galaxies reflects their evolutionary state. By combining N-body/SPH simulations of progenitor disc galaxies (stellar mass $\simeq$10$^{\rm 9}$ M$_{\odot}$), their cosmologically-motivated sub-halo infall history and a characteristic group orbit/potential, we demonstrate the evolution of a satellite ETG population driven by tidal interactions (e.g. harassment). As a general result, these satellites remain intrinsically fast-rotating oblate stellar systems since their infall as early as $z=2$; mis-identifications as slow rotators often arise due to a bar/spiral lifecycle which plays an integral role in their evolution. Despite the idealistic nature of its construction, our mock $λ_{\rm Re}$-$ε_{\rm e}$ distribution at $z<0.1$ reproduces its observational counterpart from the ATLAS$^{\rm 3D}$/SAURON projects. We predict therefore how the observed $λ_{\rm Re}$-$ε_{\rm e}$ distribution of a group evolves according to these ensemble tidal interactions. : 8 pages, 2 tables, 6 figures, accepted for publication in MNRAS Text sami DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
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Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Yozin, C Bekki, K The global warming of group satellite galaxies |
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Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
description |
Recent studies adopting $λ_{\rm Re}$, a proxy for specific angular momentum, have highlighted how early-type galaxies (ETGs) are composed of two kinematic classes for which distinct formation mechanisms can be inferred. With upcoming surveys expected to obtain $λ_{\rm Re}$ from a broad range of environments (e.g. SAMI, MaNGA), we investigate in this numerical study how the $λ_{\rm Re}$-$ε_{\rm e}$ distribution of fast-rotating dwarf satellite galaxies reflects their evolutionary state. By combining N-body/SPH simulations of progenitor disc galaxies (stellar mass $\simeq$10$^{\rm 9}$ M$_{\odot}$), their cosmologically-motivated sub-halo infall history and a characteristic group orbit/potential, we demonstrate the evolution of a satellite ETG population driven by tidal interactions (e.g. harassment). As a general result, these satellites remain intrinsically fast-rotating oblate stellar systems since their infall as early as $z=2$; mis-identifications as slow rotators often arise due to a bar/spiral lifecycle which plays an integral role in their evolution. Despite the idealistic nature of its construction, our mock $λ_{\rm Re}$-$ε_{\rm e}$ distribution at $z<0.1$ reproduces its observational counterpart from the ATLAS$^{\rm 3D}$/SAURON projects. We predict therefore how the observed $λ_{\rm Re}$-$ε_{\rm e}$ distribution of a group evolves according to these ensemble tidal interactions. : 8 pages, 2 tables, 6 figures, accepted for publication in MNRAS |
format |
Text |
author |
Yozin, C Bekki, K |
author_facet |
Yozin, C Bekki, K |
author_sort |
Yozin, C |
title |
The global warming of group satellite galaxies |
title_short |
The global warming of group satellite galaxies |
title_full |
The global warming of group satellite galaxies |
title_fullStr |
The global warming of group satellite galaxies |
title_full_unstemmed |
The global warming of group satellite galaxies |
title_sort |
global warming of group satellite galaxies |
publisher |
arXiv |
publishDate |
2016 |
url |
https://dx.doi.org/10.48550/arxiv.1604.05807 https://arxiv.org/abs/1604.05807 |
genre |
sami |
genre_facet |
sami |
op_relation |
https://dx.doi.org/10.1093/mnras/stw960 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1604.05807 https://doi.org/10.1093/mnras/stw960 |
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