Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts
International audience State-of-the-art integral field surveys like ATLAS 3D , SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical Magneticum Pathfinder...
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ftinsu:oai:HAL:insu-03711204v1 2023-11-12T04:25:46+01:00 Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts Schulze, Felix Remus, Rhea-Silvia Dolag, Klaus Burkert, Andreas Emsellem, Eric van de Ven, Glenn Centre de Recherche Astrophysique de Lyon (CRAL) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2018 https://insu.hal.science/insu-03711204 https://insu.hal.science/insu-03711204/document https://insu.hal.science/insu-03711204/file/sty2090.pdf https://doi.org/10.1093/mnras/sty2090 en eng HAL CCSD Oxford University Press (OUP): Policy P - Oxford Open Option A info:eu-repo/semantics/altIdentifier/arxiv/1802.01583 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2090 insu-03711204 https://insu.hal.science/insu-03711204 https://insu.hal.science/insu-03711204/document https://insu.hal.science/insu-03711204/file/sty2090.pdf ARXIV: 1802.01583 BIBCODE: 2018MNRAS.480.4636S doi:10.1093/mnras/sty2090 info:eu-repo/semantics/OpenAccess ISSN: 0035-8711 EISSN: 1365-2966 Monthly Notices of the Royal Astronomical Society https://insu.hal.science/insu-03711204 Monthly Notices of the Royal Astronomical Society, 2018, 480, pp.4636-4658. ⟨10.1093/mnras/sty2090⟩ methods: numerical galaxies: evolution galaxies: formation galaxies: kinematics and dynamics dark matter Astrophysics - Astrophysics of Galaxies [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2018 ftinsu https://doi.org/10.1093/mnras/sty2090 2023-10-18T16:25:25Z International audience State-of-the-art integral field surveys like ATLAS 3D , SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical Magneticum Pathfinder simulations, we investigate the paradigm of fast- and slow-rotating ETGs in a fully cosmological context. We show that the ETGs within the Magneticum simulation are in remarkable agreement with the observations, revealing fast and slow rotators quantified by the angular momentum proxy λ R and the flattening ɛ with the observed prevalence. Taking full advantage of the three-dimensional data, we demonstrate that the dichotomy between fast- and slow-rotating galaxies gets enhanced, showing an upper and lower population separated by an underpopulated region in the edge-on λ _{R_{1/2}}-ɛ plane. We show that the global anisotropy parameter inferred from the λ _{R_{1/2}}-ɛ edge-on view is a very good predictor of the true anisotropy of the system. This drives a physically based argument for the location of fast rotators in the observed plane. Following the evolution of the λ _{R_{1/2}}-ɛ plane through cosmic time, we find that, while the upper population is already in place at z = 2, the lower population gets statistically significant below z = 1 with a gradual increase. At least 50{{ per cent}} of the galaxies transition from fast to slow rotators on a short time scale, in most cases associated to a significant merger event. Furthermore, we connect the M * -j * plane, quantified by the b-value, with the λ _{R_{1/2}}-ɛ plane, revealing a strong correlation between the position of a galaxy in the λ _{R_{1/2}}-ɛ plane and the b-value. Going one step further, we classify our sample based on features in their velocity map, finding all five common kinematic groups, also including the recently observed group of prolate rotators, populating distinct regions in the λ _{R_{1/2}}-b plane. Article in Journal/Newspaper sami Institut national des sciences de l'Univers: HAL-INSU Monthly Notices of the Royal Astronomical Society 480 4 4636 4658 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
methods: numerical galaxies: evolution galaxies: formation galaxies: kinematics and dynamics dark matter Astrophysics - Astrophysics of Galaxies [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] |
spellingShingle |
methods: numerical galaxies: evolution galaxies: formation galaxies: kinematics and dynamics dark matter Astrophysics - Astrophysics of Galaxies [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] Schulze, Felix Remus, Rhea-Silvia Dolag, Klaus Burkert, Andreas Emsellem, Eric van de Ven, Glenn Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
topic_facet |
methods: numerical galaxies: evolution galaxies: formation galaxies: kinematics and dynamics dark matter Astrophysics - Astrophysics of Galaxies [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] |
description |
International audience State-of-the-art integral field surveys like ATLAS 3D , SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical Magneticum Pathfinder simulations, we investigate the paradigm of fast- and slow-rotating ETGs in a fully cosmological context. We show that the ETGs within the Magneticum simulation are in remarkable agreement with the observations, revealing fast and slow rotators quantified by the angular momentum proxy λ R and the flattening ɛ with the observed prevalence. Taking full advantage of the three-dimensional data, we demonstrate that the dichotomy between fast- and slow-rotating galaxies gets enhanced, showing an upper and lower population separated by an underpopulated region in the edge-on λ _{R_{1/2}}-ɛ plane. We show that the global anisotropy parameter inferred from the λ _{R_{1/2}}-ɛ edge-on view is a very good predictor of the true anisotropy of the system. This drives a physically based argument for the location of fast rotators in the observed plane. Following the evolution of the λ _{R_{1/2}}-ɛ plane through cosmic time, we find that, while the upper population is already in place at z = 2, the lower population gets statistically significant below z = 1 with a gradual increase. At least 50{{ per cent}} of the galaxies transition from fast to slow rotators on a short time scale, in most cases associated to a significant merger event. Furthermore, we connect the M * -j * plane, quantified by the b-value, with the λ _{R_{1/2}}-ɛ plane, revealing a strong correlation between the position of a galaxy in the λ _{R_{1/2}}-ɛ plane and the b-value. Going one step further, we classify our sample based on features in their velocity map, finding all five common kinematic groups, also including the recently observed group of prolate rotators, populating distinct regions in the λ _{R_{1/2}}-b plane. |
author2 |
Centre de Recherche Astrophysique de Lyon (CRAL) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Schulze, Felix Remus, Rhea-Silvia Dolag, Klaus Burkert, Andreas Emsellem, Eric van de Ven, Glenn |
author_facet |
Schulze, Felix Remus, Rhea-Silvia Dolag, Klaus Burkert, Andreas Emsellem, Eric van de Ven, Glenn |
author_sort |
Schulze, Felix |
title |
Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
title_short |
Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
title_full |
Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
title_fullStr |
Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
title_full_unstemmed |
Kinematics of simulated galaxies - I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts |
title_sort |
kinematics of simulated galaxies - i. connecting dynamical and morphological properties of early-type galaxies at different redshifts |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://insu.hal.science/insu-03711204 https://insu.hal.science/insu-03711204/document https://insu.hal.science/insu-03711204/file/sty2090.pdf https://doi.org/10.1093/mnras/sty2090 |
genre |
sami |
genre_facet |
sami |
op_source |
ISSN: 0035-8711 EISSN: 1365-2966 Monthly Notices of the Royal Astronomical Society https://insu.hal.science/insu-03711204 Monthly Notices of the Royal Astronomical Society, 2018, 480, pp.4636-4658. ⟨10.1093/mnras/sty2090⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1802.01583 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2090 insu-03711204 https://insu.hal.science/insu-03711204 https://insu.hal.science/insu-03711204/document https://insu.hal.science/insu-03711204/file/sty2090.pdf ARXIV: 1802.01583 BIBCODE: 2018MNRAS.480.4636S doi:10.1093/mnras/sty2090 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/mnras/sty2090 |
container_title |
Monthly Notices of the Royal Astronomical Society |
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480 |
container_issue |
4 |
container_start_page |
4636 |
op_container_end_page |
4658 |
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1782339953577951232 |