The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies
We present the first detection of mass dependent galactic spin alignments with local cosmic filaments with over 2 sigma confidence using IFS kinematics. The 3D network of cosmic filaments is reconstructed on Mpc scales across GAMA fields using the cosmic web extractor DisPerSe. We assign field galax...
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ftsorbonneuniv:oai:HAL:hal-02371625v1 2024-09-15T18:33:16+00:00 The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies Welker, C. Bland-Hawthorn, J. van de Sande, J. Lagos, C. Elahi, P. Obreschkow, D. Bryant, J. Pichon, C. Cortese, L. Richards, S.N. Croom, S.M. Goodwin, M. Lawrence, J.S. Sweet, S. Lopez-Sanchez, A. Medling, A. Owers, M.S. Dubois, Y. Devriendt, J. Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 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) 2019-11-20 https://hal.science/hal-02371625 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/1909.12371 hal-02371625 https://hal.science/hal-02371625 ARXIV: 1909.12371 INSPIRE: 1756646 https://hal.science/hal-02371625 2019 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2019 ftsorbonneuniv 2024-07-25T23:48:02Z We present the first detection of mass dependent galactic spin alignments with local cosmic filaments with over 2 sigma confidence using IFS kinematics. The 3D network of cosmic filaments is reconstructed on Mpc scales across GAMA fields using the cosmic web extractor DisPerSe. We assign field galaxies from the SAMI survey to their nearest filament segment in 3D and estimate the degree of alignment between SAMI galaxies kinematic spin axis and their nearest filament in projection. Low-mass galaxies align their spin with their nearest filament while higher mass counterparts are more likely to display an orthogonal orientation. The stellar transition mass from the first trend to the second is bracketed between log stellar masses 10.4 and 10.9, with hints of an increase with filament scale. Consistent signals are found in the HorizonAGN cosmological hydrodynamic simulation. This supports a scenario of early angular momentum build-up in vorticity rich quadrants around filaments at low stellar mass followed by progressive flip of spins orthogonal to the cosmic filaments through mergers at high stellar mass. Conversely, we show that dark-matter only simulations post-processed with a semi-analytic model treatment of galaxy formation struggles to reproduce this alignment signal. This suggests that gas physics is key in enhancing the galaxy-filament alignment. Report sami HAL Sorbonne Université |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
spellingShingle |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Welker, C. Bland-Hawthorn, J. van de Sande, J. Lagos, C. Elahi, P. Obreschkow, D. Bryant, J. Pichon, C. Cortese, L. Richards, S.N. Croom, S.M. Goodwin, M. Lawrence, J.S. Sweet, S. Lopez-Sanchez, A. Medling, A. Owers, M.S. Dubois, Y. Devriendt, J. The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
topic_facet |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
description |
We present the first detection of mass dependent galactic spin alignments with local cosmic filaments with over 2 sigma confidence using IFS kinematics. The 3D network of cosmic filaments is reconstructed on Mpc scales across GAMA fields using the cosmic web extractor DisPerSe. We assign field galaxies from the SAMI survey to their nearest filament segment in 3D and estimate the degree of alignment between SAMI galaxies kinematic spin axis and their nearest filament in projection. Low-mass galaxies align their spin with their nearest filament while higher mass counterparts are more likely to display an orthogonal orientation. The stellar transition mass from the first trend to the second is bracketed between log stellar masses 10.4 and 10.9, with hints of an increase with filament scale. Consistent signals are found in the HorizonAGN cosmological hydrodynamic simulation. This supports a scenario of early angular momentum build-up in vorticity rich quadrants around filaments at low stellar mass followed by progressive flip of spins orthogonal to the cosmic filaments through mergers at high stellar mass. Conversely, we show that dark-matter only simulations post-processed with a semi-analytic model treatment of galaxy formation struggles to reproduce this alignment signal. This suggests that gas physics is key in enhancing the galaxy-filament alignment. |
author2 |
Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 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 |
Report |
author |
Welker, C. Bland-Hawthorn, J. van de Sande, J. Lagos, C. Elahi, P. Obreschkow, D. Bryant, J. Pichon, C. Cortese, L. Richards, S.N. Croom, S.M. Goodwin, M. Lawrence, J.S. Sweet, S. Lopez-Sanchez, A. Medling, A. Owers, M.S. Dubois, Y. Devriendt, J. |
author_facet |
Welker, C. Bland-Hawthorn, J. van de Sande, J. Lagos, C. Elahi, P. Obreschkow, D. Bryant, J. Pichon, C. Cortese, L. Richards, S.N. Croom, S.M. Goodwin, M. Lawrence, J.S. Sweet, S. Lopez-Sanchez, A. Medling, A. Owers, M.S. Dubois, Y. Devriendt, J. |
author_sort |
Welker, C. |
title |
The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
title_short |
The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
title_full |
The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
title_fullStr |
The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
title_full_unstemmed |
The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
title_sort |
sami galaxy survey: first detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02371625 |
genre |
sami |
genre_facet |
sami |
op_source |
https://hal.science/hal-02371625 2019 |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1909.12371 hal-02371625 https://hal.science/hal-02371625 ARXIV: 1909.12371 INSPIRE: 1756646 |
_version_ |
1810474977000947712 |