The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge
We study the alignments of galaxy spin axes with respect to cosmic web filaments as a function of various properties of the galaxies and their constituent bulges and discs. We exploit the SAMI Galaxy Survey to identify 3D spin axes from spatially resolved stellar kinematics and to decompose the gala...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2022
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Online Access: | https://researchers.mq.edu.au/en/publications/ff0a0021-55e0-4b21-8273-4ba4ed51900b https://doi.org/10.1093/mnras/stac2405 http://www.scopus.com/inward/record.url?scp=85145250841&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE170100013 http://purl.org/au-research/grants/arc/FF0776384 http://purl.org/au-research/grants/arc/LE130100198 http://purl.org/au-research/grants/arc/CE110001020 http://purl.org/au-research/grants/arc/FT180100231 http://purl.org/au-research/grants/arc/DE200100461 |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/ff0a0021-55e0-4b21-8273-4ba4ed51900b 2024-06-23T07:56:32+00:00 The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge Barsanti, Stefania Colless, Matthew Welker, Charlotte Oh, Sree Casura, Sarah Bryant, Julia J. Croom, Scott M. D'Eugenio, Francesco Lawrence, Jon S. Richards, Samuel N. van de Sande, Jesse 2022-11 https://researchers.mq.edu.au/en/publications/ff0a0021-55e0-4b21-8273-4ba4ed51900b https://doi.org/10.1093/mnras/stac2405 http://www.scopus.com/inward/record.url?scp=85145250841&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE170100013 http://purl.org/au-research/grants/arc/FF0776384 http://purl.org/au-research/grants/arc/LE130100198 http://purl.org/au-research/grants/arc/CE110001020 http://purl.org/au-research/grants/arc/FT180100231 http://purl.org/au-research/grants/arc/DE200100461 eng eng info:eu-repo/semantics/closedAccess Barsanti , S , Colless , M , Welker , C , Oh , S , Casura , S , Bryant , J J , Croom , S M , D'Eugenio , F , Lawrence , J S , Richards , S N & van de Sande , J 2022 , ' The SAMI Galaxy Survey : flipping of the spin-filament alignment correlates most strongly with growth of the bulge ' , Monthly Notices of the Royal Astronomical Society , vol. 516 , no. 3 , pp. 3569-3591 . https://doi.org/10.1093/mnras/stac2405 galaxies: formation e volution galaxies: kinematics and dynamics galaxies: structure fundamental parameters cosmology: large-scale structure of Universe article 2022 ftmacquarieunicr https://doi.org/10.1093/mnras/stac2405 2024-06-05T23:47:52Z We study the alignments of galaxy spin axes with respect to cosmic web filaments as a function of various properties of the galaxies and their constituent bulges and discs. We exploit the SAMI Galaxy Survey to identify 3D spin axes from spatially resolved stellar kinematics and to decompose the galaxy into the kinematic bulge and disc components. The GAMA survey is used to reconstruct the cosmic filaments. The mass of the bulge, defined as the product of stellar mass and bulge-to-total flux ratio M bulge = M * × (B/T), is the primary parameter of correlation with spin-filament alignments: galaxies with lower bulge masses tend to have their spins parallel to the closest filament, while galaxies with higher bulge masses are more perpendicularly aligned. M * and B/T separately show correlations, but they do not fully unravel spin-filament alignments. Other galaxy properties, such as visual morphology, stellar age, star formation activity, kinematic parameters, and local environment, are secondary tracers. Focussing on S0 galaxies, we find preferentially perpendicular alignments, with the signal dominated by high-mass S0 galaxies. Studying bulge and disc spin-filament alignments separately reveals additional information about the formation pathways of the corresponding galaxies: bulges tend to have more perpendicular alignments, while discs show different tendencies according to their kinematic features and the mass of the associated bulge. The observed correlation between the flipping of spin-filament alignments and the growth of the bulge can be explained by mergers, which drive both alignment flips and bulge formation. Article in Journal/Newspaper sami Macquarie University Research Portal Monthly Notices of the Royal Astronomical Society 516 3 3569 3591 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
galaxies: formation e volution galaxies: kinematics and dynamics galaxies: structure fundamental parameters cosmology: large-scale structure of Universe |
spellingShingle |
galaxies: formation e volution galaxies: kinematics and dynamics galaxies: structure fundamental parameters cosmology: large-scale structure of Universe Barsanti, Stefania Colless, Matthew Welker, Charlotte Oh, Sree Casura, Sarah Bryant, Julia J. Croom, Scott M. D'Eugenio, Francesco Lawrence, Jon S. Richards, Samuel N. van de Sande, Jesse The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
topic_facet |
galaxies: formation e volution galaxies: kinematics and dynamics galaxies: structure fundamental parameters cosmology: large-scale structure of Universe |
description |
We study the alignments of galaxy spin axes with respect to cosmic web filaments as a function of various properties of the galaxies and their constituent bulges and discs. We exploit the SAMI Galaxy Survey to identify 3D spin axes from spatially resolved stellar kinematics and to decompose the galaxy into the kinematic bulge and disc components. The GAMA survey is used to reconstruct the cosmic filaments. The mass of the bulge, defined as the product of stellar mass and bulge-to-total flux ratio M bulge = M * × (B/T), is the primary parameter of correlation with spin-filament alignments: galaxies with lower bulge masses tend to have their spins parallel to the closest filament, while galaxies with higher bulge masses are more perpendicularly aligned. M * and B/T separately show correlations, but they do not fully unravel spin-filament alignments. Other galaxy properties, such as visual morphology, stellar age, star formation activity, kinematic parameters, and local environment, are secondary tracers. Focussing on S0 galaxies, we find preferentially perpendicular alignments, with the signal dominated by high-mass S0 galaxies. Studying bulge and disc spin-filament alignments separately reveals additional information about the formation pathways of the corresponding galaxies: bulges tend to have more perpendicular alignments, while discs show different tendencies according to their kinematic features and the mass of the associated bulge. The observed correlation between the flipping of spin-filament alignments and the growth of the bulge can be explained by mergers, which drive both alignment flips and bulge formation. |
format |
Article in Journal/Newspaper |
author |
Barsanti, Stefania Colless, Matthew Welker, Charlotte Oh, Sree Casura, Sarah Bryant, Julia J. Croom, Scott M. D'Eugenio, Francesco Lawrence, Jon S. Richards, Samuel N. van de Sande, Jesse |
author_facet |
Barsanti, Stefania Colless, Matthew Welker, Charlotte Oh, Sree Casura, Sarah Bryant, Julia J. Croom, Scott M. D'Eugenio, Francesco Lawrence, Jon S. Richards, Samuel N. van de Sande, Jesse |
author_sort |
Barsanti, Stefania |
title |
The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
title_short |
The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
title_full |
The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
title_fullStr |
The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
title_full_unstemmed |
The SAMI Galaxy Survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
title_sort |
sami galaxy survey:flipping of the spin-filament alignment correlates most strongly with growth of the bulge |
publishDate |
2022 |
url |
https://researchers.mq.edu.au/en/publications/ff0a0021-55e0-4b21-8273-4ba4ed51900b https://doi.org/10.1093/mnras/stac2405 http://www.scopus.com/inward/record.url?scp=85145250841&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE170100013 http://purl.org/au-research/grants/arc/FF0776384 http://purl.org/au-research/grants/arc/LE130100198 http://purl.org/au-research/grants/arc/CE110001020 http://purl.org/au-research/grants/arc/FT180100231 http://purl.org/au-research/grants/arc/DE200100461 |
genre |
sami |
genre_facet |
sami |
op_source |
Barsanti , S , Colless , M , Welker , C , Oh , S , Casura , S , Bryant , J J , Croom , S M , D'Eugenio , F , Lawrence , J S , Richards , S N & van de Sande , J 2022 , ' The SAMI Galaxy Survey : flipping of the spin-filament alignment correlates most strongly with growth of the bulge ' , Monthly Notices of the Royal Astronomical Society , vol. 516 , no. 3 , pp. 3569-3591 . https://doi.org/10.1093/mnras/stac2405 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1093/mnras/stac2405 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
516 |
container_issue |
3 |
container_start_page |
3569 |
op_container_end_page |
3591 |
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1802649685267054592 |