A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence
ABSTRACT Galaxy internal structure growth has long been accused of inhibiting star formation in disc galaxies. We investigate the potential physical connection between the growth of dispersion-supported stellar structures (e.g. classical bulges) and the position of galaxies on the star-forming main...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Oxford University Press (OUP)
2021
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Online Access: | http://dx.doi.org/10.1093/mnras/stab573 http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stab573/36422513/stab573.pdf https://academic.oup.com/mnras/article-pdf/503/4/4992/37018459/stab573.pdf |
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croxfordunivpr:10.1093/mnras/stab573 2024-10-13T14:10:35+00:00 A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence Fraser-McKelvie, A Cortese, L van de Sande, J Bryant, J J Catinella, B Colless, M Croom, S M Groves, B Medling, A M Scott, N Sweet, S M Bland-Hawthorn, J Goodwin, M Lawrence, J Lorente, N Owers, M S Richards, S N Australian Research Council National Science Foundation 2021 http://dx.doi.org/10.1093/mnras/stab573 http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stab573/36422513/stab573.pdf https://academic.oup.com/mnras/article-pdf/503/4/4992/37018459/stab573.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Monthly Notices of the Royal Astronomical Society volume 503, issue 4, page 4992-5005 ISSN 0035-8711 1365-2966 journal-article 2021 croxfordunivpr https://doi.org/10.1093/mnras/stab573 2024-09-17T04:28:00Z ABSTRACT Galaxy internal structure growth has long been accused of inhibiting star formation in disc galaxies. We investigate the potential physical connection between the growth of dispersion-supported stellar structures (e.g. classical bulges) and the position of galaxies on the star-forming main sequence at z ∼ 0. Combining the might of the SAMI and MaNGA galaxy surveys, we measure the λRe spin parameter for 3289 galaxies over $9.5 \lt \log M_{\star } [\rm {M}_{\odot }] \lt 12$. At all stellar masses, galaxies at the locus of the main sequence possess λRe values indicative of intrinsically flattened discs. However, above $\log M_{\star }[\rm {M}_{\odot }]\sim 10.5$ where the main sequence starts bending, we find tantalizing evidence for an increase in the number of galaxies with dispersion-supported structures, perhaps suggesting a connection between bulges and the bending of the main sequence. Moving above the main sequence, we see no evidence of any change in the typical spin parameter in galaxies once gravitationally interacting systems are excluded from the sample. Similarly, up to 1 dex below the main sequence, λRe remains roughly constant and only at very high stellar masses ($\log M_{\star }[\rm {M}_{\odot }]\gt 11$), do we see a rapid decrease in λRe once galaxies decline in star formation activity. If this trend is confirmed, it would be indicative of different quenching mechanisms acting on high- and low-mass galaxies. The results suggest that whilst a population of galaxies possessing some dispersion-supported structure is already present on the star-forming main sequence, further growth would be required after the galaxy has quenched to match the kinematic properties observed in passive galaxies at z ∼ 0. Article in Journal/Newspaper sami Oxford University Press Monthly Notices of the Royal Astronomical Society 503 4 4992 5005 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
ABSTRACT Galaxy internal structure growth has long been accused of inhibiting star formation in disc galaxies. We investigate the potential physical connection between the growth of dispersion-supported stellar structures (e.g. classical bulges) and the position of galaxies on the star-forming main sequence at z ∼ 0. Combining the might of the SAMI and MaNGA galaxy surveys, we measure the λRe spin parameter for 3289 galaxies over $9.5 \lt \log M_{\star } [\rm {M}_{\odot }] \lt 12$. At all stellar masses, galaxies at the locus of the main sequence possess λRe values indicative of intrinsically flattened discs. However, above $\log M_{\star }[\rm {M}_{\odot }]\sim 10.5$ where the main sequence starts bending, we find tantalizing evidence for an increase in the number of galaxies with dispersion-supported structures, perhaps suggesting a connection between bulges and the bending of the main sequence. Moving above the main sequence, we see no evidence of any change in the typical spin parameter in galaxies once gravitationally interacting systems are excluded from the sample. Similarly, up to 1 dex below the main sequence, λRe remains roughly constant and only at very high stellar masses ($\log M_{\star }[\rm {M}_{\odot }]\gt 11$), do we see a rapid decrease in λRe once galaxies decline in star formation activity. If this trend is confirmed, it would be indicative of different quenching mechanisms acting on high- and low-mass galaxies. The results suggest that whilst a population of galaxies possessing some dispersion-supported structure is already present on the star-forming main sequence, further growth would be required after the galaxy has quenched to match the kinematic properties observed in passive galaxies at z ∼ 0. |
author2 |
Australian Research Council National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Fraser-McKelvie, A Cortese, L van de Sande, J Bryant, J J Catinella, B Colless, M Croom, S M Groves, B Medling, A M Scott, N Sweet, S M Bland-Hawthorn, J Goodwin, M Lawrence, J Lorente, N Owers, M S Richards, S N |
spellingShingle |
Fraser-McKelvie, A Cortese, L van de Sande, J Bryant, J J Catinella, B Colless, M Croom, S M Groves, B Medling, A M Scott, N Sweet, S M Bland-Hawthorn, J Goodwin, M Lawrence, J Lorente, N Owers, M S Richards, S N A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
author_facet |
Fraser-McKelvie, A Cortese, L van de Sande, J Bryant, J J Catinella, B Colless, M Croom, S M Groves, B Medling, A M Scott, N Sweet, S M Bland-Hawthorn, J Goodwin, M Lawrence, J Lorente, N Owers, M S Richards, S N |
author_sort |
Fraser-McKelvie, A |
title |
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
title_short |
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
title_full |
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
title_fullStr |
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
title_full_unstemmed |
A SAMI and MaNGA view on the stellar kinematics of galaxies on the star-forming main sequence |
title_sort |
sami and manga view on the stellar kinematics of galaxies on the star-forming main sequence |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/mnras/stab573 http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stab573/36422513/stab573.pdf https://academic.oup.com/mnras/article-pdf/503/4/4992/37018459/stab573.pdf |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society volume 503, issue 4, page 4992-5005 ISSN 0035-8711 1365-2966 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/mnras/stab573 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
503 |
container_issue |
4 |
container_start_page |
4992 |
op_container_end_page |
5005 |
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1812817909428256768 |