The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies
We use data from the Sydney-AAO Multi-Object Integral Field Spectrograph Galaxy Survey and the Galaxy And Mass Assembly (GAMA) survey to investigate the spatially resolved signatures of the environmental quenching of star formation in galaxies. Using dust-corrected measurements of the distribution o...
Published in: | Monthly Notices of the Royal Astronomical Society |
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2017
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-sami-galaxy-survey(8b5a04b8-12ae-498a-9e3e-7298816b7cc0).html https://doi.org/10.1093/mnras/stw2289 https://research-repository.st-andrews.ac.uk/bitstream/10023/12554/1/Schaefer_2016_SAMI_MNRAS_121.pdf http://arxiv.org/abs/1609.02635v1 |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/8b5a04b8-12ae-498a-9e3e-7298816b7cc0 2023-05-15T18:13:24+02:00 The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies Schaefer, A. L. Croom, S. M. Allen, J. T. Brough, S. Medling, A. M. Ho, I. -T. Scott, N. Richards, S. N. Pracy, M. B. Gunawardhana, M. L. P. Norberg, P. Alpaslan, M. Bauer, A. E. Bekki, K. Bland-Hawthorn, J. Bloom, J. V. Bryant, J. J. Couch, W. J. Driver, S. P. Fogarty, L. M. R. Foster, C. Goldstein, G. Green, A. W. Hopkins, A. M. Konstantopoulos, I. S. Lawrence, J. S. López-Sánchez, A. R. Lorente, N. P. F. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. Sande, J. van de Walcher, C. J. Wong, O. I. 2017-01 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-sami-galaxy-survey(8b5a04b8-12ae-498a-9e3e-7298816b7cc0).html https://doi.org/10.1093/mnras/stw2289 https://research-repository.st-andrews.ac.uk/bitstream/10023/12554/1/Schaefer_2016_SAMI_MNRAS_121.pdf http://arxiv.org/abs/1609.02635v1 eng eng info:eu-repo/semantics/openAccess Schaefer , A L , Croom , S M , Allen , J T , Brough , S , Medling , A M , Ho , I -T , Scott , N , Richards , S N , Pracy , M B , Gunawardhana , M L P , Norberg , P , Alpaslan , M , Bauer , A E , Bekki , K , Bland-Hawthorn , J , Bloom , J V , Bryant , J J , Couch , W J , Driver , S P , Fogarty , L M R , Foster , C , Goldstein , G , Green , A W , Hopkins , A M , Konstantopoulos , I S , Lawrence , J S , López-Sánchez , A R , Lorente , N P F , Owers , M S , Sharp , R , Sweet , S M , Taylor , E N , Sande , J V D , Walcher , C J & Wong , O I 2017 , ' The SAMI Galaxy Survey : spatially resolving the environmental quenching of star formation in GAMA galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 464 , no. 1 , pp. 121-142 . https://doi.org/10.1093/mnras/stw2289 Galaxies: evolution Galaxies: general Galaxies: interactions Galaxies: statistics Galaxies: stellar content Galaxies: structure article 2017 ftunstandrewcris https://doi.org/10.1093/mnras/stw2289 2021-12-26T14:31:37Z We use data from the Sydney-AAO Multi-Object Integral Field Spectrograph Galaxy Survey and the Galaxy And Mass Assembly (GAMA) survey to investigate the spatially resolved signatures of the environmental quenching of star formation in galaxies. Using dust-corrected measurements of the distribution of H α emission, we measure the radial profiles of star formation in a sample of 201 star-forming galaxies covering three orders of magnitude in stellar mass (M∗;10 8.1 –10 10.95 M⊙ ) and in fifth nearest neighbour local environment density (Σ 5 ;10 −1.3 –10 2.1 Mpc −2 ). We show that star formation rate gradients in galaxies are steeper in dense (log 10 (Σ 5 /Mpc 2 ) > 0.5) environments by 0.58 ± 0 . 29 dex r e −1 in galaxies with stellar masses in the range 10 10 < M∗ / M⊙ < 10 11 and that this steepening is accompanied by a reduction in the integrated star formation rate. However, for any given stellar mass or environment density, the star formation morphology of galaxies shows large scatter. We also measure the degree to which the star formation is centrally concentrated using the unitless scale-radius ratio (r 50,Hα /r 50,cont ), which compares the extent of ongoing star formation to previous star formation. With this metric, we find that the fraction of galaxies with centrally concentrated star formation increases with environment density, from ∼ 5 ± 4 per cent in low-density environments (log 10 (Σ 5 /Mpc 2 ) < 0.0) to 30 ± 15 per cent in the highest density environments (log 10 (Σ 5 /Mpc 2 ) > 1.0). These lines of evidence strongly suggest that with increasing local environment density, the star formation in galaxies is suppressed, and that this starts in their outskirts such that quenching occurs in an outside-in fashion in dense environments and is not instantaneous. Article in Journal/Newspaper sami University of St Andrews: Research Portal Monthly Notices of the Royal Astronomical Society 464 1 121 142 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Galaxies: evolution Galaxies: general Galaxies: interactions Galaxies: statistics Galaxies: stellar content Galaxies: structure |
spellingShingle |
Galaxies: evolution Galaxies: general Galaxies: interactions Galaxies: statistics Galaxies: stellar content Galaxies: structure Schaefer, A. L. Croom, S. M. Allen, J. T. Brough, S. Medling, A. M. Ho, I. -T. Scott, N. Richards, S. N. Pracy, M. B. Gunawardhana, M. L. P. Norberg, P. Alpaslan, M. Bauer, A. E. Bekki, K. Bland-Hawthorn, J. Bloom, J. V. Bryant, J. J. Couch, W. J. Driver, S. P. Fogarty, L. M. R. Foster, C. Goldstein, G. Green, A. W. Hopkins, A. M. Konstantopoulos, I. S. Lawrence, J. S. López-Sánchez, A. R. Lorente, N. P. F. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. Sande, J. van de Walcher, C. J. Wong, O. I. The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
topic_facet |
Galaxies: evolution Galaxies: general Galaxies: interactions Galaxies: statistics Galaxies: stellar content Galaxies: structure |
description |
We use data from the Sydney-AAO Multi-Object Integral Field Spectrograph Galaxy Survey and the Galaxy And Mass Assembly (GAMA) survey to investigate the spatially resolved signatures of the environmental quenching of star formation in galaxies. Using dust-corrected measurements of the distribution of H α emission, we measure the radial profiles of star formation in a sample of 201 star-forming galaxies covering three orders of magnitude in stellar mass (M∗;10 8.1 –10 10.95 M⊙ ) and in fifth nearest neighbour local environment density (Σ 5 ;10 −1.3 –10 2.1 Mpc −2 ). We show that star formation rate gradients in galaxies are steeper in dense (log 10 (Σ 5 /Mpc 2 ) > 0.5) environments by 0.58 ± 0 . 29 dex r e −1 in galaxies with stellar masses in the range 10 10 < M∗ / M⊙ < 10 11 and that this steepening is accompanied by a reduction in the integrated star formation rate. However, for any given stellar mass or environment density, the star formation morphology of galaxies shows large scatter. We also measure the degree to which the star formation is centrally concentrated using the unitless scale-radius ratio (r 50,Hα /r 50,cont ), which compares the extent of ongoing star formation to previous star formation. With this metric, we find that the fraction of galaxies with centrally concentrated star formation increases with environment density, from ∼ 5 ± 4 per cent in low-density environments (log 10 (Σ 5 /Mpc 2 ) < 0.0) to 30 ± 15 per cent in the highest density environments (log 10 (Σ 5 /Mpc 2 ) > 1.0). These lines of evidence strongly suggest that with increasing local environment density, the star formation in galaxies is suppressed, and that this starts in their outskirts such that quenching occurs in an outside-in fashion in dense environments and is not instantaneous. |
format |
Article in Journal/Newspaper |
author |
Schaefer, A. L. Croom, S. M. Allen, J. T. Brough, S. Medling, A. M. Ho, I. -T. Scott, N. Richards, S. N. Pracy, M. B. Gunawardhana, M. L. P. Norberg, P. Alpaslan, M. Bauer, A. E. Bekki, K. Bland-Hawthorn, J. Bloom, J. V. Bryant, J. J. Couch, W. J. Driver, S. P. Fogarty, L. M. R. Foster, C. Goldstein, G. Green, A. W. Hopkins, A. M. Konstantopoulos, I. S. Lawrence, J. S. López-Sánchez, A. R. Lorente, N. P. F. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. Sande, J. van de Walcher, C. J. Wong, O. I. |
author_facet |
Schaefer, A. L. Croom, S. M. Allen, J. T. Brough, S. Medling, A. M. Ho, I. -T. Scott, N. Richards, S. N. Pracy, M. B. Gunawardhana, M. L. P. Norberg, P. Alpaslan, M. Bauer, A. E. Bekki, K. Bland-Hawthorn, J. Bloom, J. V. Bryant, J. J. Couch, W. J. Driver, S. P. Fogarty, L. M. R. Foster, C. Goldstein, G. Green, A. W. Hopkins, A. M. Konstantopoulos, I. S. Lawrence, J. S. López-Sánchez, A. R. Lorente, N. P. F. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. Sande, J. van de Walcher, C. J. Wong, O. I. |
author_sort |
Schaefer, A. L. |
title |
The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
title_short |
The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
title_full |
The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
title_fullStr |
The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
title_full_unstemmed |
The SAMI Galaxy Survey:spatially resolving the environmental quenching of star formation in GAMA galaxies |
title_sort |
sami galaxy survey:spatially resolving the environmental quenching of star formation in gama galaxies |
publishDate |
2017 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-sami-galaxy-survey(8b5a04b8-12ae-498a-9e3e-7298816b7cc0).html https://doi.org/10.1093/mnras/stw2289 https://research-repository.st-andrews.ac.uk/bitstream/10023/12554/1/Schaefer_2016_SAMI_MNRAS_121.pdf http://arxiv.org/abs/1609.02635v1 |
genre |
sami |
genre_facet |
sami |
op_source |
Schaefer , A L , Croom , S M , Allen , J T , Brough , S , Medling , A M , Ho , I -T , Scott , N , Richards , S N , Pracy , M B , Gunawardhana , M L P , Norberg , P , Alpaslan , M , Bauer , A E , Bekki , K , Bland-Hawthorn , J , Bloom , J V , Bryant , J J , Couch , W J , Driver , S P , Fogarty , L M R , Foster , C , Goldstein , G , Green , A W , Hopkins , A M , Konstantopoulos , I S , Lawrence , J S , López-Sánchez , A R , Lorente , N P F , Owers , M S , Sharp , R , Sweet , S M , Taylor , E N , Sande , J V D , Walcher , C J & Wong , O I 2017 , ' The SAMI Galaxy Survey : spatially resolving the environmental quenching of star formation in GAMA galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 464 , no. 1 , pp. 121-142 . https://doi.org/10.1093/mnras/stw2289 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stw2289 |
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Monthly Notices of the Royal Astronomical Society |
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464 |
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121 |
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