Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups
Associated Persons Adam L. Schaefer (Creator); S. M. Croom (Creator); N. Scott (Creator); Sarah Brough (Creator); James T. Allen (Creator); Joss Bland-Hawthorn (Creator); Jessica V. Bloom (Creator); J. J. Bryant (Creator); Christoph Federrath (Creator); Lisa M R Fogarty (Creator); A. W. Green (Creat...
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The University of Western Australia
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Online Access: | https://researchdata.edu.au/data-the-sami-gama-groups/1712388 https://doi.org/10.1093/mnras/sty3258 |
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ftands:oai:ands.org.au::1712388 2023-11-12T04:25:37+01:00 Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups Brent Groves (Creator) Intl Centre for Radio Astronomy Research (ICRAR) (isManagedBy) Kenji Bekki (Creator) Luca Cortese (Creator) Luke Davies (Creator) https://researchdata.edu.au/data-the-sami-gama-groups/1712388 https://doi.org/10.1093/mnras/sty3258 unknown The University of Western Australia https://researchdata.edu.au/data-the-sami-gama-groups/1712388 85f5fbdb-9e3c-4519-8448-88154ca7b75b doi:10.1093/mnras/sty3258 University of Western Australia galaxies: evolution galaxies: interactions galaxies: star formation galaxies: structure galaxies: groups: general Astrophysics - Astrophysics of Galaxies dataset ftands https://doi.org/10.1093/mnras/sty3258 2023-10-23T22:23:03Z Associated Persons Adam L. Schaefer (Creator); S. M. Croom (Creator); N. Scott (Creator); Sarah Brough (Creator); James T. Allen (Creator); Joss Bland-Hawthorn (Creator); Jessica V. Bloom (Creator); J. J. Bryant (Creator); Christoph Federrath (Creator); Lisa M R Fogarty (Creator); A. W. Green (Creator); Andrew M. Hopkins (Creator); Iraklis S. Konstantopoulos (Creator); Ángel R. López-Sánchez (Creator); Jon S. Lawrence (Creator); Rebecca McElroy (Creator) We explore the radial distribution of star formation in galaxies in the SAMI Galaxy Survey as a function of their Local Group environment. Using a sample of galaxies in groups (with halo masses less than ∼eq 10^{14} M_☉) from the Galaxy And Mass Assembly Survey, we find signatures of environmental quenching in high-mass groups (M_{ G} > 10^{12.5} M_{☉}). The mean integrated specific star formation rate (sSFR) of star-forming galaxies in high-mass groups is lower than for galaxies in low-mass groups or those that are ungrouped, with ∆ log ( sSFR/yr^{-1}) = 0.45 ± 0.07. This difference is seen at all galaxy stellar masses. In high-mass groups, star-forming galaxies more massive than M_{*} ∼ 10^{10} M_{☉} have centrally concentrated star formation. These galaxies also lie below the star formation main sequence, which suggests they may be undergoing outside-in quenching. Lower mass galaxies in high-mass groups do not show evidence of concentrated star formation. In groups less massive than M_{ G} = 10^{12.5} M_{☉}, we do not observe these trends. In this regime, we find a modest correlation between centrally concentrated star formation and an enhancement in the total star formation rate, consistent with triggered star formation in these galaxies. Dataset sami Research Data Australia (Australian National Data Service - ANDS) Bryant ENVELOPE(-60.942,-60.942,-71.236,-71.236) Schaefer ENVELOPE(166.383,166.383,-71.367,-71.367) McElroy ENVELOPE(-63.187,-63.187,-74.152,-74.152) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
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ftands |
language |
unknown |
topic |
galaxies: evolution galaxies: interactions galaxies: star formation galaxies: structure galaxies: groups: general Astrophysics - Astrophysics of Galaxies |
spellingShingle |
galaxies: evolution galaxies: interactions galaxies: star formation galaxies: structure galaxies: groups: general Astrophysics - Astrophysics of Galaxies Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
topic_facet |
galaxies: evolution galaxies: interactions galaxies: star formation galaxies: structure galaxies: groups: general Astrophysics - Astrophysics of Galaxies |
description |
Associated Persons Adam L. Schaefer (Creator); S. M. Croom (Creator); N. Scott (Creator); Sarah Brough (Creator); James T. Allen (Creator); Joss Bland-Hawthorn (Creator); Jessica V. Bloom (Creator); J. J. Bryant (Creator); Christoph Federrath (Creator); Lisa M R Fogarty (Creator); A. W. Green (Creator); Andrew M. Hopkins (Creator); Iraklis S. Konstantopoulos (Creator); Ángel R. López-Sánchez (Creator); Jon S. Lawrence (Creator); Rebecca McElroy (Creator) We explore the radial distribution of star formation in galaxies in the SAMI Galaxy Survey as a function of their Local Group environment. Using a sample of galaxies in groups (with halo masses less than ∼eq 10^{14} M_☉) from the Galaxy And Mass Assembly Survey, we find signatures of environmental quenching in high-mass groups (M_{ G} > 10^{12.5} M_{☉}). The mean integrated specific star formation rate (sSFR) of star-forming galaxies in high-mass groups is lower than for galaxies in low-mass groups or those that are ungrouped, with ∆ log ( sSFR/yr^{-1}) = 0.45 ± 0.07. This difference is seen at all galaxy stellar masses. In high-mass groups, star-forming galaxies more massive than M_{*} ∼ 10^{10} M_{☉} have centrally concentrated star formation. These galaxies also lie below the star formation main sequence, which suggests they may be undergoing outside-in quenching. Lower mass galaxies in high-mass groups do not show evidence of concentrated star formation. In groups less massive than M_{ G} = 10^{12.5} M_{☉}, we do not observe these trends. In this regime, we find a modest correlation between centrally concentrated star formation and an enhancement in the total star formation rate, consistent with triggered star formation in these galaxies. |
author2 |
Brent Groves (Creator) Intl Centre for Radio Astronomy Research (ICRAR) (isManagedBy) Kenji Bekki (Creator) Luca Cortese (Creator) Luke Davies (Creator) |
format |
Dataset |
title |
Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
title_short |
Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
title_full |
Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
title_fullStr |
Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
title_full_unstemmed |
Data from : The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups |
title_sort |
data from : the sami galaxy survey: observing the environmental quenching of star formation in gama groups |
publisher |
The University of Western Australia |
url |
https://researchdata.edu.au/data-the-sami-gama-groups/1712388 https://doi.org/10.1093/mnras/sty3258 |
long_lat |
ENVELOPE(-60.942,-60.942,-71.236,-71.236) ENVELOPE(166.383,166.383,-71.367,-71.367) ENVELOPE(-63.187,-63.187,-74.152,-74.152) |
geographic |
Bryant Schaefer McElroy |
geographic_facet |
Bryant Schaefer McElroy |
genre |
sami |
genre_facet |
sami |
op_source |
University of Western Australia |
op_relation |
https://researchdata.edu.au/data-the-sami-gama-groups/1712388 85f5fbdb-9e3c-4519-8448-88154ca7b75b doi:10.1093/mnras/sty3258 |
op_doi |
https://doi.org/10.1093/mnras/sty3258 |
_version_ |
1782339768958320640 |