The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments
We investigate the stellar populations of passive spiral galaxies as a function of mass and environment, using integral field spectroscopy data from the Sydney-AAO Multi-object Integral field spectrograph Galaxy Survey. Our sample consists of 52 cluster passive spirals and 18 group/field passive spi...
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American Astronomical Society
2021
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Online Access: | http://hdl.handle.net/1959.3/461931 https://doi.org/10.3847/1538-4357/abc880 |
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ftswinburne:tle:7638b5db-bdac-48ac-9584-7a9bbefe106e:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T18:13:11+02:00 The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments Pak, Mina Oh, Sree Lee, Joon Hyeop Scott, Nicholas Smith, Rory van de Sande, Jesse Croom, Scott M. D’Eugenio, Francesco Bekki, Kenji Brough, Sarah Foster, Caroline Barone, Tania M. Kraljic, Katarina Jeong, Hyunjin Bland-Hawthorn, Joss Bryant, Julia J. Goodwin, Michael Lawrence, Jon Owers, Matt S. Richards, Samuel N. Swinburne University of Technology 2021 http://hdl.handle.net/1959.3/461931 https://doi.org/10.3847/1538-4357/abc880 unknown American Astronomical Society http://hdl.handle.net/1959.3/461931 https://doi.org/10.3847/1538-4357/abc880 Copyright © 2021 The Astrophysical Journal, Vol. 906, no. 1 (Jan 2021), 43 Journal article 2021 ftswinburne https://doi.org/10.3847/1538-4357/abc880 2021-07-26T22:26:28Z We investigate the stellar populations of passive spiral galaxies as a function of mass and environment, using integral field spectroscopy data from the Sydney-AAO Multi-object Integral field spectrograph Galaxy Survey. Our sample consists of 52 cluster passive spirals and 18 group/field passive spirals, as well as a set of S0s used as a control sample. The age and [Z/H] estimated by measuring Lick absorption line strength indices both at the center and within 1Re do not show a significant difference between the cluster and the field/group passive spirals. However, the field/group passive spirals with log(Må/Me)∈10.5 show decreasing [α/Fe] along with stellar mass, which is ∼0.1 dex smaller than that of the cluster passive spirals. We also compare the stellar populations of passive spirals with S0s. In the clusters, we find that passive spirals show slightly younger age and lower [α/Fe] than the S0s over the whole mass range. In the field/group, stellar populations show a similar trend between passive spirals and S0s. In particular, [α/Fe] of the field/group S0s tend to be flattening with increasing mass above log(Må/Me)∈10.5, similar to the field/group passive spirals. We relate the age and [α/Fe] of passive spirals to their mean infall time in phase space; we find a positive correlation, in agreement with the prediction of numerical simulations. We discuss the environmental processes that can explain the observed trends. The results lead us to conclude that the formation of the passive spirals and their transformation into S0s may significantly depend on their environments. Article in Journal/Newspaper sami Swinburne University of Technology: Swinburne Research Bank The Astrophysical Journal 906 1 43 |
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Swinburne University of Technology: Swinburne Research Bank |
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ftswinburne |
language |
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description |
We investigate the stellar populations of passive spiral galaxies as a function of mass and environment, using integral field spectroscopy data from the Sydney-AAO Multi-object Integral field spectrograph Galaxy Survey. Our sample consists of 52 cluster passive spirals and 18 group/field passive spirals, as well as a set of S0s used as a control sample. The age and [Z/H] estimated by measuring Lick absorption line strength indices both at the center and within 1Re do not show a significant difference between the cluster and the field/group passive spirals. However, the field/group passive spirals with log(Må/Me)∈10.5 show decreasing [α/Fe] along with stellar mass, which is ∼0.1 dex smaller than that of the cluster passive spirals. We also compare the stellar populations of passive spirals with S0s. In the clusters, we find that passive spirals show slightly younger age and lower [α/Fe] than the S0s over the whole mass range. In the field/group, stellar populations show a similar trend between passive spirals and S0s. In particular, [α/Fe] of the field/group S0s tend to be flattening with increasing mass above log(Må/Me)∈10.5, similar to the field/group passive spirals. We relate the age and [α/Fe] of passive spirals to their mean infall time in phase space; we find a positive correlation, in agreement with the prediction of numerical simulations. We discuss the environmental processes that can explain the observed trends. The results lead us to conclude that the formation of the passive spirals and their transformation into S0s may significantly depend on their environments. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Pak, Mina Oh, Sree Lee, Joon Hyeop Scott, Nicholas Smith, Rory van de Sande, Jesse Croom, Scott M. D’Eugenio, Francesco Bekki, Kenji Brough, Sarah Foster, Caroline Barone, Tania M. Kraljic, Katarina Jeong, Hyunjin Bland-Hawthorn, Joss Bryant, Julia J. Goodwin, Michael Lawrence, Jon Owers, Matt S. Richards, Samuel N. |
spellingShingle |
Pak, Mina Oh, Sree Lee, Joon Hyeop Scott, Nicholas Smith, Rory van de Sande, Jesse Croom, Scott M. D’Eugenio, Francesco Bekki, Kenji Brough, Sarah Foster, Caroline Barone, Tania M. Kraljic, Katarina Jeong, Hyunjin Bland-Hawthorn, Joss Bryant, Julia J. Goodwin, Michael Lawrence, Jon Owers, Matt S. Richards, Samuel N. The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
author_facet |
Pak, Mina Oh, Sree Lee, Joon Hyeop Scott, Nicholas Smith, Rory van de Sande, Jesse Croom, Scott M. D’Eugenio, Francesco Bekki, Kenji Brough, Sarah Foster, Caroline Barone, Tania M. Kraljic, Katarina Jeong, Hyunjin Bland-Hawthorn, Joss Bryant, Julia J. Goodwin, Michael Lawrence, Jon Owers, Matt S. Richards, Samuel N. |
author_sort |
Pak, Mina |
title |
The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
title_short |
The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
title_full |
The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
title_fullStr |
The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
title_full_unstemmed |
The SAMI Galaxy Survey: Stellar Populations of Passive Spiral Galaxies in Different Environments |
title_sort |
sami galaxy survey: stellar populations of passive spiral galaxies in different environments |
publisher |
American Astronomical Society |
publishDate |
2021 |
url |
http://hdl.handle.net/1959.3/461931 https://doi.org/10.3847/1538-4357/abc880 |
genre |
sami |
genre_facet |
sami |
op_source |
The Astrophysical Journal, Vol. 906, no. 1 (Jan 2021), 43 |
op_relation |
http://hdl.handle.net/1959.3/461931 https://doi.org/10.3847/1538-4357/abc880 |
op_rights |
Copyright © 2021 |
op_doi |
https://doi.org/10.3847/1538-4357/abc880 |
container_title |
The Astrophysical Journal |
container_volume |
906 |
container_issue |
1 |
container_start_page |
43 |
_version_ |
1766185680564649984 |