The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399
We present the SAMI Pilot Survey, consisting of integral field spectroscopy of 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell 2399. The galaxies were selected by absolute magnitude to have M r < -20.25 mag. The survey, using the Sydney-AAO Multi-object Integral field spe...
Published in: | Monthly Notices of the Royal Astronomical Society |
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ftmonashunicris:oai:monash.edu:publications/42db48b5-a596-4241-b6b1-fd0083651a9e 2024-09-15T18:33:18+00:00 The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 Fogarty, Lisa M R Scott, N. Owers, Matt S. Croom, Scott Martin Bekki, K Houghton, Ryan C W van de Sande, J. D'Eugenio, F. Cecil, Gerald N Colless, Matthew Malcolm Bland-Hawthorn, Joss Brough, Sarah Cortese, Luca Davies, R. L. Jones, D. H. Pracy, Michael B Allen, J. T. Bryant, J. J. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S Lawrence, J. S. Lorente, N. P.F. Richards, S. Sharp, Robert G 2015 application/pdf https://research.monash.edu/en/publications/42db48b5-a596-4241-b6b1-fd0083651a9e https://doi.org/10.1093/mnras/stv2060 https://researchmgt.monash.edu/ws/files/213509503/51794652.pdf http://www.scopus.com/inward/record.url?scp=84975686855&partnerID=8YFLogxK eng eng https://research.monash.edu/en/publications/42db48b5-a596-4241-b6b1-fd0083651a9e info:eu-repo/semantics/openAccess Fogarty , L M R , Scott , N , Owers , M S , Croom , S M , Bekki , K , Houghton , R C W , van de Sande , J , D'Eugenio , F , Cecil , G N , Colless , M M , Bland-Hawthorn , J , Brough , S , Cortese , L , Davies , R L , Jones , D H , Pracy , M B , Allen , J T , Bryant , J J , Goodwin , M , Green , A W , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Richards , S & Sharp , R G 2015 , ' The SAMI Pilot Survey : stellar kinematics of galaxies in Abell 85, 168 and 2399 ' , Monthly Notices of the Royal Astronomical Society , vol. 454 , no. 2 , pp. 2050-2066 . https://doi.org/10.1093/mnras/stv2060 Galaxies: kinematics and dynamics Techniques: imaging spectroscopy article 2015 ftmonashunicris https://doi.org/10.1093/mnras/stv2060 2024-08-21T23:55:40Z We present the SAMI Pilot Survey, consisting of integral field spectroscopy of 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell 2399. The galaxies were selected by absolute magnitude to have M r < -20.25 mag. The survey, using the Sydney-AAO Multi-object Integral field spectrograph (SAMI), comprises observations of galaxies of all morphological types with 75 per cent of the sample being early-type galaxies (ETGs) and 25 per cent being late-type galaxies (LTGs). Stellar velocity and velocity dispersion maps are derived for all 106 galaxies in the sample. The λ R parameter, a proxy for the specific stellar angular momentum, is calculated for each galaxy in the sample. We find a trend between λ R and galaxy concentration such that LTGs are less concentrated higher angular momentum systems, with the fast-rotating ETGs (FRs) more concentrated and lower in angular momentum. This suggests that some dynamical processes are involved in transforming LTGs to FRs, though a significant overlap between the λ R distributions of these classes of galaxies implies that this is just one piece of a more complicated picture. We measure the kinematic misalignment angle, ψ, for the ETGs in the sample, to probe the intrinsic shapes of the galaxies. We find the majority of FRs (83 per cent) to be aligned, consistent with them being oblate spheroids (i.e. discs). The slow rotating ETGs (SRs), on the other hand, are significantly more likely to show kinematic misalignment (only 38 per cent are aligned). This confirms previous results that SRs are likely to be mildly triaxial systems. Article in Journal/Newspaper sami Monash University Research Portal Monthly Notices of the Royal Astronomical Society 454 2 2050 2066 |
institution |
Open Polar |
collection |
Monash University Research Portal |
op_collection_id |
ftmonashunicris |
language |
English |
topic |
Galaxies: kinematics and dynamics Techniques: imaging spectroscopy |
spellingShingle |
Galaxies: kinematics and dynamics Techniques: imaging spectroscopy Fogarty, Lisa M R Scott, N. Owers, Matt S. Croom, Scott Martin Bekki, K Houghton, Ryan C W van de Sande, J. D'Eugenio, F. Cecil, Gerald N Colless, Matthew Malcolm Bland-Hawthorn, Joss Brough, Sarah Cortese, Luca Davies, R. L. Jones, D. H. Pracy, Michael B Allen, J. T. Bryant, J. J. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S Lawrence, J. S. Lorente, N. P.F. Richards, S. Sharp, Robert G The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
topic_facet |
Galaxies: kinematics and dynamics Techniques: imaging spectroscopy |
description |
We present the SAMI Pilot Survey, consisting of integral field spectroscopy of 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell 2399. The galaxies were selected by absolute magnitude to have M r < -20.25 mag. The survey, using the Sydney-AAO Multi-object Integral field spectrograph (SAMI), comprises observations of galaxies of all morphological types with 75 per cent of the sample being early-type galaxies (ETGs) and 25 per cent being late-type galaxies (LTGs). Stellar velocity and velocity dispersion maps are derived for all 106 galaxies in the sample. The λ R parameter, a proxy for the specific stellar angular momentum, is calculated for each galaxy in the sample. We find a trend between λ R and galaxy concentration such that LTGs are less concentrated higher angular momentum systems, with the fast-rotating ETGs (FRs) more concentrated and lower in angular momentum. This suggests that some dynamical processes are involved in transforming LTGs to FRs, though a significant overlap between the λ R distributions of these classes of galaxies implies that this is just one piece of a more complicated picture. We measure the kinematic misalignment angle, ψ, for the ETGs in the sample, to probe the intrinsic shapes of the galaxies. We find the majority of FRs (83 per cent) to be aligned, consistent with them being oblate spheroids (i.e. discs). The slow rotating ETGs (SRs), on the other hand, are significantly more likely to show kinematic misalignment (only 38 per cent are aligned). This confirms previous results that SRs are likely to be mildly triaxial systems. |
format |
Article in Journal/Newspaper |
author |
Fogarty, Lisa M R Scott, N. Owers, Matt S. Croom, Scott Martin Bekki, K Houghton, Ryan C W van de Sande, J. D'Eugenio, F. Cecil, Gerald N Colless, Matthew Malcolm Bland-Hawthorn, Joss Brough, Sarah Cortese, Luca Davies, R. L. Jones, D. H. Pracy, Michael B Allen, J. T. Bryant, J. J. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S Lawrence, J. S. Lorente, N. P.F. Richards, S. Sharp, Robert G |
author_facet |
Fogarty, Lisa M R Scott, N. Owers, Matt S. Croom, Scott Martin Bekki, K Houghton, Ryan C W van de Sande, J. D'Eugenio, F. Cecil, Gerald N Colless, Matthew Malcolm Bland-Hawthorn, Joss Brough, Sarah Cortese, Luca Davies, R. L. Jones, D. H. Pracy, Michael B Allen, J. T. Bryant, J. J. Goodwin, M. Green, A. W. Konstantopoulos, Iraklis S Lawrence, J. S. Lorente, N. P.F. Richards, S. Sharp, Robert G |
author_sort |
Fogarty, Lisa M R |
title |
The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
title_short |
The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
title_full |
The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
title_fullStr |
The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
title_full_unstemmed |
The SAMI Pilot Survey:stellar kinematics of galaxies in Abell 85, 168 and 2399 |
title_sort |
sami pilot survey:stellar kinematics of galaxies in abell 85, 168 and 2399 |
publishDate |
2015 |
url |
https://research.monash.edu/en/publications/42db48b5-a596-4241-b6b1-fd0083651a9e https://doi.org/10.1093/mnras/stv2060 https://researchmgt.monash.edu/ws/files/213509503/51794652.pdf http://www.scopus.com/inward/record.url?scp=84975686855&partnerID=8YFLogxK |
genre |
sami |
genre_facet |
sami |
op_source |
Fogarty , L M R , Scott , N , Owers , M S , Croom , S M , Bekki , K , Houghton , R C W , van de Sande , J , D'Eugenio , F , Cecil , G N , Colless , M M , Bland-Hawthorn , J , Brough , S , Cortese , L , Davies , R L , Jones , D H , Pracy , M B , Allen , J T , Bryant , J J , Goodwin , M , Green , A W , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Richards , S & Sharp , R G 2015 , ' The SAMI Pilot Survey : stellar kinematics of galaxies in Abell 85, 168 and 2399 ' , Monthly Notices of the Royal Astronomical Society , vol. 454 , no. 2 , pp. 2050-2066 . https://doi.org/10.1093/mnras/stv2060 |
op_relation |
https://research.monash.edu/en/publications/42db48b5-a596-4241-b6b1-fd0083651a9e |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stv2060 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
454 |
container_issue |
2 |
container_start_page |
2050 |
op_container_end_page |
2066 |
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1810475007323668480 |