The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168
We investigate the kinematic alignments of luminous early-type galaxies (M r ≤ −19.5 mag) in A119 and A168 using the kinematic position angles (${{\rm{PA}}}_{{\rm{kin}}}$) from the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) survey data, motivated by the implication of the galaxy spin...
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American Astronomical Society
2019
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:eecd0bf 2023-05-15T18:11:13+02:00 The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 Jeong, Hyunjin Kim, Suk Owers, Matt S. Joo, Seok-Joo Kim, Hak-Sub Lee, Woong Lee, Youngdae Sande, Jesse van de Lee, Jaehyun Yi, Sukyoung K. Croom, Scott M. Bryant, Julia J. Rey, Soo-Chang Brough, Sarah Oh, Sree Scott, Nicholas Tonini, Chiara Medling, Anne M. Sweet, Sarah M. Bland-Hawthorn, Joss Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel N. 2019-04-16 https://espace.library.uq.edu.au/view/UQ:eecd0bf/UQeecd0bf_OA.pdf https://espace.library.uq.edu.au/view/UQ:eecd0bf unknown American Astronomical Society doi:10.3847/1538-4357/ab0d90 issn:1538-4357 issn:0004-637X orcid:0000-0002-1576-2505 Space and Planetary Science Astronomy and Astrophysics Journal Article 2019 ftunivqespace https://doi.org/10.3847/1538-4357/ab0d90 2020-08-06T19:56:53Z We investigate the kinematic alignments of luminous early-type galaxies (M r ≤ −19.5 mag) in A119 and A168 using the kinematic position angles (${{\rm{PA}}}_{{\rm{kin}}}$) from the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) survey data, motivated by the implication of the galaxy spin alignment in a cosmological context. To increase the size of our sample for statistical significance, we also use the photometric position angles (${{\rm{PA}}}_{{\rm{phot}}}$) for galaxies that have not been observed by SAMI, if their ellipticities are higher than 0.15. Our luminous early-type galaxies tend to prefer the specific position angles in both clusters, confirming the results of Kim et al., who recently found the kinematic alignment of early-type galaxies in the Virgo cluster based on the ATLAS 3D integral-field spectroscopic data. This alignment signal is more prominent for galaxies in the projected phase-space regions dominated by infalling populations. Furthermore, the alignment angles are closely related to the directions of the filamentary structures around clusters. The results lead us to conclude that many cluster early-type galaxies are likely to be accreted along filaments while maintaining their spin axes, which are predetermined before cluster infall. Article in Journal/Newspaper sami The University of Queensland: UQ eSpace The Astrophysical Journal 875 1 60 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
unknown |
topic |
Space and Planetary Science Astronomy and Astrophysics |
spellingShingle |
Space and Planetary Science Astronomy and Astrophysics Jeong, Hyunjin Kim, Suk Owers, Matt S. Joo, Seok-Joo Kim, Hak-Sub Lee, Woong Lee, Youngdae Sande, Jesse van de Lee, Jaehyun Yi, Sukyoung K. Croom, Scott M. Bryant, Julia J. Rey, Soo-Chang Brough, Sarah Oh, Sree Scott, Nicholas Tonini, Chiara Medling, Anne M. Sweet, Sarah M. Bland-Hawthorn, Joss Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel N. The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
topic_facet |
Space and Planetary Science Astronomy and Astrophysics |
description |
We investigate the kinematic alignments of luminous early-type galaxies (M r ≤ −19.5 mag) in A119 and A168 using the kinematic position angles (${{\rm{PA}}}_{{\rm{kin}}}$) from the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) survey data, motivated by the implication of the galaxy spin alignment in a cosmological context. To increase the size of our sample for statistical significance, we also use the photometric position angles (${{\rm{PA}}}_{{\rm{phot}}}$) for galaxies that have not been observed by SAMI, if their ellipticities are higher than 0.15. Our luminous early-type galaxies tend to prefer the specific position angles in both clusters, confirming the results of Kim et al., who recently found the kinematic alignment of early-type galaxies in the Virgo cluster based on the ATLAS 3D integral-field spectroscopic data. This alignment signal is more prominent for galaxies in the projected phase-space regions dominated by infalling populations. Furthermore, the alignment angles are closely related to the directions of the filamentary structures around clusters. The results lead us to conclude that many cluster early-type galaxies are likely to be accreted along filaments while maintaining their spin axes, which are predetermined before cluster infall. |
format |
Article in Journal/Newspaper |
author |
Jeong, Hyunjin Kim, Suk Owers, Matt S. Joo, Seok-Joo Kim, Hak-Sub Lee, Woong Lee, Youngdae Sande, Jesse van de Lee, Jaehyun Yi, Sukyoung K. Croom, Scott M. Bryant, Julia J. Rey, Soo-Chang Brough, Sarah Oh, Sree Scott, Nicholas Tonini, Chiara Medling, Anne M. Sweet, Sarah M. Bland-Hawthorn, Joss Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel N. |
author_facet |
Jeong, Hyunjin Kim, Suk Owers, Matt S. Joo, Seok-Joo Kim, Hak-Sub Lee, Woong Lee, Youngdae Sande, Jesse van de Lee, Jaehyun Yi, Sukyoung K. Croom, Scott M. Bryant, Julia J. Rey, Soo-Chang Brough, Sarah Oh, Sree Scott, Nicholas Tonini, Chiara Medling, Anne M. Sweet, Sarah M. Bland-Hawthorn, Joss Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel N. |
author_sort |
Jeong, Hyunjin |
title |
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
title_short |
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
title_full |
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
title_fullStr |
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
title_full_unstemmed |
The SAMI Galaxy Survey: kinematic alignments of early-type galaxies in A119 and A168 |
title_sort |
sami galaxy survey: kinematic alignments of early-type galaxies in a119 and a168 |
publisher |
American Astronomical Society |
publishDate |
2019 |
url |
https://espace.library.uq.edu.au/view/UQ:eecd0bf/UQeecd0bf_OA.pdf https://espace.library.uq.edu.au/view/UQ:eecd0bf |
genre |
sami |
genre_facet |
sami |
op_relation |
doi:10.3847/1538-4357/ab0d90 issn:1538-4357 issn:0004-637X orcid:0000-0002-1576-2505 |
op_doi |
https://doi.org/10.3847/1538-4357/ab0d90 |
container_title |
The Astrophysical Journal |
container_volume |
875 |
container_issue |
1 |
container_start_page |
60 |
_version_ |
1766183906730573824 |