Kinematics of galaxy bulges, disks, and gas
We investigate the stellar kinematics of the bulge and disk components in 826 SAMI galaxies. The spatially resolved rotation velocity (V) and velocity dispersion (σ) of bulge and disk components have been simultaneously) of bulge and disk components have been simultaneously estimated using the penal...
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ftdatacite:10.5281/zenodo.4721541 2023-05-15T18:12:14+02:00 Kinematics of galaxy bulges, disks, and gas Oh, Sree Colless, Matthew 2021 https://dx.doi.org/10.5281/zenodo.4721541 https://zenodo.org/record/4721541 unknown Zenodo https://zenodo.org/communities/galspec2021 https://dx.doi.org/10.5281/zenodo.4721542 https://zenodo.org/communities/galspec2021 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Poster article-journal ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.4721541 https://doi.org/10.5281/zenodo.4721542 2021-11-05T12:55:41Z We investigate the stellar kinematics of the bulge and disk components in 826 SAMI galaxies. The spatially resolved rotation velocity (V) and velocity dispersion (σ) of bulge and disk components have been simultaneously) of bulge and disk components have been simultaneously estimated using the penalized pixel fitting (PPXF) method with photometrically defined weights for the two components. The spin parameter λR indicates bulges are pressure-dominated systems and disks are supported by rotation. The two components show Tully-Fisher and Faber-Jackson relations with similar slopes, but different intercepts suggesting that the galaxy stellar mass scales with both V and σ) of bulge and disk components have been simultaneously for both bulge and disk components of all galaxy types. Our findings suggest that the relative contributions of the two components explain, at least to first order, the complex kinematic behaviour of galaxies. Looking further ahead, we compare gas and stellar kinematics and discuss dependence of spatial distribution of gas on galaxy type. Still Image sami DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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description |
We investigate the stellar kinematics of the bulge and disk components in 826 SAMI galaxies. The spatially resolved rotation velocity (V) and velocity dispersion (σ) of bulge and disk components have been simultaneously) of bulge and disk components have been simultaneously estimated using the penalized pixel fitting (PPXF) method with photometrically defined weights for the two components. The spin parameter λR indicates bulges are pressure-dominated systems and disks are supported by rotation. The two components show Tully-Fisher and Faber-Jackson relations with similar slopes, but different intercepts suggesting that the galaxy stellar mass scales with both V and σ) of bulge and disk components have been simultaneously for both bulge and disk components of all galaxy types. Our findings suggest that the relative contributions of the two components explain, at least to first order, the complex kinematic behaviour of galaxies. Looking further ahead, we compare gas and stellar kinematics and discuss dependence of spatial distribution of gas on galaxy type. |
format |
Still Image |
author |
Oh, Sree Colless, Matthew |
spellingShingle |
Oh, Sree Colless, Matthew Kinematics of galaxy bulges, disks, and gas |
author_facet |
Oh, Sree Colless, Matthew |
author_sort |
Oh, Sree |
title |
Kinematics of galaxy bulges, disks, and gas |
title_short |
Kinematics of galaxy bulges, disks, and gas |
title_full |
Kinematics of galaxy bulges, disks, and gas |
title_fullStr |
Kinematics of galaxy bulges, disks, and gas |
title_full_unstemmed |
Kinematics of galaxy bulges, disks, and gas |
title_sort |
kinematics of galaxy bulges, disks, and gas |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://dx.doi.org/10.5281/zenodo.4721541 https://zenodo.org/record/4721541 |
genre |
sami |
genre_facet |
sami |
op_relation |
https://zenodo.org/communities/galspec2021 https://dx.doi.org/10.5281/zenodo.4721542 https://zenodo.org/communities/galspec2021 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.4721541 https://doi.org/10.5281/zenodo.4721542 |
_version_ |
1766184783497396224 |