Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ...
We present the first study of spatially integrated higher-order stellar kinematics over cosmic time. We use deep rest-frame optical spectroscopy of quiescent galaxies at redshifts z=0.05, 0.3 and 0.8 from the SAMI, MAGPI and LEGA-C surveys to measure the excess kurtosis $h_4$ of the stellar velocity...
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Online Access: | https://dx.doi.org/10.48550/arxiv.2303.05520 https://arxiv.org/abs/2303.05520 |
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ftdatacite:10.48550/arxiv.2303.05520 2023-05-15T18:11:32+02:00 Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... D'Eugenio, Francesco van der Wel, Arjen Piotrowska, Joanna M. Bezanson, Rachel Taylor, Edward N. van de Sande, Jesse Baker, William M. Bell, Eric F. Bellstedt, Sabine Bland-Hawthorn, Joss Bluck, Asa F. L. Brough, Sarah Bryant, Julia J. Colless, Matthew Cortese, Luca Croom, Scott M. Derkenne, Caro van Dokkum, Pieter Fisher, Deanne Foster, Caroline Gallazzi, Anna de Graaff, Anna Groves, Brent van Houdt, Josha Lagos, Claudia del P. Looser, Tobias J. Maiolino, Roberto Maseda, Michael Mendel, J. Trevor Nersesian, Angelos Pacifici, Camilla Poci, Adriano Remus, Rhea-Silvia Sweet, Sarah M. Thater, Sabine Tran, Kim-Vy Übler, Hannah Valenzuela, Lucas M. Wisnioski, Emily Zibetti, Stefano 2023 https://dx.doi.org/10.48550/arxiv.2303.05520 https://arxiv.org/abs/2303.05520 unknown arXiv Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Astrophysics of Galaxies astro-ph.GA FOS Physical sciences Article article Preprint CreativeWork 2023 ftdatacite https://doi.org/10.48550/arxiv.2303.05520 2023-04-03T13:13:09Z We present the first study of spatially integrated higher-order stellar kinematics over cosmic time. We use deep rest-frame optical spectroscopy of quiescent galaxies at redshifts z=0.05, 0.3 and 0.8 from the SAMI, MAGPI and LEGA-C surveys to measure the excess kurtosis $h_4$ of the stellar velocity distribution, the latter parametrised as a Gauss-Hermite series. Conservatively using a redshift-independent cut in stellar mass ($M_\star = 10^{11}\,{\rm M}_\odot$), and matching the stellar-mass distributions of our samples, we find 7 $σ$ evidence of $h_4$ increasing with cosmic time, from a median value of 0.019$\pm$0.002 at z=0.8 to 0.059$\pm$0.004 at z=0.06. Alternatively, we use a physically motivated sample selection, based on the mass distribution of the progenitors of local quiescent galaxies as inferred from numerical simulations; in this case, we find 10 $σ$ evidence. This evolution suggests that, over the last 7 Gyr, there has been a gradual decrease in the rotation-to-dispersion ratio and an increase ... : 19 pages, 9 figures Accepted for publication in MNRAS ... Article in Journal/Newspaper sami DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
spellingShingle |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences D'Eugenio, Francesco van der Wel, Arjen Piotrowska, Joanna M. Bezanson, Rachel Taylor, Edward N. van de Sande, Jesse Baker, William M. Bell, Eric F. Bellstedt, Sabine Bland-Hawthorn, Joss Bluck, Asa F. L. Brough, Sarah Bryant, Julia J. Colless, Matthew Cortese, Luca Croom, Scott M. Derkenne, Caro van Dokkum, Pieter Fisher, Deanne Foster, Caroline Gallazzi, Anna de Graaff, Anna Groves, Brent van Houdt, Josha Lagos, Claudia del P. Looser, Tobias J. Maiolino, Roberto Maseda, Michael Mendel, J. Trevor Nersesian, Angelos Pacifici, Camilla Poci, Adriano Remus, Rhea-Silvia Sweet, Sarah M. Thater, Sabine Tran, Kim-Vy Übler, Hannah Valenzuela, Lucas M. Wisnioski, Emily Zibetti, Stefano Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
topic_facet |
Astrophysics of Galaxies astro-ph.GA FOS Physical sciences |
description |
We present the first study of spatially integrated higher-order stellar kinematics over cosmic time. We use deep rest-frame optical spectroscopy of quiescent galaxies at redshifts z=0.05, 0.3 and 0.8 from the SAMI, MAGPI and LEGA-C surveys to measure the excess kurtosis $h_4$ of the stellar velocity distribution, the latter parametrised as a Gauss-Hermite series. Conservatively using a redshift-independent cut in stellar mass ($M_\star = 10^{11}\,{\rm M}_\odot$), and matching the stellar-mass distributions of our samples, we find 7 $σ$ evidence of $h_4$ increasing with cosmic time, from a median value of 0.019$\pm$0.002 at z=0.8 to 0.059$\pm$0.004 at z=0.06. Alternatively, we use a physically motivated sample selection, based on the mass distribution of the progenitors of local quiescent galaxies as inferred from numerical simulations; in this case, we find 10 $σ$ evidence. This evolution suggests that, over the last 7 Gyr, there has been a gradual decrease in the rotation-to-dispersion ratio and an increase ... : 19 pages, 9 figures Accepted for publication in MNRAS ... |
format |
Article in Journal/Newspaper |
author |
D'Eugenio, Francesco van der Wel, Arjen Piotrowska, Joanna M. Bezanson, Rachel Taylor, Edward N. van de Sande, Jesse Baker, William M. Bell, Eric F. Bellstedt, Sabine Bland-Hawthorn, Joss Bluck, Asa F. L. Brough, Sarah Bryant, Julia J. Colless, Matthew Cortese, Luca Croom, Scott M. Derkenne, Caro van Dokkum, Pieter Fisher, Deanne Foster, Caroline Gallazzi, Anna de Graaff, Anna Groves, Brent van Houdt, Josha Lagos, Claudia del P. Looser, Tobias J. Maiolino, Roberto Maseda, Michael Mendel, J. Trevor Nersesian, Angelos Pacifici, Camilla Poci, Adriano Remus, Rhea-Silvia Sweet, Sarah M. Thater, Sabine Tran, Kim-Vy Übler, Hannah Valenzuela, Lucas M. Wisnioski, Emily Zibetti, Stefano |
author_facet |
D'Eugenio, Francesco van der Wel, Arjen Piotrowska, Joanna M. Bezanson, Rachel Taylor, Edward N. van de Sande, Jesse Baker, William M. Bell, Eric F. Bellstedt, Sabine Bland-Hawthorn, Joss Bluck, Asa F. L. Brough, Sarah Bryant, Julia J. Colless, Matthew Cortese, Luca Croom, Scott M. Derkenne, Caro van Dokkum, Pieter Fisher, Deanne Foster, Caroline Gallazzi, Anna de Graaff, Anna Groves, Brent van Houdt, Josha Lagos, Claudia del P. Looser, Tobias J. Maiolino, Roberto Maseda, Michael Mendel, J. Trevor Nersesian, Angelos Pacifici, Camilla Poci, Adriano Remus, Rhea-Silvia Sweet, Sarah M. Thater, Sabine Tran, Kim-Vy Übler, Hannah Valenzuela, Lucas M. Wisnioski, Emily Zibetti, Stefano |
author_sort |
D'Eugenio, Francesco |
title |
Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
title_short |
Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
title_full |
Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
title_fullStr |
Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
title_full_unstemmed |
Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C and SAMI surveys: direct evidence for merger-driven growth over the last 7 Gy ... |
title_sort |
evolution in the orbital structure of quiescent galaxies from magpi, lega-c and sami surveys: direct evidence for merger-driven growth over the last 7 gy ... |
publisher |
arXiv |
publishDate |
2023 |
url |
https://dx.doi.org/10.48550/arxiv.2303.05520 https://arxiv.org/abs/2303.05520 |
genre |
sami |
genre_facet |
sami |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.48550/arxiv.2303.05520 |
_version_ |
1766184185094995968 |