The MAGPI survey: using kinematic asymmetries in stars and gas to dissect drivers of galaxy dynamical evolution-Reference-Cited by-同舟云学术

The MAGPI survey: using kinematic asymmetries in stars and gas to dissect drivers of galaxy dynamical evolution

Published:2024-06-03 Issue:3 Volume:531 Page:3011-3022
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Bagge R S¹²^ORCID,Foster C¹²^ORCID,D’Eugenio F³⁴^ORCID,Battisti A²⁵^ORCID,Bellstedt S⁶^ORCID,Derkenne C²⁷^ORCID,Vaughan S²⁸^ORCID,Mendel T²⁵,Barsanti S²⁵⁸^ORCID,Harborne K E²⁶,Croom S M²⁹^ORCID,Bland-Hawthorn J²⁹,Grasha K²⁵^ORCID,Lagos C D P²⁶,Sweet S M²⁸,Mailvaganam A²⁷,Mukherjee T²⁷,Valenzuela L M¹⁰^ORCID,van de Sande J²⁹^ORCID,Wisnioski E²⁵^ORCID,Zafar T²⁷^ORCID

Affiliation:

1. School of Physics, University of New South Wales , Kensington, NSW 2032 , Australia

2. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia

3. Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA , UK

4. Cavendish Laboratory - Astrophysics Group, University of Cambridge , 19 JJ Thomson Avenue, Cambridge CB3 0HE , UK

5. Research School of Astronomy and Astrophysics, Australian National University , Cotter Road, Weston Creek, ACT 2611 , Australia

6. International Centre for Radio Astronomy Research, The University of Western Australia , 35 Stirling Highway, Crawley, WA 6009 , Australia

7. School of Mathematical and Physical Sciences, Macquarie University , Sydney, NSW 2109 , Australia

8. School of Mathematics and Physics, University of Queensland , Brisbane, QLD 4072 , Australia

9. Sydney Institute for Astronomy, School of Physics, University of Sydney , Sydney, NSW 2006 , Australia

10. Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians-Universität München , Scheinerstr 1, D-81679 München , Germany

Abstract

ABSTRACT We present a study of kinematic asymmetries from the integral field spectroscopic surveys MAGPI and SAMI. By comparing the asymmetries in the ionized gas and stars, we aim to disentangle the physical processes that contribute to kinematic disturbances. We normalize deviations from circular motion by S05, allowing us to study kinematic asymmetries in the stars and gas, regardless of kinematic temperature. We find a similar distribution of stellar asymmetries in galaxies where we do and do not detect ionized gas, suggesting that whatever is driving the stellar asymmetries does not always lead to gas removal. In both MAGPI and SAMI, we find an anticorrelation between stellar asymmetry and stellar mass, that is absent in the gas asymmetries. After stellar mass and mean-stellar-age matching distributions, we find that at all stellar masses, MAGPI galaxies display larger stellar asymmetry compared to SAMI galaxies. In both MAGPI and SAMI galaxies, we find that star-forming galaxies with old mean-stellar-ages typically have larger asymmetries in their gas compared to their stars, whereas galaxies with young mean-stellar-ages have larger asymmetries in their stars compared to their gas. We suggest that this results from continuous, clumpy accretion of gas.

Funder

Studienstiftung des Deutschen Volkes

Australian Research Council

Publisher

Oxford University Press (OUP)

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stae1341/58065261/stae1341.pdf

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