Different higher-order kinematics between star-forming and quiescent galaxies based on the SAMI, MAGPI and LEGA-C surveys

Autor(en)

Francesco D'Eugenio, Arjen van der Wel, Caro Derkenne, Josha van Houdt, Rachel Bezanson, Edward N. Taylor, Jesse van de Sande, William M. Baker, Eric F. Bell, Joss Bland-Hawthorn, Asa F. L. Bluck, Sarah Brough, Julia J. Bryant, Matthew Colless, Luca Cortese, Scott M. Croom, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Amelia Fraser-McKelvie, Anna Gallazzi, Anna de Graaff, Brent Groves, Claudia del P. Lagos, Tobias J. Looser, Roberto Maiolino, Michael Maseda, J. Trevor Mendel, Angelos Nersesian, Camilla Pacifici, Joanna M. Piotrowska, Adriano Poci, Rhea-Silvia Remus, Gauri Sharma, Sarah M. Sweet, Sabine Thater, Kim Vy Tran, Hannah Übler, Lucas M. Valenzuela, Emily Wisnioski, Stefano Zibetti

Abstrakt

We present the first statistical study of spatially integrated non-Gaussian stellar kinematics spanning 7 Gyr in cosmic time. We use deep, rest-frame optical spectroscopy of massive galaxies (stellar mass) 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 parametrized as a Gauss-Hermite series. We find that at all redshifts where we have large enough samples, h

₄ anticorrelates with the ratio between rotation and dispersion, highlighting the physical connection between these two kinematic observables. In addition, and independently from the anticorrelation with rotation-to-dispersion ratio, we also find a correlation between h

₄ and M, potentially connected to the assembly history of galaxies. In contrast, after controlling for mass, we find no evidence of independent correlation between h

₄ and aperture velocity dispersion or galaxy size. These results hold for both star-forming and quiescent galaxies. For quiescent galaxies, h

₄ also correlates with projected shape, even after controlling for the rotation-to-dispersion ratio. At any given redshift, star-forming galaxies have lower h

₄ compared to quiescent galaxies, highlighting the link between kinematic structure and star-forming activity.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

University of Cambridge, Ghent University , Macquarie University, ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Max-Planck-Institut für Astronomie, University of Pittsburgh, Swinburne University of Technology, The University of Sydney, University of Michigan, Florida International University, University of New South Wales, Yale University, INAF - Osservatorio Astrofisico di Arcetri, Leiden University, Australian National University, University of Western Australia, University College London, University of Wisconsin, Madison, Space Telescope Science Institute, Durham University, Ludwig-Maximilians-Universität München, University of the Western Cape (UWC), University of Queensland, Texas A&M University

Journal

Monthly Notices of the Royal Astronomical Society

Band

525

Seiten

2765-2788

Anzahl der Seiten

24

ISSN

0035-8711

DOI

https://doi.org/10.1093/mnras/stac3536

Publikationsdatum

10-2023

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie, 103004 Astrophysik

Schlagwörter

ASJC Scopus Sachgebiete

Astronomy and Astrophysics, Space and Planetary Science

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/41008327-a149-42b2-9336-22a8ec56119e