The SAMI Galaxy Survey: the contribution of different kinematic classes to the stellar mass function of nearby galaxies

We use the complete Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to determine the contribution of slow rotators (SRs), as well as different types of fast rotators (FRs), to the stellar mass function of galaxies in the local Universe. We use stellar kinematics not only to...

Full description

Bibliographic Details
Published in:Monthly Notices of the Royal Astronomical Society
Main Authors: Guo, Kexin, Cortese, Luca, Obreschkow, Danail, Catinella, Barbara, van de Sande, Jesse, Croom, Scott M., Brough, Sarah, Sweet, Sarah, Bryant, Julia J., Medling, Anne, Bland-Hawthorn, Joss, Owers, Matt, Richards, Samuel N.
Format: Article in Journal/Newspaper
Language:English
Published: Oxford University Press 2020
Subjects:
Space and Planetary Science
Astronomy and Astrophysics
sami
Online Access:https://espace.library.uq.edu.au/view/UQ:b39e1cc/thumbnail_UQb39e1cc_OA_t.jpg
https://espace.library.uq.edu.au/view/UQ:b39e1cc/UQb39e1cc_OA.pdf
https://espace.library.uq.edu.au/view/UQ:b39e1cc
Description
Summary:We use the complete Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to determine the contribution of slow rotators (SRs), as well as different types of fast rotators (FRs), to the stellar mass function of galaxies in the local Universe. We use stellar kinematics not only to discriminate between fast and SRs, but also to distinguish between dynamically cold systems (i.e. consistent with intrinsic axis ratios= 30 per cent of the galaxy population in each stellar mass bin. The fact that many galaxies that are visually classified as having two-components have stellar spin consistent with dynamically cold discs suggests that the inner component is either rotationally dominated (e.g. bar, pseudo-bulge) or has little effect on the global stellar kinematics of galaxies.

Similar Items