The Kinematics of Massive Quiescent Galaxies at 1.4 <z <2.1: Dark Matter Fractions, IMF Variation, and the Relation to Local Early-type Galaxies*
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We study the dynamical properties of massive quiescent galaxies at 1.4 z K-band Multi Object Spectrograph (KMOS) on the ESO Very Large Telescope. We use these data to show that the typical dynamical-to-stellar mass ratio has increased by similar to 0.2 dex fromz = 2 to the present day, and we investigate this evolution in the context of possible changes in the stellar initial mass function (IMF) and/or fraction of dark matter contained within the galaxy effective radius,f(DM)[
Originalsprog | Engelsk |
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Artikelnummer | 87 |
Tidsskrift | Astrophysical Journal |
Vol/bind | 899 |
Udgave nummer | 1 |
Antal sider | 29 |
ISSN | 0004-637X |
DOI | |
Status | Udgivet - 14 aug. 2020 |
ID: 248185957