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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  • J. Trevor Mendel
  • Alessandra Beifiori
  • Roberto P. Saglia
  • Ralf Bender
  • Brammer, Gabriel
  • Jeffrey Chan
  • Natascha M. Foerster Schreiber
  • Matteo Fossati
  • Audrey Galametz
  • Ivelina G. Momcheva
  • Erica J. Nelson
  • David J. Wilman
  • Stijn Wuyts

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)[

Original languageEnglish
Article number87
JournalAstrophysical Journal
Volume899
Issue number1
Number of pages29
ISSN0004-637X
DOIs
Publication statusPublished - 14 Aug 2020

    Research areas

  • Galaxy kinematics, Galaxy evolution, High-redshift galaxies, TO-LIGHT RATIO, VELOCITY-DISPERSION EVOLUTION, MULTI-GAUSSIAN EXPANSION, STELLAR ANGULAR-MOMENTUM, STAR-FORMATION HISTORIES, HIGH-REDSHIFT GALAXIES, INSIDE-OUT GROWTH, ELLIPTIC GALAXIES, FUNDAMENTAL PLANE, ATLAS(3D) PROJECT

ID: 248185957