English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present spatially resolved stellar kinematic maps, for the first time, fora sample of 17 intermediate redshift galaxies (0.2 < z < 0.8). We used deepMUSE/VLT integral field spectroscopic observations in the Hubble Deep FieldSouth (HDFS) and Hubble Ultra Deep Field (HUDF), resulting from ~30hintegration time per field, each covering 1'x1' field of view, with ~0.65"spatial resolution. We selected all galaxies brighter than 25mag in the I bandand for which the stellar continuum is detected over an area that is at leasttwo times larger than the spatial resolution. The resulting sample containsmostly late-type disk, main-sequence star-forming galaxies with 10^8.5 -10^10.5 Msun. Using a full-spectrum fitting technique, we derivetwo-dimensional maps of the stellar and gas kinematics, including the radialvelocity V and velocity dispersion sigma. We find that most galaxies in thesample are consistent with having rotating stellar disks with roughly constantvelocity dispersions and that the Vrms=sqrt{V^2+sigma^2} of the gas and stars,a scaling proxy for the galaxy gravitational potential, compare well to eachother. These spatially resolved observations of intermediate redshift galaxiessuggest that the regular stellar kinematics of disk galaxies that is observedin the local Universe was already in place 4 - 7 Gyr ago and that their gaskinematics traces the gravitational potential of the galaxy, thus is notdominated by shocks and turbulent motions. Finally, we build dynamicalaxisymmetric Jeans models constrained by the derived stellar kinematics for twospecific galaxies and derive their dynamical masses. These are in goodagreement (within 25%) with those derived from simple exponential disk modelsbased on the gas kinematics. The obtained mass-to-light ratios hint towardsdark matter dominated systems within a few effective radii.

The MUSE Hubble Ultra Deep Field Survey: V. Spatially resolved stellar kinematics of galaxies at redshift $0.2\lesssim z \lesssim 0.8$