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/

Zendy Plus

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

Zendy Tools

Zendy Open

We present a new study of archival ALMA observations of the CO(2-1) lineemission of the host galaxy of quasar RX J1131 at redshift $z$=0.654, lensed bya foreground galaxy. A simple lens model is shown to well reproduce the opticalimages obtained by the Hubble Space Telescope. Clear evidence for rotation ofthe gas contained in the galaxy is obtained and a simple rotating disc model isshown to give an excellent overall description of the morpho-kinematics of thesource. The possible presence of a companion galaxy suggested by some previousauthors is not confirmed. Detailed comparison between model and observationsgives evidence for a more complex dynamics than implied by the model. Dopplervelocity dispersion within the beam size in the image plane is found to accountfor the observed line width.

Morpho-kinematics of the molecular gas in a quasar host galaxy at redshift $z$=0.654