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 report on new high-resolution near-infrared images of the gravitationallylensed radio source PKS1830-211, a quasar at z=2.507. These adaptive opticsobservations, taken with the Very Large Telescope (VLT), are further improvedthrough image deconvolution. They confirm the presence of a second object alongthe line of sight to the quasar, in addition to the previously known spiralgalaxy. This additional object is clearly extended in our images. However, itsfaint luminosity does not allow to infer any photometric redshift. If thisgalaxy is located in the foreground of PKS1830-211, it complicates the modelingof this system and decreases the interest in using PKS1830-211 as a means todetermine H0 via the time delay between the two lensed images of the quasar.Comment: Accepted in A&A Letter

Confirmation of two extended objects along the line of sight to PKS 1830-211 with ESO-VLT adaptive optics imaging