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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The nearby system 4C12.50, also known as IRAS 13451+1217 and PKS 1345+12, isa merger of gas-rich galaxies with infrared and radio activity. It has aperturbed interstellar medium (ISM) and a dense configuration of gas and dustaround the nucleus. The radio emission at small ($\sim$100 pc) and large($\sim$100 kpc) scales, as well as the large X-ray cavity in which the systemis embedded, are indicative of a jet that could have affected the ISM. Wecarried out observations of the CO(1-0), (3-2), and (4-3) lines with theAtacama Large Millimeter Array (ALMA) to determine basic properties (i.e.,extent, mass, and excitation) of the cold molecular gas in this system,including its already-known wind. The CO emission reveals the presence ofgaseous streams related to the merger, which result in a small($\sim$4kpc-wide) disk around the western nucleus. The disk reaches arotational velocity of 200 $kms^{-1}$ , and has a mass of3.8($\pm$0.4)$\times$10${^9}M_{\odot}$. It is truncated at a gaseous ridgenorth of the nucleus that is bright in [O III]. Regions with high-velocity COemission are seen at signal-to-noise ratios of between 3 and 5 along filamentsthat radially extend from the nucleus to the ridge and that are bright in [OIII] and stellar emission. A tentative wind detection is also reported in thenucleus and in the disk. The molecular gas speed could be as high as 2200$kms^{-1}$ and the total wind mass could be as high as1.5($\pm$0.1)$\times$10$^9M_{\odot}$. Energetically, it is possible that thejet, assisted by the radiation pressure of the active nucleus or the stars,accelerated clouds inside an expanding bubble.

Complex molecular gas kinematics in the inner 5 kpc of 4C12.50 as seen by ALMA