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 1.3 mm continuum ALMA long-baseline observations at 3-5 auresolution of 10 of the brightest discs from the Ophiuchus DIsc SurveyEmploying ALMA (ODISEA) project. We identify a total of 26 narrow rings andgaps distributed in 8 sources and 3 discs with small dust cavities (r $<$10au). We find that two discs around embedded protostars lack the clear gaps andrings that are ubiquitous in more evolved sources with Class II SEDs. Oursample includes 5 objects with previously known large dust cavities (r $>$20au). We find that the 1.3 mm radial profiles of these objects are in goodagreement with those produced by numerical simulations of dust evolution andplanet-disc interactions, which predict the accumulation of mm-sized grains atthe edges of planet-induced cavities. Our long-baseline observations resultedin the largest sample of discs observed at $\sim$3-5 au resolution in any givenstar-forming region (15 objects when combined with Ophiuchus objects in theDSHARP Large Program) and allow for a demographic study of the brightest$\sim5\%$ of the discs in Ophiuchus (i.e. the most likely formation sites ofgiant planets in the cloud). We use this unique sample to propose anevolutionary sequence and discuss a scenario in which the substructuresobserved in massive protoplanetary discs are mainly the result of planetformation and dust evolution. If this scenario is correct, the detailed studyof disc substructures might provide a window to investigate a population ofplanets that remains mostly undetectable by other techniques.

The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution