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

Super-Jupiters, brown dwarfs, and stars can form from the collapse ofself-gravitating discs. Such discs are turbulent, with flocculent spiral armsaccelerating gas to transonic speeds horizontally and vertically. Objects thatfragment from gravito-turbulent discs should spin with a wide range ofdirections, reflecting the random orientations of their parent eddies. We showby direct numerical simulation that obliquities of newly collapsed fragmentscan range up to 45$^\circ$. Subsequent collisions between fragments can furtheralter the obliquity distribution, up to 90$^\circ$ or down to near-zero. Thelarge obliquities of newly discovered super-Jupiters on wide orbits aroundyoung stars may be gravito-turbulent in origin. Obliquely spinning fragmentsare born on orbits that may be inclined relative to their parent discs by up to20$^\circ$, and gravitationally stir leftover material to many times thepre-fragmentation disc thickness.

Primordial Obliquities of Brown Dwarfs and Super-Jupiters from Fragmenting Gravito-Turbulent Discs