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

We present evolutionary pathways for creating hot subdwarf OB (sdOB) starsfrom hierarchical triple configurations. We use the population synthesis codeMultiple Stellar Evolution (MSE) to follow the stellar, binary, andgravitational dynamical evolution of triple-star systems. To ascertain theeffect of the outer tertiary, we also consider the evolution of the innerbinary with the tertiary component removed. We find we are able to create sdOBstars in single, binary and triple configurations. We also demonstrate that itis possible to form sdOBs in systems which undergo triple common envelopeevolution, when the tertiary star undergoes unstable mass transfer onto theinner binary. We are unable to create single or wide sdOB systems withoutinvolving a merger earlier in the evolution. The triples can produce sdOBs inbinaries with wide, non-interacting companions through binary interactions,which is impossible in isolated binaries. Owing to the closeness of the innerbinary in hierarchical triples the formation channels associated with stablemass transfer are suppressed when compared to the isolated binary case.

Forming Hot Subluminous Stars from Hierarchical Triples -- I. The Role of an Outer Tertiary on Formation Channels