Simulating the onset of grazing envelope evolution of binary stars

Sagiv Shiber, Amit Kashi, Noam Soker

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


We present the first three-dimensional gas-dynamical simulations of the grazing envelope evolution (GEE) of stars, with the goal of exploring the basic flow properties and the role of jets at the onset of the GEE. In the simulated runs, a secondary main-sequence star grazes the envelope of the primary asymptotic giant branch (AGB) star. The orbit is circular at the radius of the AGB primary star on its equator.We inject two opposite jets perpendicular to the equatorial plane from the location of the secondary star, and follow the evolution for several orbital periods. We explore the flow pattern by which the jets eject the outskirts of the AGB envelope. After one orbit, the jets start to interact with gas ejected in previous orbits and inflate hot low-density bubbles.

Original languageEnglish
Pages (from-to)L54-L58
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
StatePublished - 1 Feb 2017


  • Binaries: close
  • ISM: jets and outflows
  • Outflows
  • Stars: AGB and post-AGB
  • Stars: jets
  • Stars: winds


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