http://arxiv.org/abs/2110.02227
We present small scale three dimensional hydrodynamical simulations of the evolution of a 0.3Msun main sequence star which launches two perpendicular jets within the envelope of a 0.88Msun red giant. Based on the large scale simulations of Shiber et al. (2019), we study the dynamics of the jets either when the secondary star is grazing the envelope of the red giant, or when it has plunged-in the envelope. The dynamics of the jets through the common envelope (CE) depend on the conditions of the environment as well as on the jet power. Jets are successful in removing the envelope during the early grazing envelope phase and the initial plunge-in CE phases. Deep inside the CE, the jets are drowned. High luminosity emission going from X-rays to UV and optical is expected when the jets break out of the CE. We find that the mass accretion onto the MS star is 1-10\% of the Bondi Hoyle Littleton rate. The amount of angular momentum accreted on to the secondary is not large enough to form a disk. Our study shows the benefits of coupling large scale models with small scale as the global evolution can critically depend on the small scale phenomena.
D. Lopez-Camara, F. Colle, E. Mendez, et. al.
Thu, 7 Oct 21
34/51
Comments: 9 pages, 7 figures, 1 table, submitted to MNRAS
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