Simulations of the Common Envelope Interaction Between a Red Giant Branch Star and Low-Mass Companions

Details Simulations of the Common Envelope Interaction Between a Red Giant Branch Star and Low-Mass Companions Simulations of the Common Envelope Interaction Between a Red Giant Branch Star and Low-Mass Companions

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..447..107p&link_type=abstract

Evolution of compact binaries. Proceedings of a workshop held at Hotel San Martín, Viña del Mar, Chile 6–11 May 2011. ASP Confe

Astronomy and Astrophysics

Astronomy

Scientific paper

We present three-dimensional hydrodynamical simulations of the fast in-spiral phase of the common envelope interaction between a red giant star and a range of companions with different masses. In order to verify the reliability of the numerics we use two different approaches. The code-to-code comparison shows consistent results. We then compare the outcomes of our simulations to post common envelope systems. At the end of the simulations, most of the envelope of the progenitor is still bound to the system and the orbital separations are systematically larger than those observed. We explain what the reasons for this discrepancy might be and how we will proceed with our investigation.

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