Journal
ASTROPHYSICAL JOURNAL
Volume 899, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aba75c
Keywords
Binary stars; Common envelope binary stars; Close binary stars; Common envelope evolution; Stellar evolution; Late stellar evolution; Stellar interiors
Categories
Funding
- Eugene V. Cota-Robles Fellowship
- National Science Foundation (NSF) Graduate Research Fellowship Program [1339067]
- Heising-Simons Foundation
- Danish National Research Foundation [DNRF132]
- Vera Rubin Presidential Chair for Diversity at UCSC
- Kavli Foundation
- DNRF
- Dark Cosmology Centre
- Direct For Education and Human Resources
- Division Of Graduate Education [1339067] Funding Source: National Science Foundation
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Common envelope evolution, the key orbital tightening phase of the traditional formation channel for close binaries, is a multistage process that presents many challenges to the establishment of a fully descriptive, predictive theoretical framework. In an approach complementary to global 3D hydrodynamical modeling, we explore the range of applicability for a simplified drag formalism that incorporates the results of local hydrodynamic wind tunnel simulations into a semi-analytical framework in the treatment of the common envelope dynamical inspiral phase using a library of realistic giant branch stellar models across the low, intermediate, and high-mass regimes. In terms of a small number of key dimensionless parameters, we characterize a wide range of common envelope events, revealing the broad range of applicability of the drag formalism as well its self-similar nature across mass regimes and ages. Limitations arising from global binary properties and local structural quantities are discussed together with the opportunity for a general prescriptive application for this formalism.
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