Common Envelope Wind Tunnel: Range of Applicability and Self-similarity in Realistic Stellar Envelopes
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Common Envelope Wind Tunnel : Range of Applicability and Self-similarity in Realistic Stellar Envelopes. / Everson, Rosa Wallace; MacLeod, Morgan; De, Soumi; Macias, Phillip; Ramirez-Ruiz, Enrico.
I: Astrophysical Journal, Bind 899, Nr. 1, 77, 14.08.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Common Envelope Wind Tunnel
T2 - Range of Applicability and Self-similarity in Realistic Stellar Envelopes
AU - Everson, Rosa Wallace
AU - MacLeod, Morgan
AU - De, Soumi
AU - Macias, Phillip
AU - Ramirez-Ruiz, Enrico
PY - 2020/8/14
Y1 - 2020/8/14
N2 - 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.
AB - 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.
KW - Binary stars
KW - Common envelope binary stars
KW - Close binary stars
KW - Common envelope evolution
KW - Stellar evolution
KW - Late stellar evolution
KW - Stellar interiors
KW - HYDRODYNAMIC SIMULATIONS
KW - EVOLUTION
KW - ENERGY
KW - STAR
KW - COMPANION
KW - EJECTION
KW - OBJECTS
KW - EVENTS
U2 - 10.3847/1538-4357/aba75c
DO - 10.3847/1538-4357/aba75c
M3 - Journal article
VL - 899
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 77
ER -
ID: 248185885