The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics
We propose a new predictive theory for the analysis of common envelope (CE) events that incorporates the effects of relevant hydrodynamical processes into a simple analytical framework. We introduce the ejection and dynamical parameters ξ and β , which define whether envelope ejection is energetical...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ada0ae |
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| _version_ | 1850266667813175296 |
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| author | Rosa Wallace Everson Morgan MacLeod Enrico Ramirez-Ruiz |
| author_facet | Rosa Wallace Everson Morgan MacLeod Enrico Ramirez-Ruiz |
| author_sort | Rosa Wallace Everson |
| collection | DOAJ |
| description | We propose a new predictive theory for the analysis of common envelope (CE) events that incorporates the effects of relevant hydrodynamical processes into a simple analytical framework. We introduce the ejection and dynamical parameters ξ and β , which define whether envelope ejection is energetically or hydrodynamically favorable, respectively, during CE inspiral. When combined, these parameters offer a detailed narrative of how inspiral begins, proceeds, and ends that is consistent with preliminary comparisons to 3D hydrodynamical models. This physically motivated framework impacts predictions for CE outcomes, especially for systems that have energy excess, and offers promise as a potential alternative for the treatment of CEs in binary population synthesis. |
| format | Article |
| id | doaj-art-11e18adc6b214a698e16e6fa2d9497a2 |
| institution | OA Journals |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj-art-11e18adc6b214a698e16e6fa2d9497a22025-08-20T01:54:07ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019791L1110.3847/2041-8213/ada0aeThe Energy Sharing Timescale in an Analytic Framework for Common Envelope HydrodynamicsRosa Wallace Everson0https://orcid.org/0000-0001-5256-3620Morgan MacLeod1https://orcid.org/0000-0002-1417-8024Enrico Ramirez-Ruiz2https://orcid.org/0000-0003-2558-3102Department of Astronomy & Astrophysics , University of California, Santa Cruz, Santa Cruz, CA95064, USA ; rosa@ucsc.edu; Department of Physics and Astronomy , University of North Carolina at Chapel Hill, 120 E. Cameron Ave., Chapel Hill, NC 27599, USAInstitute for Theory & Computation , Center for Astrophysics, Harvard & Smithsonian, Cambridge, MA 02138, USADepartment of Astronomy & Astrophysics , University of California, Santa Cruz, Santa Cruz, CA95064, USA ; rosa@ucsc.eduWe propose a new predictive theory for the analysis of common envelope (CE) events that incorporates the effects of relevant hydrodynamical processes into a simple analytical framework. We introduce the ejection and dynamical parameters ξ and β , which define whether envelope ejection is energetically or hydrodynamically favorable, respectively, during CE inspiral. When combined, these parameters offer a detailed narrative of how inspiral begins, proceeds, and ends that is consistent with preliminary comparisons to 3D hydrodynamical models. This physically motivated framework impacts predictions for CE outcomes, especially for systems that have energy excess, and offers promise as a potential alternative for the treatment of CEs in binary population synthesis.https://doi.org/10.3847/2041-8213/ada0aeCommon envelope evolutionCommon envelope binary starsBinary starsInteracting binary starsStellar evolutionStellar mergers |
| spellingShingle | Rosa Wallace Everson Morgan MacLeod Enrico Ramirez-Ruiz The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics The Astrophysical Journal Letters Common envelope evolution Common envelope binary stars Binary stars Interacting binary stars Stellar evolution Stellar mergers |
| title | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| title_full | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| title_fullStr | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| title_full_unstemmed | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| title_short | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| title_sort | energy sharing timescale in an analytic framework for common envelope hydrodynamics |
| topic | Common envelope evolution Common envelope binary stars Binary stars Interacting binary stars Stellar evolution Stellar mergers |
| url | https://doi.org/10.3847/2041-8213/ada0ae |
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