Limit on overshooting from the convective core in upper main-sequence stars

Stothers, R B; Chin, Chaowen

doi:10.1086/185621

Title: Limit on overshooting from the convective core in upper main-sequence stars

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Abstract

Overshooting of convective elements far beyond the classical Schwarzschild convective core boundary in theoretical models of massive ZAMS stars is found to lead to significant reductions of stellar luminosity and radius, provided that the temperature gradient in the overshoot region can be approximated by the adiabatic gradient. Comparison of these theoretical models with binary star data for the range of 5-15 solar masses indicates that the ratio of overshoot distance to pressure scale height is probably less than 1.5. This result apparently excludes any overshooting theories that predict very extended adiabatic convective cores. 47 refs.

Authors:

Stothers, R B; Chin, Chaowen ^[1]

NASA, Goddard Institute for Space Studies, New York, NY (USA)

Publication Date:: Mon Jan 01 00:00:00 EST 1990

OSTI Identifier:: 6904956

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal; (USA)

Additional Journal Information:: Journal Volume: 348; Journal ID: ISSN 0004-637X

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MAIN SEQUENCE STARS; CONVECTION; ADIABATIC PROCESSES; BINARY STARS; COMPARATIVE EVALUATIONS; LIMITING VALUES; LUMINOSITY; MASS; MORPHOLOGY; SCHWARZSCHILD METRIC; STAR EVOLUTION; STAR MODELS; ENERGY TRANSFER; HEAT TRANSFER; MASS TRANSFER; MATHEMATICAL MODELS; METRICS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; STARS; 640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources

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                    Stothers, R B, and Chin, Chaowen. Limit on overshooting from the convective core in upper main-sequence stars.  United States: N. p., 1990. 
        Web.  doi:10.1086/185621.

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                    Stothers, R B, & Chin, Chaowen. Limit on overshooting from the convective core in upper main-sequence stars.  United States.  https://doi.org/10.1086/185621

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                    Stothers, R B, and Chin, Chaowen. 1990.  
        "Limit on overshooting from the convective core in upper main-sequence stars".  United States.  https://doi.org/10.1086/185621.

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@article{osti_6904956,

  title        = {Limit on overshooting from the convective core in upper main-sequence stars},

  author       = {Stothers, R B and Chin, Chaowen},

  abstractNote = {Overshooting of convective elements far beyond the classical Schwarzschild convective core boundary in theoretical models of massive ZAMS stars is found to lead to significant reductions of stellar luminosity and radius, provided that the temperature gradient in the overshoot region can be approximated by the adiabatic gradient. Comparison of these theoretical models with binary star data for the range of 5-15 solar masses indicates that the ratio of overshoot distance to pressure scale height is probably less than 1.5. This result apparently excludes any overshooting theories that predict very extended adiabatic convective cores. 47 refs.},

  doi          = {10.1086/185621},

  url          = {https://www.osti.gov/biblio/6904956},
  journal      = {Astrophysical Journal; (USA)},

  issn         = {0004-637X},

  number       = ,

  volume       = 348,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 1990},

  month        = {Mon Jan 01 00:00:00 EST 1990}

}

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https://doi.org/10.1086/185621

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