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Stellar evolution I - Calibration of the Hertzsprung-Russell diagram in terms of age and mass for main-sequence B and A stars

T. Kelsall, Bengt Stroemgren

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Abstract

On the basis of improved values of the energy-generation function and the opacity function that have become available in recent years, evolutionary model sequences of main-sequence stars for the mass range log M/M,= 0.20 to 0.85 have been computed.The calibration of the Hertzsprung-Russell diagram, in t e r m s of age and mass for mainsequence B and A stars, presented in this paper was derived from the results of these evolutionary model sequence calculations.

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On the basis of improved values of the energy-generation function and the opacity function that have become available in recent years, evolutionary model sequences of main-sequence stars for the mass range log M/M,= 0.20 to 0.85 have been computed.The calibration of the Hertzsprung-Russell diagram, in t e r m s of age and mass for mainsequence B and A stars, presented in this paper was derived from the results of these evolutionary model sequence calculations.

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Available abstract

On the basis of improved values of the energy-generation function and the opacity function that have become available in recent years, evolutionary model sequences of main-sequence stars for the mass range log M/M,= 0.20 to 0.85 have been computed.The calibration of the Hertzsprung-Russell diagram, in t e r m s of age and mass for mainsequence B and A stars, presented in this paper was derived from the results of these evolutionary model sequence calculations.

Key concepts: Hertzsprung–Russell diagram, Diagram, Stars, Calibration, Sequence (biology), Astrophysics, Main sequence, Stellar evolution

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