Bibcode
Cardona, O.; Crivellari, L.; Simonnneau, E.
Bibliographical reference
In: New quests in stellar astrophysics: the link between stars and cosmology. Proceedings of the international conference held in Puerto Vallarta, México, 26-30 March 2001, edited by Miguel Chávez, Alessandro Bressan, Alberto Buzzoni and Divakara Mayya. Astrophysics and Space Science Library, Vol. 274, Dordrecht: Kluwer Academic Publishers, ISBN 1-4020-0644-6, 2002, p. 29 - 32
Advertised on:
0
2002
Citations
4
Refereed citations
2
Description
Calculations of energy balance in model stellar atmospheres for cold and
moderately cold stars show that the overall energy gained or lost at the
Lyman frequencies (lines plus continuum) can be up to 20 orders of
magnitude higher than in the rest of the spectrum. Due to the great
optical depth at those frequencies, however, monochromatic mean
intensity of the radiation and the corresponding source function are
numerically equal with many significant figures, and give therefore a
vanishing net contribution to the energy balance. As all methods of
temperature correction compute both integrals independently, this can
lead to a biased temperature correction to the model output. We present
here a method to calculate the correction of the temperature in stellar
atmospheres that overcomes the aforesaid difficulty.