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16 Cygni A: A Testbed for Stellar Core Physics

C. I. S. A. Rocha, C. J. G. N. Pereira, M. S. Cunha, M. J. P. F. G. Monteiro, B. Nsamba, T. L. Campante

Abstract
We present a novel method aimed at reducing the number of stellar models accepted by the Forward Modelling down to the ones that better represent the core of a specific star. The method is illustrated on the bright, solar-like pulsator 16 Cygni A. We show that by comparing the observed frequency ratios for this benchmark star to the ones derived from stellar models, we are able to constrain further the fraction of hydrogen in the core, establishing its precise evolutionary state.

Dynamics of the Sun and Stars
Mário J.P.F.G. Monteiro, Rafael A. García, Jørgen Christensen-Dalsgaard, Scott W. McIntosh

Springer
Series Astrophysics and Space Science Proceedings
Volume 57, Page 281
2020 December

>> ADS>> DOI

Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia