Massive Stars: Input Physics and Stellar Models |
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Authors: | M F El Eid L-S The B S Meyer |
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Institution: | 1. Department of Physics, American University of Beirut, P.O. Box 11-236, Beirut, Lebanon 2. Department of Physics and Astronomy, Kinard Laboratory of Physics, Clemson University, Clemson, SC, 29634-0978, USA
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Abstract: | We present a general overview of the structure and evolution of massive stars of masses ≥12 M ⊙ during their pre-supernova stages. We think it is worth reviewing this topic owing to the crucial role of massive stars in astrophysics, especially in the evolution of galaxies and the universe. We have performed several test computations with the aim to analyze and discuss many physical uncertainties still encountered in massive-star evolution. In particular, we explore the effects of mass loss, convection, rotation, 12C(α,γ)16O reaction and initial metallicity. We also compare and analyze the similarities and differences among various works and ours. Finally, we present useful comments on the nucleosynthesis from massive stars concerning the s-process and the yields for 26Al and 60Fe. |
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