منابع مشابه
The s-process in rotating AGB stars
We discuss the occurrence of the s-process during the radiative interpulse phase of rotating AGB stars. Due to differential rotation, protons are mixed into C-rich layers after thermal pulses, in the course of the so called third dredge up episode. We follow the time evolution of key isotope abundances in the relevant layers with a post-processing code which includes time dependant mixing and n...
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Nobuyuki IWAMOTO1,∗, Toshitaka KAJINO, Grant J. MATHEWS, Masayuki Y. FUJIMOTO and Wako AOKI National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan The Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan Center for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA Department of Physics, Hokkaido Univ...
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R. Hirschi∗abc, U. Frischknechtd , M. Pignatariabe, F.-K. Thielemannd , M. E. Bennettab, S. Diehla f g, C. L. Fryera f , F. Herwigabh, A. Hungerfordag, G. Magkotsiosaei, G. Rockefellerag, F. X. Timmesai, and P. Youngai aThe NuGrid Collaboration bAstrophysics Group, Keele University, ST5 5BG, UK cIPMU, University of Tokyo, Kashiwa, Chiba 277-8582, Japan dTheoretical Astrophysics Group, Universit...
متن کاملMixing and the s-process in rotating AGB stars
We model the nucleosynthesis during a radiative interpulse phase of a rotating 3M⊙ Asymptotic Giant Branch (AGB) star. We find an enhanced production of the neutron source species C compared to non-rotating models due to shear mixing of protons and C at the core-envelope interface. We estimate that the resulting total production of heavy elements by slow neutron capture (s-process) is too low t...
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Gaia is a cornerstone mission of the European Space Agency (ESA) selected in 2000, with a target launch date of 2011. The Gaia mission will perform a survey of about 1 billion sources brighter than V = 20. Its goal is to provide astrometry leading to parallaxes, proper-motions and positions. Astrometric data are complemented by multicolour photometry and a spectroscopic instrument (up to V = 17...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2021
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/202040207