On the origin of the solar system s-process abundances

Abstract

view Abstract Citations (32) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Origin of the Solar System s-Process Abundances Malaney, Robert A. ; Boothroyd, Arnold I. Abstract In the search for the origin of the solar system s-process abundances much attention has been focused on the intershell zones of thermally pulsing asymptotic giant branch (AGB) stars. It has recently been suggested that, relative to the poor fits obtained from intermediate-mass AGB models, low-mass AGB models may result in much better fits to the observed solar system abundances. This suggestion was motivated by the high intershell base temperatures indicated by recent low-mass AGB calculations. Using new data, presented for the peak intershell base temperature in such stars, the s-process enhancements occurring in the intershell zones of low-mass AGB stars are calculated. A nonsolar distribution of s-process abundances is reported for all realistic AGB models studied. Other possible astrophysical sites for the origin of the solar system s-process abundances are discussed. Publication: The Astrophysical Journal Pub Date: September 1987 DOI: 10.1086/165602 Bibcode: 1987ApJ...320..866M Keywords: Abundance; Evolution (Development); Giant Stars; Nuclear Capture; Solar System; Stellar Interiors; Asymptotic Giant Branch Stars; Nuclear Fusion; Stellar Envelopes; Stellar Models; Stellar Temperature; Astrophysics; ABUNDANCES; NUCLEOSYNTHESIS; STARS: INTERIORS full text sources ADS |