对《3He的深度混合：调和大爆炸与恒星核合成》的评论

Comment on "Deep mixing of 3He: reconciling Big Bang and stellar nucleosynthesis".

作者信息

Balser Dana S, Rood Robert T, Bania T M

机构信息

National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475, USA.

出版信息

Science. 2007 Aug 31;317(5842):1170. doi: 10.1126/science.1140657.

DOI:10.1126/science.1140657

PMID:17761865

Abstract

Eggleton et al. (Reports, 8 December 2006, p. 1580) reported on a deep-mixing mechanism in low-mass stars caused by a Rayleigh-Taylor instability that destroys all of the helium isotope 3He produced during the star's lifetime. Observations of 3He in planetary nebulae, however, indicate that some stars produce prodigious amounts of 3He. This is inconsistent with the claim that all low-mass stars should destroy 3He.

摘要

埃格leton等人（《报告》，2006年12月8日，第1580页）报告了低质量恒星中由瑞利 - 泰勒不稳定性引起的一种深层混合机制，该机制会破坏恒星一生中产生的所有氦同位素³He。然而，对行星状星云的³He观测表明，一些恒星会产生大量的³He。这与所有低质量恒星都会破坏³He的说法不一致。