期刊
ASTRONOMY & ASTROPHYSICS
卷 565, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201323183
关键词
stars: AGB and post-AGB; stars: atmospheres; stars: abundances
Aims. We study the effects of moderate deviations from solar abundances upon the atmospheric structure and colours of typical Mira variables. Methods. We present two model series of dynamical opacity-sampling models of Mira variables which have (1) 1/3 solar metallicity; and (2) mild S-type C/O abundance ratio ([C/O] = 0.9) with typical Zr enhancement (solar + 1.0). These series are compared to a previously studied solar-abundance series which has similar fundamental parameters (mass, luminosity, period, radius) that are close to those of o Cet. Results. Both series show noticeable effects of abundance upon stratifications and infrared colours but cycle-to-cycle differences mask these effects at most pulsation phases, with the exception of a narrow-water-filter colour near minimum phase.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据