适度丰度变化对Mira变星大气结构和颜色的影响（研究报告）
Effects of moderate abundance changes on the atmospheric structure and colours of Mira variables (Research Note)
摘要：
目的。我们研究的影响，从太阳丰度的大气结构和颜色的典型米拉变量的适度偏差。方法.我们提出了两个Mira变星的动力学不透明度采样模型系列，它们具有（1）1太阳金属丰度3和（2）“温和”的S型C/O丰度比（[C/O]=0.9），具有典型的Zr增强（太阳+1.0）。这些系列相比，以前研究的太阳丰度系列，具有类似的基本参数（质量，光度，周期，半径），是接近的ocet。结果这两个系列显示显着的影响，丰富的分层和红外颜色，但周期到周期的差异掩盖这些影响在大多数脉动阶段，除了一个狭窄的水过滤器的颜色附近的最小相位。
英文摘要：
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 solar metallicity 3 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.
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