Mira science with interferometry: a review
Mira science with interferometry: a review
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Mira 科学与干涉测量：综述
DOI：
10.1117/12.456978
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Scholz
中科院分区：
文献类型：
--
作者：
M. Scholz
讨论了M型Mira盘亮度分布的模型预测和观测特性。边缘变暗和直径定义的基本问题，分配观测数据的直径类型的数量和解释这些数量的模型直径的概述。解释测量数据的模型属性的影响被澄清。强度的中心-边缘变化（CLV）对波长、恒星参数以及变化相位和周期的依赖关系可用于分析Mira大气的几何和物理结构、确定基本恒星参数以及研究模型的质量。未来理想的观测包括在不同相位和周期同时观测不同的光谱特征、观测激波阵面的位置以及观测偏离球对称的时间和波长依赖性。
Model-predicted and observed properties of the brightness distribution on M-type Mira disks are discussed. Fundamental issues of limb-darkening and diameter definition, of assigning observational data to diameter-type quantities and of interpreting such quantities in terms of model diameters are outlined. The influence of model properties upon interpretation of measured data is clarified. The dependence of the center-to-limb variation (CLV) of intensity on wavelength, on stellar parameters and on variability phase and cycle may be used for analyzing the geometrical and physical structure of the Mira atmosphere, for determining fundamental stellar parameters, and for investigating the quality of models. Desirable future observations include simultaneous observations in different spectral features at different phases and cycles, observation of the position of the shock front and observation of the time- and wavelength-dependence of deviations from spherical symmetry.