银河系 RRab 恒星的参数和爱丁顿脉动常数

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astrophysics and Space Science Pub Date : 2024-07-12 DOI:10.1007/s10509-024-04331-5

S. V. Sinitsyn

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引用次数: 0

摘要

对于银河系 RRab 星，分析了自 1990 年以来已知的 121 个经验和半经验金属性-绝对星等关系。对于这些变量，利用其已知的经验数据，一方面确定了质量、半径、有效表面温度、测亮校正、光度、绝对星等之间的关系，另一方面确定了金属性和脉动周期之间的关系。利用这些关系，首次精确测定了 RRab 星的爱丁顿脉动常数的经验值。

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Parameters and the Eddington pulsation constant of Galactic RRab stars

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Parameters and the Eddington pulsation constant of Galactic RRab stars

For Galactic RRab stars 121 empirical and semiempirical metallicity–absolute magnitude relations known since 1990 are analyzed. For these variables, using their known empirical data, relations are determined between the mass, the radius, the effective surface temperature, the bolometric correction, the luminosity, the absolute magnitude, on the one hand, and the metallicity and the pulsation period, on the other hand. Using these relations, the empirical value of the Eddington pulsation constant is accurately determined for RRab stars for the first time.

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来源期刊

Astrophysics and Space Science 地学天文-天文与天体物理

CiteScore

3.40

自引率

5.30%

发文量

106

审稿时长

2-4 weeks

期刊介绍： Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.