牧夫座七颗RR天琴座恒星的物理参数测定

Third Coast Pub Date : 2007-06-01 DOI:10.1553/CIA150S385

J. Pena, A. Arellano, J. Sareyan, R. Peña, M. Álvarez

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引用次数: 1

摘要

为了确定天琴座RR星AE、RS、ST、TV、TW、UU和牧夫座XX星的物理参数，对它们进行了紫外β光电光度测定。我们利用了由光曲线得出的傅里叶参数与物理参数(如绝对星等Mv、本质色(B−V)0和金属丰度[Fe/H])之间的相关性。一旦确定了变红，就会得到未变红的指数，并与我们确定的金属丰度的理论模型进行比较，沿着周期跟踪Teff和log g。

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Physical parameter determination of seven RR Lyrae stars in Bootes

uvbyβ photoelectric photometry of the RR Lyrae stars AE, RS, ST, TV, TW, UU, and XX Bootis has been acquired in order to determine the physical parameters of the stars. We used the correlation between the Fourier parameters derived from the light curves and the physical parameters such as the absolute magnitude Mv , intrinsic colour (B −V )0 and metal abundance [Fe/H]. Once reddening has been determined, unreddened indices are obtained and Teff and log g followed along the cycle, using a comparison with the theoretical models given for our determined metallicity.

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Third Coast

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