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arXiv 0907.4711astro-ph.SR
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牧夫座七颗场RR天琴座星的物理参数

Physical parameters of seven field RR Lyrae Stars in Bootes

J. H. Peña, A. Arellano Ferro, R. Peña Miller, J. P. Sareyan, M. Alvarez

摘要:

本文报道了牧夫座RR型天琴座恒星AE、RS、ST、TV、TW、UU和XX的斯特伦格伦紫外-β测光。根据光变曲线的傅立叶分解和经验刻度,估算了M/Mo,log(L/Lo),M_V,log T_eff和[Fe/H]等物理参数。根据观测到的光度指数和大气模型的综合指数,确定了恒星沿脉动周期的详细行为。红化的区域被认为是可以忽略不计的,从红化的几个物体在同一地区的天空中估计。因此,到各个对象的距离也被估计。

英文摘要:

Strömgren uvby-beta photometry is reported for the RR Lyrae stars AE, RS, ST, TV, TW, UU, and XX in Bootes. The physical parameters M/Mo, log (L/Lo), M_V, log T_eff and [Fe/H], have been estimated from the Fourier decomposition of the light curves and the empirical calibrations developed for this type of stars. Detailed behavior of the stars along the cycle of pulsation has been determined from the observed photometric indices and the synthetic indices from atmospheric models. The reddening of the zone is found to be negligible, as estimated from the reddening of several objects in the same region of the sky. Hence the distances to the individual objects are also estimated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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