论文标题
未发展的F型黯然失色的二进制BT VulpeCulae的绝对尺寸
Absolute dimensions of the unevolved F-type eclipsing binary BT Vulpeculae
论文作者
论文摘要
我们报告了1.14天的大量差异V波段光度法和高分辨率光谱，分离的，双线的脱落二进制BT VUL（F0+F7）。我们的径向速度监测和光曲线分析导致M1 = 1.5439 +/- 0.0098 MSUN和R1 = 1.536 +/- 0.018 RSUN，M2 = 1.2196 +/- 0.0080 MSUN和R2 = 1.151 +/-0.029 RSUN，用于下几下，有效温度分别为7270 +/- 150 K和6260 +/- 180 K。两颗恒星都是速度快速的，轨道是圆形的。与雾气系列的恒星演化模型的比较与这些确定相同，表现出[Fe/H] = +0.08的组成，年龄为350 MYR。 BT VUL的两个组成部分非常接近零老龄主序列。
We report extensive differential V-band photometry and high-resolution spectroscopy for the 1.14 day, detached, double-lined eclipsing binary BT Vul (F0+F7). Our radial-velocity monitoring and light curve analysis lead to absolute masses and radii of M1 = 1.5439 +/- 0.0098 MSun and R1 = 1.536 +/- 0.018 RSun for the primary, and M2 = 1.2196 +/- 0.0080 MSun and R2 = 1.151 +/- 0.029 RSun for the secondary. The effective temperatures are 7270 +/- 150 K and 6260 +/- 180 K, respectively. Both stars are rapid rotators, and the orbit is circular. A comparison with stellar evolution models from the MIST series shows excellent agreement with these determinations, for a composition of [Fe/H] = +0.08 and an age of 350 Myr. The two components of BT Vul are very near the zero-age main sequence.
