论文标题
他的白色矮人在黯然失色的二进制文件中。 iii。黄蜂1625-04
The Pre-He White Dwarfs in Eclipsing Binaries. III. WASP 1625-04
论文作者
论文摘要
1SWASP J162545.15-043027.9（WASP 1625-04）已宣布为EL CVN候选者之一，显示了总的原发性蚀和椭圆形变化。本文根据我们从2015年至2020年进行的高分辨率光谱验证介绍了二进制恒星的绝对性能。根据光谱分析，这两个组件的径向速度（RVS）是通过有效温度$ t _ {\ rm eff，1} = 8990 \ pm pm 200 $ $ k k and pm pm k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k k y a，$ t的5990 $ $ 5 $ 5 i。 S $^{ - 1} $，用于更大的主要主题。用档案WASP光度法分析RV测量值。从我们获得的建模中：$ m_1 = 1.745 \ pm 0.013 $ m $ _ \ odot $，$ m_2 = 0.187 \ pm 0.002 $ m $ _ \ odot $，$ r_1 = 1.626 \ 1.626 \ pm 0.008美元15.5 \ pm 1.4 $ l $ _ \ odot $，$ l_2 = 1.84 \ pm 0.16 $ l $ _ \ odot $。在Hertzsprung-Russell图中，WASP 1625-04 a位于零年龄的主序列上，其伴侣与恒定亮度阶段的0.19 m $ _ \ odot $的氦核白矮型模型非常相符。我们的改进结果表明，WASP 1625-04是典型的EL CVN型二进制二进制，质量比低，并且在薄盘人群中是$ M_2 $组合，并且是前二进制前二进制稳定，非保守质量转移的产物。
1SWASP J162545.15-043027.9 (WASP 1625-04) has been announced as one of EL CVn candidates showing total primary eclipses and ellipsoidal variations. This paper presents the absolute properties of the binary star, based on our high-resolution spectroscopy conducted from 2015 through 2020. From the spectral analysis, the radial velocities (RVs) for both components were obtained with the effective temperature $T_{\rm eff,1} = 8990 \pm 200$ K and the rotational rate $v_1\sin$$i=53\pm5$ km s$^{-1}$ for the more massive primary. The RV measurements were analyzed with archival WASP photometry. From the modelling we obtained: $M_1 = 1.745 \pm 0.013$ M$_\odot$, $M_2 = 0.187 \pm 0.002$ M$_\odot$, $R_1 = 1.626 \pm 0.008$ M$_\odot$, $R_2 = 0.290 \pm 0.003$ M$_\odot$, $L_1 = 15.5 \pm 1.4$ L$_\odot$, and $L_2 = 1.84 \pm 0.16$ L$_\odot$. In the Hertzsprung-Russell diagram, WASP 1625-04 A lies on the zero-age main sequence and its companion accords well with the helium-core white dwarf models of 0.19 M$_\odot$ in the constant luminosity phase. Our improved results demonstrate that WASP 1625-04 is a typical EL CVn-type binary with a low mass ratio and $M_2$ combination in the thin-disk population and is the product of the stable, non-conservative mass transfer of the precursor binary.
