论文标题
半模式的二进制二进制$μ^1 $ SCO在光时反射中进行相锁的极化
Phase-locked polarization by photospheric reflection in the semidetached eclipsing binary $μ^1$ Sco
论文作者
论文摘要
我们报告了明亮（$ m_v $ = 2.98-3.24）半决赛的二进制二进制$μ^1 $ SCO（HD 151890）中的相锁极化的检测。使用两个不同的河比级（高精度极化仪器）极化器的望远镜的望远镜在多个光度带中观察到了现象，望远镜的大小范围从35厘米到3.9 m。极化的峰值到下的幅度是波长且大，$ \ sim $ \ sim $ 700份的绿光，即使是最小的望远镜，也很容易看到。我们使用Synspec/Vlidort极化辐射转移模型和Wilson-Devinney几何形式主义拟合极化相曲线，我们将详细描述。每颗恒星的光反射到另一个恒星，以及潮汐变形和日食效应的贡献少得多，完全解释了极化幅度。过去，半度假二进制的极化主要归因于遗嘱外气的散射。我们的新解释有助于确定非分泌系统中此类恒星的质量。
We report the detection of phase-locked polarization in the bright ($m_V$=2.98-3.24) semidetached eclipsing binary $μ^1$ Sco (HD 151890). The phenomenon was observed in multiple photometric bands using two different HIPPI-class (HIgh Precision Polarimetric Instrument)polarimeters with telescopes ranging in size from 35-cm to 3.9-m. The peak-to-trough amplitude of the polarization is wavelength dependent and large, $\sim$700 parts-per-million in green light, and is easily seen with even the smallest telescope. We fit the polarization phase curve with a SYNSPEC/VLIDORT polarized radiative transfer model and a Wilson-Devinney geometric formalism, which we describe in detail. Light from each star reflected by the photosphere of the other, together with a much smaller contribution from tidal distortion and eclipse effects, wholly accounts for the polarization amplitude. In the past polarization in semidetached binaries has been attributed mostly to scattering from extra-stellar gas. Our new interpretation facilitates determining masses of such stars in non-eclipsing systems.
