论文标题
使用苔丝观察到的二进制二进制物中的高质量脉动器
High-mass pulsators in eclipsing binaries observed using TESS
论文作者
论文摘要
脉动和二进制都是巨大恒星的常见特征。对黯然失色的二元系统中脉动巨大恒星的研究具有限制恒星结构和进化论的巨大潜力。但是，在进行全天空过境系外行星调查卫星（TESS）任务之前，很少有人详细发现或研究此类系统。我们已经检查了许多已知包含高质量恒星的柔软二进制文件的苔丝光曲线，并编制了18个显示内在可变性的对象的列表。对光曲线进行了建模，以确定系统的物理特性，并去除二进制的效果，以便留下适合于星际震荡分析的残留光曲线。对于Delta CIR，CC CAS，SZ CAM，V436 PER和V539 ARA获得了精确的质量和半径测量。我们搜索了残留的光曲线以获取脉动特征，在我们的18个对象的样本中，我们发现了六个确定的和八个可能的β头孢杆菌脉动的病例，有7例随机低频（SLF）变异性以及八个可能的可能缓慢脉动B（SPB）恒星脉动的实例。我们已经确定的大量脉动黯然失色的系统使高质量恒星的星空学在黯然失色的二进制中成为可行的途径，以限制首次限制大型大型恒星样本的内部物理学。
Pulsations and binarity are both common features of massive stars. The study of pulsating massive stars in eclipsing binary systems hold great potential for constraining stellar structure and evolution theory. However, prior to the all-sky Transiting Exoplanet Survey Satellite (TESS) mission, few such systems had been discovered or studied in detail. We have inspected the TESS light curves of a large number of eclipsing binaries known to contain high-mass stars, and compiled a list of 18 objects which show intrinsic variability. The light curves were modelled both to determine the physical properties of the systems, and to remove the effects of binarity in order to leave residual light curves suitable for asteroseismic analysis. Precise mass and radius measurements were obtained for delta Cir, CC Cas, SZ Cam, V436 Per and V539 Ara. We searched the residual light curves for pulsation signatures and, within our sample of 18 objects, we find six definite and eight possible cases of beta Cephei pulsation, seven cases of stochastic low-frequency (SLF) variability, and eight instances of possible slowly pulsating B (SPB) star pulsation. The large number of pulsating eclipsing systems we have identified makes asteroseismology of high-mass stars in eclipsing binaries a feasible avenue to constrain the interior physics of a large sample of massive stars for the first time.
