论文标题
地球大小的行星形成在环形恒星的宜居区
Earth-size planet formation in the habitable zone of circumbinary stars
论文作者
论文摘要
在这项工作中，研究了近二元恒星系统在其宜居区内具有地球大小的行星的可能性。首先，我们选择了所有具有确认行星（总计22个系统）的已知封闭式系统来计算其各自宜居区（HZ）的边界。但是，只有八个系统具有计算Hz所需的所有数据。然后，我们使用测试粒子为八个系统中的每个系统中的每个系统探索了宜居区内的稳定性。从结果中，我们选择了五个在可居住区域内具有稳定区域（HZ）的系统，即Kepler-34、35、38、413和453。对于Hz中具有稳定区域的五个系统的五个案例，我们对星球和Planetsimimimimimimimims和Planeter的磁盘进行了一系列数值模拟，以及均匀的Planetary embryos和Planetary embryos和PlaneTery difters的数字图，以及每个系统。我们发现，在Kepler-34和453系统的情况下，在宜居区域内没有形成地球大小的行星。尽管在开普勒453中形成了具有地球样的行星，但它们不在Hz之外。相反，对于开普勒35和38个系统，结果表明，在所有模拟中均形成了潜在的可居住行星。在开普勒413系统的情况下，在一个模拟中，在宜居区域内形成了陆地行星。
In this work is investigated the possibility of close-binary star systems having Earth-size planets within their habitable zones. First, we selected all known close-binary systems with confirmed planets (totaling 22 systems) to calculate the boundaries of their respective habitable zones (HZ). However, only eight systems had all the data necessary for the computation of the HZ. Then, we numerically explored the stability within the habitable zones for each one of the eight systems using test particles. From the results, we selected five systems that have stable regions inside the habitable zones (HZ), namely Kepler-34, 35, 38, 413 and 453. For these five cases of systems with stable regions in the HZ, we perform a series of numerical simulations for planet formation considering disks composed of planetary embryos and planetesimals, with two distinct density profiles, in addition to the stars and host planets of each system. We found that in the case of Kepler-34 and 453 systems no Earth-size planet is formed within the habitable zones. Although planets with Earth-like masses were formed in the Kepler-453, but they were outside the HZ. In contrast, for Kepler-35 and 38 systems, the results showed that potentially habitable planets are formed in all simulations. In the case of the Kepler-413 system, in just one simulation a terrestrial planet was formed within the habitable zone.
