Multiplicity Study of Exoplanet Host Stars

在我们用AstraLux研究系外行星宿主恒星的多重性的过程中，我们已经可以研究207个行星系统的恒星多重性状态。此外，我们还可以探测到几个新的同向运动的恒星伴星，它们的伴星关系已经通过第二纪元的后续成像得到了证明。现在，我们希望获得24个新发现的伴星候选者的第二个历元后续图像，以及18个系外行星宿主恒星的第一个历元图像，这些恒星的多样性到目前为止还没有研究过。有了AstraLux，我们可以探测到新的具有系外行星的近距离恒星系统，正如理论所提出的那样，这是行星形成最具挑战性的环境。我们的观测将有助于确定恒星多样性对行星形成和演化的真实的影响。

In the course of our multiplicity study of exoplanet host stars with AstraLux, we could already study the stellar multiplicity status of 207 planetary systems. Furthermore, we could detect several new co-moving stellar companions, whose companionship was proven with 2nd epoch follow-up imaging. Now we want to obtain 2nd epoch follow-up imaging of 24 new recently detected companion-candidates, as well as 1st epoch images of 18 exoplanet host stars, whose multiplicity was not studied so far. With AstraLux we can detect new close stellar systems with exoplanets, the most challenging environments for planet formation, as proposed by theory. Our observations will contribute to the determination of the real impact of stellar multiplicity on planet formation and evolution.