论文标题
X射线排放来自托管LTT 1445三星级系统的X射线排放
X-ray Emission from the Exoplanet Hosting LTT 1445 Triple Star System
论文作者
论文摘要
JWST将能够观察到M矮人的岩石行星的气氛。 M Dwarf三星级系统LTT 1445在6.86 PC的距离处载有一些最近的岩石陆地行星。这些行星最有可能绕M 3.5V星LTT 1445A绕。在28.6 ksec chandra acis-s3观察结果中，我们在LTT 1445系统中进行了空间解决并检测到所有三颗星，ii）测量了单个星星的X射线亮度，包括LTT 1445a，首次研究了X射线源的强大变异性，并研究了X射线的变异性，并调查了A和C的变异性，A and coron cor）and a and c的变异性是A and Con和C and a a and c的变异性。亮度，温度和体积排放量在不同的活性水平上有所不同。将这些X射线数据与即将到来的HST紫外线观测结合在一起，将允许对恒星的EUV光谱进行差分排放度量（DEM）估计，从而促进岩石行星气氛的建模。
JWST will be able to observe the atmospheres of rocky planets transiting nearby M dwarfs. The M dwarf triple star system LTT 1445, at a distance of 6.86 pc, hosts some of the nearest rocky terrestrial planets. These planets most likely orbit the M 3.5V star LTT 1445A. During a 28.6 ksec Chandra ACIS-S3 observation we have i) spatially resolved and detected all three stars in the LTT 1445 system, ii) measured the X-ray luminosity of the individual stars, including LTT 1445A, for the first time, iii) studied the flux variability of the X-ray sources and found strong variability from the A and C components, and iv) investigated how the coronal luminosities, temperatures and volume emission measures vary at different activity levels. Combining these X-ray data with upcoming HST ultraviolet observations will allow a differential emission measure (DEM) estimation of the star's EUV spectrum, thereby facilitating modeling of the rocky planets' atmospheres.
