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A Deep Photometric Survey of the Double Cluster h χ Per

机译:双星团h&χPer的深度光度测量

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We performed a deep multi-band photometric survey of the central regions of the young (~13Myr) and very rich double cluster, h & χ Persei, extending the membership down to the boundary region between stellar and sub-stellar domain (0.07M_(Sun)). We used data from CFHT (WIRCAM and MEGACAM) in I, Y, J, H and Ks bands. To select the candidate members we produced CMDs that we compared with the isochrones, and previous known members from photometric, spectroscopical, X-ray, proper motion, disk and H alpha emission studies. We selected several thousand candidate members in h & χ Persei, down to late M dwarfs in a field of view of 20 by 20 arcmin for each cluster.
机译:我们对年轻的(〜13Myr)和非常丰富的双星团h&χPersei的中心区域进行了深层多波段光度测量,将成员资格向下扩展至恒星和亚星际域之间的边界区域(0.07M_(太阳))。我们在I,Y,J,H和Ks波段中使用了CFHT(WIRCAM和MEGACAM)中的数据。为了选择候选成员,我们生成了CMD,并将其与等时线进行了比较,并从光度,光谱,X射线,适当运动,磁盘和H alpha发射研究中比较了先前已知的成员。我们在h&χPersei中选择了数千个候选成员,每个聚类的视场范围为20 x 20 arcmin,直至中晚期的M矮星。

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