论文标题
揭示NGC 6910中的身体状况
Unveiling the physical conditions in NGC 6910
论文作者
论文摘要
深层和宽视野光学观测以及多波长档案数据集已被用于研究群集NGC 6910的物理特性。该研究还研究了大型恒星对其环境的影响。群集的年龄，距离和红色估计为$ \ sim $ 4.5 Myr，$ 1.72 \ pm0.08 $ kpc和$ e（b-v）_ {min} = 0.95 $ mag。发现聚类区域中的质量功能坡度（$γ= -0.74 \ pm0.15 $比salpeter值（-1.35）的倾斜度（-1.35），表明存在过量的巨星数量。群集还显示出由于其形成过程而导致的群集在中央区域。可追溯到巨大的B型星（年龄范围$ 0.07-0.12 MYR）的无线电连续体团块，它们远离恒星群NGC 6910的中心（年龄$ \ sim $ 4.5 MYR），基于大量的恒星的造成的机制，占据了堆积的群体。总体而言，集群中的巨大恒星可能触发了群集中年轻的B型恒星的诞生。
Deep and wide-field optical photometric observations along with multiwavelength archival datasets have been employed to study the physical properties of the cluster NGC 6910. The study also examines the impact of massive stars to their environment. The age, distance and reddening of the cluster are estimated to be $\sim$4.5 Myr, $1.72\pm0.08$ kpc, and $ E(B-V)_{min}= 0.95$ mag, respectively. The mass function slope ($Γ= -0.74\pm0.15$ in the cluster region is found to be flatter than the Salpeter value (-1.35), indicating the presence of excess number of massive stars. The cluster also shows mass segregation towards the central region due to their formation processes. The distribution of warm dust emission is investigated towards the central region of the cluster, showing the signature of the impact of massive stars within the cluster region. Radio continuum clumps powered by massive B-type stars (age range $\sim$ 0.07-0.12 Myr) are traced, which are located away from the center of the stellar cluster NGC 6910 (age $\sim$ 4.5 Myr). Based on the values of different pressure components exerted by massive stars, the photoionized gas associated with the cluster is found to be the dominant feedback mechanism in the cluster. Overall, the massive stars in the cluster might have triggered the birth of young massive B-type stars in the cluster. This argument is supported with evidence of the observed age gradient between the cluster and the powering sources of the radio clumps.
