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A WISE Survey of New Star Clusters in the Central Plane Region of the Milky Way

机译:WISE对银河系中部平面新星团的观测

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We present the discovery of new star clusters in the central plane region ( and ) of the Milky Way. In order to overcome the extinction problem and the spatial limit of previous surveys, we use the Wide-field Infrared Survey Explorer (WISE) data to find clusters. We also use other infrared survey data in the archive for additional analysis. We find 923 new clusters, of which 202 clusters are embedded clusters. These clusters are concentrated toward the Galactic plane and show a symmetric distribution with respect to the Galactic latitude. The embedded clusters show a stronger concentration to the Galactic plane than the nonembedded clusters. The new clusters are found more in the first Galactic quadrant, while previously known clusters are found more in the fourth Galactic quadrant. The spatial distribution of the combined sample of known clusters and new clusters is approximately symmetric with respect to the Galactic longitude. We estimate reddenings, distances, and relative ages of the 15 class A clusters using theoretical isochrones. Ten of them are relatively old (age >800 Myr) and five are young (age ≈4 Myr).
机译:我们介绍了在银河系中央平面区域(和)发现新星团的过程。为了克服以前的调查的灭绝问题和空间限制,我们使用了广域红外调查资源管理器(WISE)数据来查找聚类。我们还将存档中的其他红外测量数据用于其他分析。我们发现923个新集群,其中202个集群是嵌入式集群。这些星团朝向银河平面集中,并相对于银河纬度显示对称分布。嵌入的星团比未嵌入的星团对银河平面的集中度更高。在第一银河象限中发现更多新星团,而在第四银河象限中发现更多先前的星团。已知星团和新星团的组合样本的空间分布相对于银河经度大致对称。我们使用理论等时线估计15个A类星团的变红,距离和相对年龄。其中有十个年龄相对较大(年龄> 800 Myr),而五个则相对年轻(年龄≈4Myr)。

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