M82紫外发射区的年龄和消光
Age and Extinction of the Ultraviolet Emitting Regions in M82
摘要：
M82星系一直是几项研究的主题，基本上是因为它相对接近银河系，并且显示出强烈的恒星形成活动。利用M82的多波段图像，我们确定了位于M82的核和盘中强紫外辐射区的恒星星族的年龄和消光。我们还利用M82的紫外图像和它的星团的物理性质来测量星团对探测到的紫外光通量的贡献。我们发现，位于核区域的集群发射所有观察到的紫外线通量，而磁盘的集群发射不到10%。根据这项工作的结果，我们可以推断位于M82星盘中的场星在诞生时可能是一个星团的一部分。
英文摘要：
The M82 galaxy has been the subject of several studies basically because it is relatively close to to the Milky Way and it displays a strong star formation activity. Using multi-band images of M82 we have determined the age and extinction of the stellar population located in regions with strong UV emission, these region are in the nucleus and the disk of M82. We also have employed the UV images of M82 and the physical properties of its stellar clusters to measure the contribution of the clusters to the detected UV flux. We found that clusters located in the nuclear regions are emitting all the observed UV flux, whereas clusters of the disk emit less than ~10%. Based on the results obtained from this work we can infer that the field stars located in the disk of M82 could have been part of a stellar cluster when they were born.
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