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arXiv 2308.04546astro-ph.GA
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统一星团目录:迈向全面且同质的星团数据库

The Unified Cluster Catalogue: towards a comprehensive and homogeneous database of stellar clusters

G. I. Perren, M. S. Pera, H. D. Navone, R. A. Vázquez

AI总结:

本文介绍了目前最大、列出近14000个天体的统一星团目录,采用结合恒星坐标、视差和自行等参数的新颖概率成员判定算法处理Gaia DR3数据,识别出超百万成员星,并配有公开网站以简化星团搜索与探索。

摘要:

我们介绍了统一星团目录,这是目前最大的星团目录,现列出近14000个天体。在此次初始发布中,它仅包含银河系疏散星团,计划在未来的更新中纳入其他天体。每个星团均使用一种新颖的概率成员判定算法进行处理,该算法将每颗恒星的坐标、视差、自行及其相关不确定性纳入概率分配过程。我们采用了亮度达G星等20的Gaia DR3数据,从而识别出超过一百万个可能的成员星。该目录配有一个公开网站,旨在简化星团的搜索与数据探索。访问网址为https://ucc.ar。

英文摘要:

We introduce the Unified Cluster Catalogue, the largest catalogue of stellar clusters currently listing nearly 14000 objects. In this initial release it exclusively contains Milky Way open clusters, with plans to include other objects in future updates. Each cluster is processed using a novel probability membership algorithm, which incorporates the coordinates, parallax, proper motions, and their associated uncertainties for each star into the probability assignment process. We employ Gaia DR3 data up to a G magnitude of 20, resulting in the identification of over a million probable members. The catalogue is accompanied by a publicly accessible website designed to simplify the search and data exploration of stellar clusters. The website can be accessed at https://ucc.ar.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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