Nearby Stars

在太阳附近的恒星，通常定义为25 pc的体积，是特别感兴趣的相当多的研究领域，如银河系结构，星星形成，恒星多样性，恒星大气，恒星结构和演化，和系外行星。在过去的几年里，关于当地体积的恒星含量的知识急剧增加，主要归功于精确的盖亚天体测量，但也由于红外线的几次调查，增加了许多超冷矮星。我们建议将所有这些信息放在一起，合并它并发布新版本的“邻近恒星目录”（CNS6），基于最近发布的CNS5，新的盖亚数据和许多相关的附加信息。 一个精心策划的星表，如我们所提出的，比仅仅查询盖亚数据的最接近的来源有更高的价值，因为它整合了所有的信息，包括来自其他星表的信息，提供了更多的多重性信息以及均匀的恒星参数和定义良好的完整性限制。新的“邻近恒星目录”将允许进行许多新的研究，包括多重性和质量和光度函数的研究以及与银河系结构相关的研究，它也可以作为各种任务的目标选择的基础，例如直接成像搜索系外行星。

The stars in the solar neighborhood, often defined as the volume out to 25 pc, are of special interest for rather diverse fields of study, such as Galactic structure, star formation, stellar multiplicity, stellar atmospheres, stellar structure and evolution, and exoplanets. The knowledge about the stellar content of the local volume has increased dramatically in the last years, mainly thanks to precise Gaia astrometry, but also due to several surveys in the infrared, adding many ultracool dwarfs to the tally. We propose to put together all this information, consolidate it and publish a new version of the 'Catalog of Nearby Stars' (CNS6), based on the recently published CNS5, new Gaia data, and a lot of relevant additional information. A curated catalog such as we propose is of much higher value than just a query of the Gaia data for the most nearby sources, since it consolidates all information, including that from other catalogs, provides more multiplicity information as well as homogeneous stellar parameters and well-defined completeness limits. The new 'Catalog of Nearby Stars' will allow for a multitude of new investigations, including studies of multiplicity and the mass and luminosity functions as well as of studies related to the structure of the Milky Way, and it can also serve as basis for the target selection for various missions such as direct imaging searches for exoplanets.