对ASCC-2的天体物理学补充。内务部大约55000颗恒星的径向速度和516个银河系疏散星团和星协的平均径向速度
Astrophysical supplements to the ASCC-2.5. Ia. Radial velocities of about 55000 stars and mean radial velocities of 516 Galactic open clusters and associations
摘要：
本文介绍了第二版天体测量径向速度表（CRVAD-2）。这是将全天250万颗恒星汇编星表（ASCC-2.5）中的恒星与径向速度总表和其他最近出版的径向速度表和星表进行交叉识别的结果。CRVAD-2包括精确的J2000赤道坐标、依巴谷系统中的自行和三角视差、约翰逊系统中的$B, V$测光、光谱类型、径向速度（RV）、54907颗ASCC-2.5恒星的多重性和变率标志。我们用CRVAD-2重新测定了363个疏散星团和星协的平均RV，并考虑了它们在ASCC-2.5中由自行和测光确定的成员。对于330个集群和协会，我们汇编了以前发表的平均RV从文献中，批判性地审查和部分修订。由此产生的疏散星团和星协径向速度表（CRVOCA）包含了大约460个疏散星团和大约60个太阳附近的恒星星协。这些数字仍然不到银河系目前已知的大约1820个物体总数的30%。年轻集群的平均RV一般比老年人更好地了解。
英文摘要：
We present the 2nd version of the Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). This is the result of the cross-identification of stars from the All-Sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5) with the General Catalogue of Radial Velocities and with other recently published radial velocity lists and catalogues. The CRVAD-2 includes accurate J2000 equatorial coordinates, proper motions and trigonometric parallaxes in the Hipparcos system, $B, V$ photometry in the Johnson system, spectral types, radial velocities (RVs), multiplicity and variability flags for 54907 ASCC-2.5 stars. We have used the CRVAD-2 for a new determination of mean RVs of 363 open clusters and stellar associations considering their established members from proper motions and photometry in the ASCC-2.5. For 330 clusters and associations we compiled previously published mean RVs from the literature, critically reviewed and partly revised them. The resulting Catalogue of Radial Velocities of Open Clusters and Associations (CRVOCA) contains about 460 open clusters and about 60 stellar associations in the Solar neighbourhood. These numbers still represent less than 30% of the total number of about 1820 objects currently known in the Galaxy. The mean RVs of young clusters are generally better known than those of older ones.
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。
