{"title":"根据盖亚DR3测定的距离太阳300 pc以内高速恒星的运动学特性","authors":"A. V. Tutukov, N. V. Chupina, S. V. Vereshchagin","doi":"10.1134/S1063772923120120","DOIUrl":null,"url":null,"abstract":"<p>The kinematics of stars from the solar neighborhood with a radius of 300 pc has been studied using the Gaia DR3 data. Our sample includes <i>n</i> = 970 171 stars—AG300 (A—ensemble, G—Gaia, 300—radius of the studied zone in pc). The kinematics of these stars reflects the morphology of the main stellar populations of the Galaxy: the stellar disk, bulge, halo, and stellar corona of a supermassive black hole (SMBH). The presence of stars in AG300 with velocities exceeding the escape velocity from the Galaxy indicates the presence in the circumsolar space of extragalactic stars belonging to the stellar component of the local cluster of galaxies. It is shown that the known mechanisms of acceleration of the spatial motion of stars make it possible to create a stellar halo of galaxies, a stellar corona of SMBH in its nucleus, an intergalactic stellar medium of galaxy clusters, and spaces between galaxy clusters. The AG300 catalog makes it possible to identify representatives of all named components.</p>","PeriodicalId":55440,"journal":{"name":"Astronomy Reports","volume":"67 12","pages":"1418 - 1441"},"PeriodicalIF":1.1000,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Kinematics of High-Velocity Stars within 300 pc from the Sun according to Gaia DR3\",\"authors\":\"A. V. Tutukov, N. V. Chupina, S. V. Vereshchagin\",\"doi\":\"10.1134/S1063772923120120\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The kinematics of stars from the solar neighborhood with a radius of 300 pc has been studied using the Gaia DR3 data. Our sample includes <i>n</i> = 970 171 stars—AG300 (A—ensemble, G—Gaia, 300—radius of the studied zone in pc). The kinematics of these stars reflects the morphology of the main stellar populations of the Galaxy: the stellar disk, bulge, halo, and stellar corona of a supermassive black hole (SMBH). The presence of stars in AG300 with velocities exceeding the escape velocity from the Galaxy indicates the presence in the circumsolar space of extragalactic stars belonging to the stellar component of the local cluster of galaxies. It is shown that the known mechanisms of acceleration of the spatial motion of stars make it possible to create a stellar halo of galaxies, a stellar corona of SMBH in its nucleus, an intergalactic stellar medium of galaxy clusters, and spaces between galaxy clusters. The AG300 catalog makes it possible to identify representatives of all named components.</p>\",\"PeriodicalId\":55440,\"journal\":{\"name\":\"Astronomy Reports\",\"volume\":\"67 12\",\"pages\":\"1418 - 1441\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-02-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Astronomy Reports\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1063772923120120\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astronomy Reports","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063772923120120","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
摘要
摘要利用 Gaia DR3 数据研究了半径为 300 pc 的太阳附近恒星的运动学。我们的样本包括 n = 970 171 颗恒星-AG300（A-集合，G-盖亚，300-研究区半径，以 pc 为单位）。这些恒星的运动学特征反映了银河系主要恒星群的形态：恒星盘、隆起、光晕和超大质量黑洞（SMBH）的恒星日冕。AG300 中存在速度超过银河逃逸速度的恒星，这表明在环太阳系空间中存在属于本星系团恒星部分的银河系外恒星。研究表明，已知的恒星空间运动加速机制可以产生星系的恒星晕、SMBH 星核的恒星日冕、星系团的星系间恒星介质以及星系团之间的空间。AG300 星表可以识别所有命名成分的代表。
Kinematics of High-Velocity Stars within 300 pc from the Sun according to Gaia DR3
The kinematics of stars from the solar neighborhood with a radius of 300 pc has been studied using the Gaia DR3 data. Our sample includes n = 970 171 stars—AG300 (A—ensemble, G—Gaia, 300—radius of the studied zone in pc). The kinematics of these stars reflects the morphology of the main stellar populations of the Galaxy: the stellar disk, bulge, halo, and stellar corona of a supermassive black hole (SMBH). The presence of stars in AG300 with velocities exceeding the escape velocity from the Galaxy indicates the presence in the circumsolar space of extragalactic stars belonging to the stellar component of the local cluster of galaxies. It is shown that the known mechanisms of acceleration of the spatial motion of stars make it possible to create a stellar halo of galaxies, a stellar corona of SMBH in its nucleus, an intergalactic stellar medium of galaxy clusters, and spaces between galaxy clusters. The AG300 catalog makes it possible to identify representatives of all named components.
期刊介绍：
Astronomy Reports is an international peer reviewed journal that publishes original papers on astronomical topics, including theoretical and observational astrophysics, physics of the Sun, planetary astrophysics, radio astronomy, stellar astronomy, celestial mechanics, and astronomy methods and instrumentation.
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