{"title":"On the dispersion of star velocities in spiral galaxies","authors":"Huang Ke-liang, Huang Jie-hao, Peng Qiu-he","doi":"10.1016/0146-6364(80)90003-1","DOIUrl":null,"url":null,"abstract":"<div><p>The variation with <em>r</em> of <em>C</em><sub><em>z</em></sub><sup>2</sup>, the dispersion of velocities in <em>z</em> is obtained by direct integration. We also obtain the variation of the radial dispersion of velocities with <em>r</em> through the stability of the density wave in a three-dimensional dishlike galaxy. In the solar neighborhood, the theoretical values of <em>C</em><sub><em>r</em></sub> and <em>C</em><sub><em>z</em></sub> are in fair agreement with the observed values. And towards the centre of the galaxies, the value of <em>C</em><sub><em>r</em></sub>/<em>C</em><sub><em>z</em></sub> approaches 1.</p></div>","PeriodicalId":100241,"journal":{"name":"Chinese Astronomy","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1980-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-6364(80)90003-1","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146636480900031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The variation with r of Cz2, the dispersion of velocities in z is obtained by direct integration. We also obtain the variation of the radial dispersion of velocities with r through the stability of the density wave in a three-dimensional dishlike galaxy. In the solar neighborhood, the theoretical values of Cr and Cz are in fair agreement with the observed values. And towards the centre of the galaxies, the value of Cr/Cz approaches 1.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
