{"title":"The luminosity function and the H-R diagram of white dwarfs","authors":"He Xiang-tao, Xiao Xing-hua","doi":"10.1016/0146-6364(80)90029-8","DOIUrl":null,"url":null,"abstract":"<div><p>We have analysed spectroscopic data of 461 white dwarfs and obtained preliminary results as follows: (1) At present, the observed luminosity function agrees about equally well with the crystallization theory as with the non-crystallization theory. (2) White dwarfs appear to form an unbroken sequence on the H-R diagram. (3) The different locations on the diagram are mainly due to differences in temperature and in the degree of internal mixing. Evolution from early to late spectral types may exist.</p></div>","PeriodicalId":100241,"journal":{"name":"Chinese Astronomy","volume":"4 4","pages":"Pages 380-383"},"PeriodicalIF":0.0000,"publicationDate":"1980-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-6364(80)90029-8","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146636480900298","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We have analysed spectroscopic data of 461 white dwarfs and obtained preliminary results as follows: (1) At present, the observed luminosity function agrees about equally well with the crystallization theory as with the non-crystallization theory. (2) White dwarfs appear to form an unbroken sequence on the H-R diagram. (3) The different locations on the diagram are mainly due to differences in temperature and in the degree of internal mixing. Evolution from early to late spectral types may exist.
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