{"title":"Models of Magnetospheric Accretion onto Young Stars in the Absence of Ionization Equilibrium","authors":"D. V. Dmitriev, V. P. Grinin","doi":"10.1134/S1063773722010030","DOIUrl":null,"url":null,"abstract":"<p>The formation of hydrogen emission lines in the magnetospheres of young stars is considered. The magnetosphere is assumed to be formed by a dipole magnetic field whose axis is aligned with the stellar rotation axis. The radiative transfer in spectral lines is considered in the Sobolev approximation with nonlocal radiative coupling. We have taken into account the effect of gas ionization fraction transfer when moving in the magnetosphere, demonstrated its influence on the emission spectrum of the magnetosphere for the first time, and estimated the accretion rate from the <span>\\(\\mathrm{H\\alpha}\\)</span> line. We have shown that at low accretion rates <span>\\(\\dot{M}\\lesssim 10^{-9}\\ {M_{\\odot}}\\)</span> yr<span>\\({}^{-1}\\)</span> this effect can exert a significant influence on the model intensities.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063773722010030","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The formation of hydrogen emission lines in the magnetospheres of young stars is considered. The magnetosphere is assumed to be formed by a dipole magnetic field whose axis is aligned with the stellar rotation axis. The radiative transfer in spectral lines is considered in the Sobolev approximation with nonlocal radiative coupling. We have taken into account the effect of gas ionization fraction transfer when moving in the magnetosphere, demonstrated its influence on the emission spectrum of the magnetosphere for the first time, and estimated the accretion rate from the \(\mathrm{H\alpha}\) line. We have shown that at low accretion rates \(\dot{M}\lesssim 10^{-9}\ {M_{\odot}}\) yr\({}^{-1}\) this effect can exert a significant influence on the model intensities.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
