期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 478, 期 4, 页码 5639-5650出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sty1421
关键词
methods: numerical; stars: evolution; novae, cataclysmic variables
资金
- CAPES foundation
- Brazilian Ministry of Education [BEX 13514/13-0]
- National Science Centre, Poland [UMO-2016/21/N/ST9/02938, UMO-2016/23/B/ST9/02732]
- FONDECYT [1141269]
- CONICYT PAI (Concurso Nacional de Insercion en la Academia 2017) [Folio 79170121]
- CONICYT/FONDECYT (Programa de Iniciacion) [Folio 11170559]
- Polish Ministry of Science and Higher Education Diamond Grant Programme [0136/DIA/2014/43]
The predicted and observed space density of cataclysmic variables (CVs) has been for a long time discrepant by at least an order of magnitude. The standard model of CV evolution predicts that the vast majority of CVs should be period bouncers, whose space density has been recently measured to be rho less than or similar to 2 x 10(-5) pc(-3). We performed population synthesis of CVs using an updated version of the Binary Stellar Evolution (BSE) code for single and binary star evolution. We find that the recently suggested empirical prescription of consequential angular momentum loss (CAML) brings into agreement predicted and observed space densities of CVs and period bouncers. To progress with our understanding of CV evolution it is crucial to understand the physical mechanism behind empirical CAML. Our changes to the BSE code are also provided in details, which will allow the community to accurately model mass transfer in interacting binaries in which degenerate objects accrete from low-mass main-sequence donor stars.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据