在大质量紧密双星系统中快速旋转的经典be星的形成

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2023-11-01 DOI:10.1088/1674-4527/ad089e

Evgeny Staritsin

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引用次数: 0

摘要

摘要本文研究了一个紧密双星系统中质量吸积恒星在赫茨普龙隙中通过第一阶段质量交换的自旋上升过程。在吸积恒星内部，角动量由经向环流和剪切湍流携带。环流将进入吸积体的角动量的一部分带到吸积体的表面。角动量到达吸积体的速率越大，这部分就越大。我们假定这部分角动量可以被远离吸积体的圆盘移走。如果进入吸积体的物质的角动量大于开普勒值的一半，则吸积体在质量交换阶段获得的角动量不依赖于角动量的到达速率。吸积体可能在质量交换结束后立即具有Be-star的特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Formation of a rapidly rotating classical Be-star in a massive close binary system

Abstract This paper investigates the spin-up of a mass-accreting star in a close binary system passing through the first stage of mass exchange in the Hertzsprung gap. Inside an accreting star, angular momentum is carried by meridional circulation and shear turbulence. The circulation carries part of the angular momentum entering the accretor to its surface. The greater the rate of arrival of angular momentum in the accretor is, the greater this part. It is assumed that this part of the angular momentum can be removed by the disk further from the accretor. If the angular momentum in the matter entering the accretor is more than half the Keplerian value, then the angular momentum obtained by the accretor during mass exchange stage does not depend on the rate of arrival of angular momentum. The accretor may have the characteristics of a Be-star immediately after the end of mass exchange.

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来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

期刊介绍： Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics: -large-scale structure of universe formation and evolution of galaxies- high-energy and cataclysmic processes in astrophysics- formation and evolution of stars- astrogeodynamics- solar magnetic activity and heliogeospace environments- dynamics of celestial bodies in the solar system and artificial bodies- space observation and exploration- new astronomical techniques and methods