Magnetic cycles of Sun-like stars with different levels of coronal and chromospheric activity - comparison with the Sun

被引：4

作者：

Shimanovskaya, Elena ^{[1
]}

Bruevich, Vasiliy ^{[1
]}

Bruevich, Elena ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Univ Sky Pr 13, Moscow 119992, Russia

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2016年 / 16卷 / 09期

关键词：

Sun: activity; Sun-like stars: activity; ACTIVITY-ROTATION RELATIONSHIP; MAIN-SEQUENCE STARS; SOLAR-TYPE STARS; CA-II EMISSION; CHANGING CYCLES; PLANET SEARCH; TIME SCALES; AGE; MULTIPLE; EINSTEIN;

D O I：

10.1088/1674-4527/16/9/148

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The atmospheric activity of the Sun and Sun-like stars is analyzed involving observations from the HK-project at the Mount Wilson Observatory, the California and Carnegie Planet Search Program at the Keck and Lick Observatories and the Magellan Planet Search Program at the Las Campanas Observatory. We show that for stars of F, G and K spectral classes, the cyclic activity, similar to the 11-yr solar cycle, is different: it becomes more prominent in K-stars. Comparative study of Sun-like stars with different levels of chromospheric and coronal activity confirms that the Sun belongs to stars with a low level of chromospheric activity and stands apart among these stars by its minimum level of coronal radiation and minimum level of variations in photospheric flux.

引用

页数：14

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