Baliunas 2011 主序星的角动量和磁矩的关系

主要内容:
mu~L^0.6

精彩摘抄:

文章信息:

· Find Similar Abstracts (with default settings below)

· Full Refereed Journal Article (PDF/Postscript)

· Full Refereed Scanned Article (GIF)

· References in the article

· Citations to the Article (72) (Citation History)

· Refereed Citations to the Article

· SIMBAD Objects (111)

· Also-Read Articles (Reads History)

·

· Translate This Page

Title:		Magnetic Field and Rotation in Lower Main-Sequence Stars: an Empirical Time-dependent Magnetic Bode's Relation?
Authors:		Baliunas, Sallie; Sokoloff, Dmitry; Soon, Willie
Publication:		Astrophysical Journal Letters v.457, p.L99 (ApJL Homepage)
Publication Date:		02/1996
Origin:		APJ
ApJ Keywords:		STARS: MAGNETIC FIELDS, STARS: ROTATION
DOI:		10.1086/309891
Bibliographic Code:		1996ApJ...457L..99B

Abstract

We find a significant correlation between the magnetic and rotational moments for a sample of 112 lower main-sequence stars. The rotational moment is calculated from measurements of the rotation period in most of the stars (not from the projected rotational velocity inferred from Doppler broadening). The magnetic moment is computed from a database of homogeneous measurements of the mean level of Ca II H and K emission fluxes sampled for most of the stars over an interval of 25 yr. The slope connecting the logarithm of the magnetic moment and the logarithm of the rotational moment is about +0.5--0.6, with a Pearson correlation coefficient of about +0.9. The scatter of points from the mean relation has a component that is natural and caused by decade-long surface variability.