Polar branches of stellar activity waves: Dynamo models

被引：1

作者：

Sokoloff, D. D. ^{[1
]}

Lanza, A. F. ^{[2
]}

Moss, D. L. ^{[3
]}

Tarbeeva, S. M. ^{[4
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia

[2] INAF, Osservatorio Astrofis Catania, I-95123 Catania, Italy

[3] Univ Manchester, Sch Math, Manchester M13 9PL, Lancs, England

[4] IZMIRAN, Troitsk 142190, Moscow Region, Russia

来源：

ASTRONOMISCHE NACHRICHTEN | 2011年 / 332卷 / 9-10期

关键词：

binaries: close; magnetohydrodynamics (MHD); stars: activity; stars: individual (HR 1099); stars: magnetic fields; MAGNETIC-FIELDS; V711; TAURI; STARS; SOLAR; TRANSPORT; HR-1099; CYCLES; SHEAR; CAPS;

D O I：

10.1002/asna.201111603

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Stellar activity data provide evidence that some activity wave branches propagate polewards rather than equatorwards (the latter being the solar case). This evidence is especially pronounced for the well-observed subgiant HR 1099. For this star, the polar branch seems to coexist with an equatorward branch which propagates through more or less the same latitudinal domain. Stellar dynamo theory allows poleward propagating dynamo waves for certain governing parameters. We discuss the importance of the choice of dynamo governing parameters in fitting the phenomenology of HR 1099. (C) 2011 WILEY-VCH Verlag GmbH&Co. KGaA, Weinheim

引用

页码：872 / 875

页数：4

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