Evolution of global magnetic fields in main sequence A and B stars

被引：0

作者：

Landstreet, J. D. ^{[1
]}

Bagnulo, S. ^{[2
]}

Andretta, V. ^{[3
]}

Fossati, L. ^{[4
]}

Mason, E. ^{[5
]}

Silaj, J. ^{[1
]}

Wade, G. A. ^{[6
]}

机构：

[1] Univ Western Ontario, London, ON, Canada

[2] Armagh Observ, Armagh BT61 9DG, North Ireland

[3] INAF, Naples, Italy

[4] Univ Vienna, Inst Astron, A-1180 Vienna, Austria

[5] ESO, Santiago, Chile

[6] Royal Mil Coll Canada, Kingston, ON, Canada

来源：

CONTRIBUTIONS OF THE ASTRONOMICAL OBSERVATORY SKALNATE PLESO | 2008年 / 38卷 / 02期

关键词：

stars : chemically peculiar; stars : evolution; stars : magnetic fields; open clusters and associations : general;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The (presumably fossil) magnetic fields in magnetic Ap stars are expected to evolve as the stars pass through the main sequence. Virtually no observational evidence currently constrains this process, because ages of field Ap stars cannot be determined accurately at present. To provide data about field evolution as a function of age, we are studying the fields of Ap stars in clusters. It is found that the fields, and probably the emergent magnetic flux, decline with increasing age for Ap stars in the range of 2 - 5 M-circle dot.

引用

页码：391 / 396

页数：6

共 13 条

[1] Searching for links between magnetic fields and stellar evolution I. A survey of magnetic fields in open cluster A- and B-type stars with FORS1 [J].