Magnetic, chemical and rotational properties of the Herbig Ae/Be binary system HD 72106

被引：0

作者：

Folsom, C. P. ^{[1
,2
,3
]}

Wade, G. A. ^{[2
]}

Kochukhov, O. ^{[4
]}

Alecian, E. ^{[2
]}

Catala, C. ^{[5
]}

Bagnulo, S. ^{[1
]}

Landstreet, J. D. ^{[6
]}

Hanes, D. A. ^{[3
]}

机构：

[1] Armagh Observ, Coll Hill, Armagh BT61 9DG, North Ireland

[2] Royal Mil Coll Canada, Dept Phys, Kingston, ON K7K 7B4, Canada

[3] Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada

[4] Uppsala Univ, Dept Astron & Space Phys, S-75120 Uppsala, Sweden

[5] Observ Paris, LESIA, F-92195 Meudon, France

[6] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

来源：

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

关键词：

stars : abundances; stars : magnetic fields; stars : chemically peculiar; stars : pre-main sequence; stars : individual : HD 72106;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently, strong, globally-ordered magnetic fields have been detected in some Herbig Ae and Be (HAeBe) stars, suggesting a possible evolutionary connection to main sequence magnetic chemically peculiar Ap and Bp stars. We have undertaken a detailed study of the binary system HD 72106, which contains a B9 magnetic primary and a HAeBe secondary, using the ESPaDOnS spectropolarimeter mounted on the CFHT. A careful analysis of the very young primary reveals that it has an approximately dipolar magnetic field geometry, strong chemical peculiarities, and strong surface chemical abundance inhomogeneities. Thus the primary is very similar to an Ap/Bp star despite having completed less then 1.5% of its main sequence life, and possible still being on the pre-main sequence. In contrast, a similar analysis of the secondary reveals solar chemical abundances and no magnetic field.

引用

页码：245 / 250

页数：6

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