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Mon. Not. R. Astron. Soc. 000, 111 (2010) Printed 18 May 2010 (MN LATEX style file v2.2) Magnetic field, chemical composition and line profile
 

Summary: Mon. Not. R. Astron. Soc. 000, 111 (2010) Printed 18 May 2010 (MN LATEX style file v2.2)
Magnetic field, chemical composition and line profile
variability of the peculiar eclipsing binary star AR Aur
C.P. Folsom1
, O. Kochukhov2
, G.A. Wade3
, J. Silvester3,4
, S. Bagnulo1
1Armagh Observatory, College Hill, Armagh Northern Ireland BT61 9DG
2Department of Astronomy and Space Physics, Uppsala University, 751 20 Uppsala, Sweden
3Department of Physics, Royal Military College of Canada, P.O. Box 17000, Station `Forces', Kingston, Ontario, Canada, K7K 7B4
4Department of Physics, Engineering Physics & Astronomy, Queen's University, Kingston, Ontario, Canada, K7L 3N6
Received: 2010; Accepted: 2010
ABSTRACT
AR Aur is the only eclipsing binary known to contain a HgMn star, making it an
ideal case for a detailed study of the HgMn phenomenon. HgMn stars are a poorly
understood class of chemically peculiar stars, which have traditionally been thought
not to possess significant magnetic fields. However, the recent discovery of line profile
variability in some HgMn stars, apparently attributable to surface abundance patches,
has brought this belief into question. In this paper we investigate the chemical abun-

  

Source: Armagh Observatory

 

Collections: Physics