Reference : Chemical spots and their dynamical evolution on HgMn stars

	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/110794

Title :	Chemical spots and their dynamical evolution on HgMn stars
Language :	English
Author, co-author :	Korhonen, Heidi [European Southern Observatory, Karl-Schwarzschild-Str 2, D-85748, Garching bei München, Germany]
	Hubrig, Swetlana [Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany]
	Briquet, Maryline [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie]
	González, Federico [Instituto de Ciencias Astronomicas, de la Tierra, y del Espacio (ICATE), 5400 San Juan, Argentina]
	Savanov, Igor [Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya 48, Moscow 119017, Russia]
Publication date :	1-Aug-2011
Main document title :	The Physics of Sun and Star Spots, Proceedings of the International Astronomical Union, IAU Symposium, Volume 273
Audience :	International
Event name :	IAU Symposium 273, The Physics of Sun and Star Spots
Event date :	from 22-08-2010 to 26-08-2010
Keywords :	[en] Stars: atmospheres ; chemically peculiar ; early-type ; magnetic fields ; spots
Abstract :	[en] Our recent studies of late B-type stars with HgMn peculiarity revealed for the first time the presence of fast dynamical evolution of chemical spots on their surfaces. These observations suggest a hitherto unknown physical process operating in the stars with radiative outer envelopes. Furthermore, we have also discovered existence of magnetic fields on these stars that have up to now been thought to be non-magnetic. Here we will discuss the dynamical spot evolution on HD 11753 and our new results on magnetic fields on AR Aur.
Permalink :	http://hdl.handle.net/2268/110794
DOI :	10.1017/S1743921311015109
Other URL :	http://esoads.eso.org/abs/2011IAUS..273..116K
Commentary :	http://de.arxiv.org/abs/1010.3509

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access 1010.3509v1.pdf Publisher postprint 240.39 kB View/Open

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