Reference : Chemical spots and their dynamical evolution on HgMn stars
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Chemical spots and their dynamical evolution on HgMn stars
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 mailto [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]
The Physics of Sun and Star Spots, Proceedings of the International Astronomical Union, IAU Symposium, Volume 273
IAU Symposium 273, The Physics of Sun and Star Spots
from 22-08-2010 to 26-08-2010
[en] Stars: atmospheres ; chemically peculiar ; early-type ; magnetic fields ; spots
[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.

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