Chemical spots and their dynamical evolution on HgMn stars

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, w...

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Bibliographic Details
Published in:arXiv.org 2010-10
Main Authors: Korhonen, Heidi, Hubrig, Swetlana, Briquet, Maryline, Gonzalez, Federico, Savanov, Igor
Format: Article
Language:English
Subjects:
B stars
Magnetic fields
Organic chemistry
Peculiar stars
Stellar evolution
Stellar magnetic fields
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1010.3509