Chemical surface inhomogeneities in late B-type stars with Hg and Mn peculiarity: I. Spot evolution in HD 11753 on short and long time scales; ; Briquet, Maryline et alin Astronomy and Astrophysics (in press) Detailed reference viewed: 14 (1 ULg) Chemical spots and their dynamical evolution on HgMn stars; ; Briquet, Maryline et alin The Physics of Sun and Star Spots, Proceedings of the International Astronomical Union, IAU Symposium, Volume 273 (2011, August 01) 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 ... [more ▼] 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. [less ▲] Detailed reference viewed: 16 (11 ULg) |
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