ICATE   21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
HgMn Stars: Cornerstones for our Understanding of Late B-type Multiple Star Formation
Autor/es:
SCHÖLLER, M.; HUBRIG, S.; CORREIA, S.; ILYIN, I.; GONZÁLEZ, J.F.
Revista:
Central European Astrophysical Bulletin
Editorial:
University of Zagreb
Referencias:
Lugar: Zagreb; Año: 2013 vol. 39 p. 369 - 379
ISSN:
1845-8319
Resumen:
The most distinctive feature of HgMn stars is the extreme overabundance
of heavy elements in their atmospheres. Furthermore, they show chemical
horizontal and vertical inhomogeneities and kG mean quadratic magnetic
fields. The topology of these magnetic fields should be rather complex,
as we measure only weak mean longitudinal magnetic fields. The
connection between these features and their membership in binary and
multiple systems is supported by our observations during the last
decade. The most important result achieved in our studies of a large
sample of late B-type primaries in spectroscopic binaries and visual
multiples is the finding that the vast majority of slowly rotating late
B-type stars formed in binary systems with v sin i < 70 km s^{-1} and
orbital periods between 3 and 20 days become HgMn stars.