Bibcode
Morel, T.; Castro, N.; Fossati, L.; Hubrig, S.; Langer, N.; Przybilla, N.; Schöller, M.; Carroll, T.; Ilyin, I.; Irrgang, A.; Oskinova, L.; Schneider, F. R. N.; Simon Díaz, S.; Briquet, M.; González, J. F.; Kharchenko, N.; Nieva, M.-F.; Scholz, R.-D.; de Koter, A.; Hamann, W.-R.; Herrero, A.; Apellániz, J. Maíz; Sana, H.; Arlt, R.; Barbá, R.; Dufton, P.; Kholtygin, A.; Mathys, G.; Piskunov, A.; Reisenegger, A.; Spruit, H.; Yoon, S.-C.
Referencia bibliográfica
New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry, Proceedings of the International Astronomical Union, IAU Symposium, Volume 307, pp. 342-347
Fecha de publicación:
1
2015
Número de citas
60
Número de citas referidas
46
Descripción
The B fields in OB stars (BOB) survey is an ESO large programme
collecting spectropolarimetric observations for a large number of
early-type stars in order to study the occurrence rate, properties, and
ultimately the origin of magnetic fields in massive stars. As of July
2014, a total of 98 objects were observed over 20 nights with FORS2 and
HARPSpol. Our preliminary results indicate that the fraction of magnetic
OB stars with an organised, detectable field is low. This conclusion,
now independently reached by two different surveys, has profound
implications for any theoretical model attempting to explain the field
formation in these objects. We discuss in this contribution some
important issues addressed by our observations (e.g., the lower bound of
the field strength) and the discovery of some remarkable objects.