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.; Simón 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. M.; Sana, H.; Arlt, R.; Barbá, R.; Dufton, P.; Kholtygin, A.; Mathys, G.; Piskunov, A.; Reisenegger, A.; Spruit, H.; Yoon, S.-C.
Bibliographical reference
The Messenger, vol. 157, p. 27-31
Advertised on:
9
2014
Citations
36
Refereed citations
29
Description
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. A total of 98
objects was observed over 20 nights with FORS2 and HARPSpol to July
2014. 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 stars. We also discuss some important issues
addressed by our observations (e.g., the lower bound of the field
strength) and the discovery of some remarkable objects.
Related projects
The IACOB project: A new Era in the Study of Galactic OB Stars
IACOB is an ambitious long-term project whose main scientific goal is to provide an unprecedented empirical overview of the main physical properties of Galactic massive O- and B-type stars which can be used as definitive anchor point for our theories of stellar atmospheres, winds, interiors and evolution of massive stars
Sergio
Simón Díaz