Bibcode
Kholtygin, A. F.; Castro, N.; Fossati, L.; Hubrig, S.; Langer, N.; Morel, T.; 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.; Mathys, G.; Piskunov, A.; Reisenegger, A.; Spruit, H.; Yoon, S.-C.
Bibliographical reference
Physics and Evolution of Magnetic and Related Stars, ASP Vol. 494 Proceedings of a conference held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 25–31 August 2014. Edited by Yu. Yu. Balega, I. I. Romanyuk, and D. O. Kudryavtsev. San Francisco: Astronomical Society of the Pacific, 2015, p.79
Advertised on:
4
2015
Citations
3
Refereed citations
2
Description
The B fields in OB stars (BOB) survey is an ESO large program 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 the FORS2 and HARPSpol. Our
preliminary results indicate that the fraction of magnetic OB stars with
an organized, detectable field is small. 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 boundary
of the field strength) and the discovery of some remarkable objects.