The B Fields in OB Stars (BOB) Survey

Authors
  • A.F. Kholtygin
  • N. Castro
  • L. Fossati
  • S. Hubrig
  • N. Langer
  • T. Morel
  • N. Przybilla
  • M. Schöller
  • T. Carroll
  • I. Ilyin
  • A. Irrgang
  • L. Oskinova
  • F.R.N. Schneider
  • S. Simon Díaz
  • M. Briquet
  • J.F. González
  • N. Kharchenko
  • M.-F. Nieva
  • R.-D. Scholz
  • A. de Koter
  • W.-R. Hamann
  • A. Herrero
  • J. Maíz Apellániz
  • H. Sana
  • R. Arlt
  • R. Barbá
  • P. Dufton
  • G. Mathys
  • A. Piskunov
  • A. Reisenegger
  • H. Spruit
  • S.-C. Yoon
Publication date 2015
Host editors
  • Y.Y. Balega
  • I.I. Romanyuk
  • D.O. Kudryavtsev
Book title Physics and Evolution of Magnetic and Related Stars
Book subtitle proceedings of a conference held at Special Astrophysical Observatory, Nizhny Arkhyz, Russia, 25-31 August 2014
ISBN
  • 9781583818725
ISBN (electronic)
  • 9781583818732
Series Astronomical Society of the Pacific conference series
Event Physics and Evolution of Magnetic and Related Stars
Pages (from-to) 79-85
Publisher San Francisco: Astronomical Society of the Pacific
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract
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.
Document type Conference contribution
Language English
Published at http://aspbooks.org/custom/publications/paper/494-0079.html
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