Magnetic observations of pulsating B and Be stars with ESPaDOnS and Narval

International audience Discoveries of magnetic fields in pulsating B and Be stars have been claimed from low-resolution spectropolarimetric observations with FORS1 at VLT. We used the new generation of high-resolution spectropolarimeters, ESPaDOnS at CFHT and NARVAL at TBL, to check for the existenc...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union
Main Authors: Silvester, James, Neiner, Coralie, Henrichs, Hubertus F., Wade, Gregg, Alecian, Evelyne, Petit, Veronique
Other Authors: Department of Physics, Engineering Physics and Astronomy, Queen's University, Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique stellaire et galactique, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Astronomical Institute Anton Pannekoek, University of Amsterdam, Department of Physics, Royal Military College of Canada, Département de Physique, Université de Montréal, Strassmeier, Klaus G.; Kosovichev, Alexander G.; Beckman, John E.
Format: Conference Object
Language:English
Published: HAL CCSD 2008
Subjects:
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
narval
Online Access:https://hal.science/hal-03734446
https://doi.org/10.1017/S1743921309030816
Description
Summary:International audience Discoveries of magnetic fields in pulsating B and Be stars have been claimed from low-resolution spectropolarimetric observations with FORS1 at VLT. We used the new generation of high-resolution spectropolarimeters, ESPaDOnS at CFHT and NARVAL at TBL, to check for the existence of these fields. We find that most of the claimed magnetic stars do not host a magnetic field. This work shows the importance of a critical analysis of FORS1 data when searching for weak magnetic fields in early-type stars and the advantage of using ESPaDOnS and NARVAL to study such type of stars.

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