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 (AI PANNEKOEK), University of Amsterdam Amsterdam = Universiteit van Amsterdam (UvA), 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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