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

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

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iaus..259..391s&link_type=abstract

Cosmic Magnetic Fields: From Planets, to Stars and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium,

Astronomy and Astrophysics

Astronomy

Stars: Magnetic Fields, Techniques: Polarimetric, Stars: Early-Type, Stars: Emission-Line, Be

Scientific paper

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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