EAS Publications Series

Issue		EAS Publications Series Volume 9, 2003 Magnetism and Activity of the Sun and Stars
Page(s)		97
DOI		10.1051/eas:2003090

Magnetism and Activity of the Sun and Stars
J. Arnaud and N. Meunier (eds)
EAS Publications Series, Vol. 9, 2003
DOI: 10.1051/eas:2003090

Stellar polarimetry with ESPaDOnS

P. Petit¹, J.-F. Donati² and the ESPaDOnS project team³

¹ Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, 31400 Toulouse, France & Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
² Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, 31400 Toulouse, France
³ Observatoire Midi-Pyrénées and Observatoire de Paris-Meudon, France, University of Western Ontario, Canada, ESA, The Netherlands

petit@astro.up.pt
donati@ast.obs-mip.fr

Abstract
ESPaDOnS is a new-generation cross-dispersed échelle spectropolarimeter, the commissioning phase of which is scheduled at the Canada-France-Hawaii Telescope (CFHT) for autumn 2003. This instrument will provide full coverage of the optical domain (370 nm to 1000 nm) in all polarization states (circular and linear) at a resolving power of about 70 000, with a peak efficiency of 20% (telescope and detector included). It includes a bench-mounted spectrograph, fiber-fed from a Cassegrain-mounted module including all polarimetric and calibration facilities.

ESPaDOnS should be the most powerful tool dedicated to stellar spectropolarimetry, therefore opening unprecedented perspectives for major issues of stellar physics, from studies of stellar interiors to investigations of stellar atmospheres, stellar surfaces, stellar magnetic fields, and to observations of circumstellar environments and extra-solar planets.

What is OpenURL?