Bcool

Marsden Stephen stephen.marsden@jcu.edu.au Centre for Astronomy, James Cook University Australia
Petit Pascal, Institut de Recherche en Astrophysique et Planetologie
Jeffers Sandra, Institut fur Astrophysik Gottingen
Jardine Moira, University of St. Andrews
Dintrans Boris, Institut de Recherche en Astrophysique et Planetologie
Bouvier Jerome, Laboratoire d'Astrophysique de Grenoble
Konstantinova-Antova Renada, Bulgarian Academy of Sciences
do Nascimento Jose Dias, Universidade Federal do Rio Grande do Norte
Morin Julien, Institut fur Astrophysik Gottingen


Abstract
Bcool is an international collaboration studying the magnetic activity of low-mass stars from pre-main sequence through to evolved objects. Bcool has a particular emphasis on using spectropolarimetric observations to directly characterise the magnetic fields of cool stars using tomographic imaging techniques, such as Zeeman Doppler imaging. Through such studies the Bcool collaboration aims to shed light on the operation of stellar dynamos under a range of conditions. Among other observations, Bcool has been observing a sample of 19 solar-type stars (from 0.6 to 1.4 solar masses) regularly between 2007 and 2012 using the NARVAL spectropolarimeter at the telescope Bernard Lyot (Pic du Midi, France). In this presentation I will give an overview of the Bcool project as well as the latest results from the collaboration.