Magnetic fields in single late-type giants in the Solar vicinity: How common is magnetic activity on the giant branches?

• Main Authors: Konstantinova-Antova, Renada, Aurière, Michel, Charbonnel, Corinne, Drake, Natalia, Wade, Gregg, Tsvetkova, Svetla, Petit, Pascal, Schröder, Klaus-Peter, Lèbre, Agnes
• Language: English
• Published: 2017
• Subjects: Donati; narval
• Online Access: http://doc.rero.ch/record/292145/files/S174392131400252X.pdf

We present our first results on a new sample containing all single G, K and M giants down to V = 4 mag in the Solar vicinity, suitable for spectropolarimetric (Stokes V) observations with Narval at TBL, France. For detection and measurement of the magnetic field (MF), the Least Squares Deconvolution...