Activity on a Li-rich giant: DI Psc revisited. Issue Volume 9:Issue S302(2013) (7th August 2014)

• Record Type: Journal Article
• Authors: Kriskovics, Levente; Kővári, Zsolt; Vida, Krisztián; Oláh, Katalin
• Editors: Petit, Pascal; Jardine, Moira; Spruit, Hendrik C.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 9:Issue S302(2013)
• Page Start: 383
• Page End: 384
• Publication Date: 2014-08-07
• Subjects: stars: activity, -- stars: imaging, -- stars: individual (DI Psc), -- stars: spots, -- stars: late-type; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921314002567
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We present a new Doppler imaging study for the Li-rich single K-giant DI Psc. Surface temperature maps are reconstructed for two subsequent rotation cycles. From the time evolution of the spot distribution antisolar-type differential rotation pattern is revealed. We show marks of non-uniform Li-abundance as well. The possible connection between the current evolutionary phase of the star and its magnetic activity is briefly discussed.