Title of article
HD 232 862 : a magnetic and lithium-rich giant star
Author/Authors
A. Palacios، نويسنده , , A. Lebre، نويسنده , , J. D. Do Nascimento Jr، نويسنده , , R. Konstantinova-Antova، نويسنده , , D. Kolev، نويسنده , , M. Auriere، نويسنده , , P. de Laverny، نويسنده , , and J. R. De Medeiros، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
2
From page
347
To page
348
Abstract
Using spectropolarimetric data acquired with the ESPaDOnS and NARVAL instruments at CFHT and at TBL, we present a detailed spectral synthesis analysis of HD 232 862, a field giant classified as a G8II star hosting a magnetic field. This star is the first lithium-rich field giant hosting a magnetic field. Stellar evolution models suggest that HD 232 862 should be a 1.5 to 2.0 M_ star at the bottom of the red giant branch. Its unsually high lithium content (A(Li) = 2.45 ± 0.25 dex) is even more puzzling and challenges our understanding of the evolution of this star.
Keywords
Evolution , magnetic fields , spectropolarimetry , Stars: spectroscopy , Abundances
Journal title
Proceedings of the International Astronomical Union
Serial Year
2009
Journal title
Proceedings of the International Astronomical Union
Record number
675144
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