6 Li in the Atmosphere of GJ 117 | Zendy

D. J. Christian | Zendy; M. Mathioudakis | Zendy; Darko Jevremović | Zendy; P. H. Hauschildt | Zendy; E. Baron | Zendy

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⁶ Li in the Atmosphere of GJ 117

Author(s) -

D. J. Christian,

M. Mathioudakis,

Darko Jevremović,

P. H. Hauschildt,

E. Baron

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/497688

Subject(s) - physics , astrophysics , metallicity , atmosphere (unit) , stars , halo , spallation , astronomy , spectral line , nuclear physics , galaxy , neutron , thermodynamics

We present high resolution VLT UVES observations of the active K dwarf GJ117. 6^Li enhancement has been shown for energetic solar events, onechromospherically active binary, and several dwarf halo stars. Our analysisreveals the detection of 6^Li on this source with 6^Li/7^Li = 0.030+/-0.010. Wefound no significant contribution from other lines, including Ti I, in the Liprofile of GJ 117 and a template star of similar spectral type and metallicity.We discuss the possibility for 6^Li production by spallation and find it to beconsistent with the activity levels of the object.Comment: 14 Pages, 5 figures, 1 Table; accepted ApJ Letter

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