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Lithium in the symbiotic Mira V407 Cyg

2003, Monthly Notices of the Royal Astronomical Society

[useAMS,usenatbib]mn2e graphicx times [Lithium in the symbiotic Mira V407 Cyg]LithiuminthesymbioticM iraV 407 Cyg[T atarnikovaetal.]A.A.T atarnikova1 , P.M. Marrese2 , U. Munari2 , T. Tomov3 , P. A. Whitelock4 , B.F. Yudin1 document Accepted 12 June 2003. Received . . . ; inoriginalf orm . . . firstpage–lastpage 2003 firstpage abstract We report an identification of the lithium resonance doublet LiI 6708 Å inthespectrumof V 407 Cyg, asymbioticM = λ/∆λ ≈ 18500 and the measured equivalent width of the line is ∼ 0.34 Å.Itissuggestedthatthelithiumenrichmentisduetoho richAGBstarsintheM agellanicclouds, ZrO5551 Å, 6474 Å absorptionbandswerenotf oundinthespectrumof V 407 Cyg.T hese typestarsatlow − resolution.Althoughweidentif iedweakZrO5718 Å, 6412 Å thesearenotvisibleinthelow − resolutionspectra, andwetheref oreclassif ytheM irainV 407 CygasanM type.T his, togetherwithotherpublishedwork, sugges processenrichedmaterialingalacticAGBstars. 1