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HD 39583


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Rotational velocity for lithium-rich evolved stars.
Precise rotational velocities have been determined for 12 lithium-richgiant stars using the CORAVEL spectrometer. Except for HD 9746, thelithium-rich giants show normal rotational velocities with respect totypical lithium-normal giants of the same spectral type. Further, wehave found no sign of binarity for the lithium-rich giants.

Analysis of the moderately Li-rich giant HD 146850.
We report the identification of 3 Li-rich giants discovered in anongoing survey based on IRAS colours. A detailed analysis of one ofthese, HD 146850, is presented here. High-resolution spectra wereobtained for this star, using CASPEC at the 3.6m telescope of ESO. Wederived the stellar parameters (T_eff_, log g, [M/H])=4000, 1.5, -0.3. Alithium abundance of ɛ(Li)=1.6 is found, whereas [C/Fe]~0.0 and[N/Fe]~-0.1 indicating that no convective mixing has occurred. Theabundances of oxygen [O/Fe]=~+0.1 and α-elements[Mg/Fe]=[Ti/Fe]=[Ca/Fe]=~0.0 suggest that we are dealing with a diskstar, for which the radial velocity v_r_=42km/s is also moderate.

CNO Abundances and 12/C/13/C Ratios in the Atmospheres of Lithium-Rich Giants
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Turbulence and the Lithium Abundance in Giants and Main-Sequence Disk and Halo Stars
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Observation and Astrometry data

Constellation:Giraffe
Right ascension:05h57m04.24s
Declination:+57°19'27.9"
Apparent magnitude:8.266
Distance:206.612 parsecs
Proper motion RA:-14.5
Proper motion Dec:-7.9
B-T magnitude:9.414
V-T magnitude:8.361

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 39583
TYCHO-2 2000TYC 3758-428-1
USNO-A2.0USNO-A2 1425-06338926
HIPHIP 28161

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