A&A Supplement series, Vol. 127, January II 1998, 139-144
Received April 8; accepted April 24, 1997
B.V. Castilho , J. Gregorio-Hetem , F. Spite , M. Spite , and B. Barbuy
Send offprint request: B.V. Castilho
Universidade de São Paulo - IAG, Depto. de Astronomia, CP 3386 - 01060-970 São Paulo, Brazil
Observatoire de Paris-Meudon, 92195 Meudon Cedex, France
In a previous work we studied the IRAS colours of known Li-rich red giants and showed that they have flux ratios F12/F25 and F25/F60 in well defined ranges. By using this result as a selection criterion, we prepared a list of 280 IRAS Point Source candidates to be Li-rich giant stars.
Up to the present we have obtained spectra for of our target list. We identified five stars showing a strong LiI 670.079 nm line and six ones with a Li line of medium strength. Most of the candidates show features typical of normal giants having circumstellar dust, as indicated by their IRAS colours.
keywords: stars: abundances -- infrared: stars -- stars: late type