| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 127, Number 2, January II 1998
|
|
|---|---|---|
| Page(s) | 139 - 144 | |
| DOI | https://doi.org/10.1051/aas:1998338 | |
| Published online | 15 January 1998 | |
Li-rich giants: A survey based on IRAS colours*
1
Universidade de São Paulo - IAG, Depto. de Astronomia, CP 3386 - 01060-970 São Paulo, Brazil
2
Observatoire de Paris-Meudon, 92195 Meudon Cedex, France
Send offprint request to: B.V. Castilho
Received:
8
April
1997
Accepted:
24
April
1997
In a previous work we studied the IRAS colours of known
Li-rich red giants and showed that they have flux
ratios 
and 
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.
Key words: stars: abundances / infrared: stars / stars: late type
© European Southern Observatory (ESO), 1998