Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
Li-rich giants: A survey based on IRAS colours
In a previous work we studied the IRAS colours of known Li-rich redgiants and showed that they have flux ratiosF12/F25 and F25/F60 in welldefined ranges. By using this result as a selection criterion, weprepared a list of 280 IRAS Point Source candidates to be Li-rich giantstars. Up to the present we have obtained spectra for 57% of our targetlist. We identified five stars showing a strong LiI 670.079 nm line andsix ones with a Li line of medium strength. Most of the candidates showfeatures typical of normal giants having circumstellar dust, asindicated by their IRAS colours. Observations collected at theLaboratorio Nacional de Astrofisica - LNA, Brazil; Observatoire de HauteProvence - OHP, France; European Southern Observatory - ESO, Chile.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Ofiuco |
| Ascensione retta: | 17h57m20.74s |
| Declinazione: | +00°11'44.3" |
| Magnitudine apparente: | 8.814 |
| Moto proprio RA: | 19.3 |
| Moto proprio Dec: | -6.1 |
| B-T magnitude: | 11.447 |
| V-T magnitude: | 9.032 |
Cataloghi e designazioni:
|
