Astron. Astrophys. Suppl. Ser.
Volume 122, Number 3, May I 1997
|Page(s)||489 - 494|
|Published online||15 May 1997|
Leiden Observatory, NL–2300 RA Leiden, The Netherlands
2 Observatoire de Paris, Département de Recherche Spatiale, URA CNRS 264, F–92195 Meudon Principal Cedex, France
3 Université de Paris X–Nanterre, F–92000 Nanterre Cedex, France
4 Institut d'Astrophysique de Paris, CNRS UPR 341, F–75014 Paris, France
Corresponding author: Send offprint request to: FG 2, e-amil: firstname.lastname@example.org
Accepted: 21 August 1996
We present new results of a search for infrared carbon stars (IRCS) based on the combination of IRAS and near infrared colours. A sample of 207 stars with IRAS colours that characterize IRCS is selected and measured in the JHKL photometric bands. Using a vs. colour diagram, 20 new IRCS candidates are proposed. Medium resolution spectra in the Å range of 8 of these candidates confirm their carbon rich nature. In addition we propose a few stars with LRS class "4n" as oxygen–rich candidates, and a few stars with LRS classes "0n" and "1n" as carbon–rich.
Key words: stars: carbon / stars: late-type / stars: AGB and Post-AGB / galaxy: stellar content / infrared: stars / stars: circumstellar matter
Tables 2 and 3 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (188.8.131.52) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1997