New infrared carbon stars in the IRAS point source catalog ^*,**

¹ 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: guglielmo@obspm.fr

Received: 13 June 1996
Accepted: 21 August 1996

Abstract

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.