NEW INFRARED CARBON STARS IN THE IRAS POINT-SOURCE CATALOG

Citation
F. Guglielmo et al., NEW INFRARED CARBON STARS IN THE IRAS POINT-SOURCE CATALOG, Astronomy & Astrophysics. Supplement series, 122(3), 1997, pp. 489-494
Citations number
31
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
122
Issue
3
Year of publication
1997
Pages
489 - 494
Database
ISI
SICI code
0365-0138(1997)122:3<489:NICSIT>2.0.ZU;2-8
Abstract
We present new results of a search for infrared carbon stars (IRCS) ba sed on the combination of IRAS and near infrared colours. A sample of 207 stars with IRAS colours that characterize IRCS is selected and mea sured in the JHKL photometric bands. Using a [12 -25] vs. K - L colour diagram, 20 new IRCS candidates are proposed. Medium resolution spect ra in the similar to 6000 - 9000 Angstrom range of 8 of these candidat es confirm their carbon rich nature. In addition we propose a few star s with LRS class; ''4n'' as oxygen-rich candidates, and a few stars Wi th LRS classes ''0n'' and ''1n'' as carbon-rich.