Identification of 106 new infrared carbon stars in the IRAS Point Source Catalog - Near-infrared photometry and their space distribution in the galaxy
- Author(s)
- F. Guglielmo, Nicolas Epchtein, Th Le Bertre, Pascal Fouque, Josef Hron, Franz Kerschbaum, J. R. D. Lepine
- Abstract
A method based solely on IR colors - the combination of near-IR and IRAS colors - is used to identify 106 new IR carbon stars (IRCS). It is shown that the proportion of IRCS in a region of the IRAS two-color diagram previously thought to contain the largest concentration of such stars is not as large as expected for the faintest objects. A local spatial number density of about 12 IRCS/sq kpc is estimated. It is shown to be uniform within 5 to 11 kpc from the galactic center. The local ratio of IRCS to optical carbon stars is found to be about 35 percent. A total restitution rate of about 10 to the -4 solar masses/yr/sq kpc is derived. The efficiency of the combination of near and mid-IR photometry for the study of AGB stars is confirmed.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Université de recherche Paris Sciences et Lettres, Instituto Oceanográfico, Université Côte d'Azur, Laboratoire d'Etude du Rayonnement et de la Matiere en Astrophysique, Laboratoire d’Astrophysique de Toulouse-Tarbes
- Journal
- Astronomy & Astrophysics Supplement Series
- Volume
- 99
- Pages
- 31 - 69
- No. of pages
- 39
- ISSN
- 0365-0138
- Publication date
- 05-1993
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/0e42d250-aaa6-4ceb-9065-730c502816ac