Identification of 106 new infrared carbon stars in the IRAS Point Source Catalog - Near-infrared photometry and their space distribution in the galaxy
- Autor(en)
- F. Guglielmo, Nicolas Epchtein, Th Le Bertre, Pascal Fouque, Josef Hron, Franz Kerschbaum, J. R. D. Lepine
- Abstrakt
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(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Université de recherche Paris Sciences et Lettres, Universidade Federal de São Paulo, 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
- Band
- 99
- Seiten
- 31 - 69
- Anzahl der Seiten
- 39
- ISSN
- 0365-0138
- Publikationsdatum
- 05-1993
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103003 Astronomie, 103004 Astrophysik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/0e42d250-aaa6-4ceb-9065-730c502816ac