Identification of 106 new infrared carbon stars in the IRAS Point Source Catalog - Near-infrared photometry and their space distribution in the galaxy

Details Identification of 106 new infrared carbon stars in the IRAS Point Source Catalog - Near-infrared photometry and their space distribution in the galaxy Identification of 106 new infrared carbon stars in the IRAS Point Source Catalog - Near-infrared photometry and their space distribution in the galaxy

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...99...31g&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 99, no. 1, p. 31-69.

Astronomy and Astrophysics

Astronomy

62

Astronomical Catalogs, Carbon Stars, Infrared Stars, Galactic Bulge, Infrared Astronomy Satellite, Point Sources, Spatial Distribution, Stellar Evolution, Variable Stars

Scientific paper

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.

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