Infrared Study of J-Type Carbon Stars Based on Infrared Astronomical Satellite , Two Micron All Sky Survey, and Infrared Space Observatory Data

Abstract

We collected 113 J-type carbon stars from the published literature. Observations from 2MASS, IRAS, and ISO show that, except for silicate carbon stars in the J-type carbon star domain, the infrared properties of the other J-type carbon stars are quite similar to those of ordinary carbon stars. The above results imply that the chemical peculiarity of enhanced 13 C for J-type carbon stars is not reflected in the infrared region. In addition, the possible evolutionary scenario and binarity for J-type carbon stars are also discussed. © 2007. The American Astronomical Society. All rights reserved.