Infrared study of the extreme carbon stars based on IRAS, 2MASS and ISO data |
| |
Authors: | Pei-Sheng Chen Hong-Guang Shan |
| |
Institution: | (1) National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650011, China |
| |
Abstract: | We collected 55 galactic extreme carbon stars from the published literature in this paper. Observational data from IRAS, 2MASS
and ISO were analyzed. The results show that the infrared properties of extreme carbon stars are quite different to those
for ordinary visual carbon stars. It is shown from IRAS and 2MASS photometric data that extreme carbon stars have much redder
infrared colors not only in the far infrared, but also in the near infrared, hence they have much thicker ciucumstellar envelopes
and mass loss. It is also indicated from IRAS Low-Resolution Spectra (LRS) and ISO Short Wavelength Spectra (SWS) that they
have much redder infrared spectra from 2 μm to 45 μm. The above results are believed to be the signature of undergoing the
last stages of AGB evolution for extreme carbon stars. |
| |
Keywords: | Stars: late-type Stars: carbon Infrared: stars |
本文献已被 SpringerLink 等数据库收录! |
|