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An infrared study of Be stars based on ISO SWS01 spectra
Zhang, Pin; Fu, Zai-Qi
The Infrared Space Observatory (ISO) Short-Wavelength Spectrometer (SWS) spectra of 10 Be stars are presented. It can be seen that the Be stars show a diversity in their ISO SWS01 spectral classifications by Kraemer et al., from naked stars, stars associated with dust, stars with warm dust shells, stars with cool dust shells to very red sources. I…
Spectral variations of carbon stars based on ISO SWS data
Chen, Pei-Sheng; Yang, Xiao-Hong
We investigate the spectral variations of seven carbon stars in the infrared using ISO SWS spectral data. Continuum variations of those carbon stars show that during the central star pulsations when carbon stars become fainter in the infrared, their ISO SWS spectra become redder and the near-IR temperature (Tnir) decreases. When carbon …