Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..831g&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 4, p. 831-843.
Astronomy and Astrophysics
Astronomy
13
Far Infrared Radiation, Mira Variables, Radiative Transfer, Stellar Envelopes, Stellar Spectrophotometry, Olivine, Signal To Noise Ratios, Silicates, Stellar Temperature
Scientific paper
A detailed radiative transfer model of the observed energy distribution for the M-type Mira star WX Ser at maximum light is presented. The model successfully matches observations of the star in the 0.55-100 micron wavelength range. Dust is found to play the dominant role in determining the observed spectrum of this source throughout the wavelength range modelled. A dust shell composed of silicate dust grains with radii in the 0.005-0.025 micron range is found to give a good fit to photometric observations of the star at maximum light. A new 'composite' dielectric function is proposed which gives a better fit to the observations of WX Ser in the 8-23 micron region of the spectrum than that given by dielectric functions in the same spectroscopic region proposed by Draine and Lee (1984, 1987) and Kraetschmer and Huffmann (1979).
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