Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001coska..31..119s&link_type=abstract
Contributions of the Astronomical Observatory Skalnate Pleso, vol. 31, no. 2, p. 119-128.
Astronomy and Astrophysics
Astronomy
8
Stars: Binaries, Symbiotics, Stars: Individual, Ax Per, Broad-Band Photometry, Iue Low-Resolution Spectroscopy
Scientific paper
We present a simple method on how to reconstruct the spectral energy distribution (SED) in the continuum of symbiotic binaries between 0.12 and 5 micrometers. The reconstruction is based on the broad-band optical and infrared UBVRI and JHKLM photometry and the IUE (International Ultraviolet Explorer) low-resolution spectroscopy. The observed SED is fitted by a three component model of radiation. Two stellar components are approximated by Planck functions, while the nebular spectrum is represented by the free-bound and free-free emission from hydrogen. Based on the modeled SED, basic physical parameters -- colour temperatures of the stellar objects, electron temperature of the nebula and its emission measure and the observed luminosities of individual components of radiation -- can be determined. The method is demonstrated on the symbiotic star AX Persei.
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