Mm/submm observations of symbiotic binary stars: implications for the mass loss and mass exchange

Details Mm/submm observations of symbiotic binary stars: implications for the mass loss and mass exchange Mm/submm observations of symbiotic binary stars: implications for the mass loss and mass exchange

2001-02-12

arxiv.org/abs/astro-ph/0102198v1

Astronomy and Astrophysics

Astrophysics

7 pages, 8 figures. Paper presented at COSPAR 2000 "New results in FIR and Submm Astronomy", to be published in Advances in Sp

Scientific paper

10.1016/S0273-1177(02)00599-9

We discuss mm/submm spectra of a sample of symbiotic binary systems, and compare them with popular models proposed to account for their radio emission. We find that radio emission from quiescent S-type systems originates from a conical region of the red giant wind ionized by the hot companion (the STB model), whereas more complicated models involving winds from both components and their interaction are required to account for radio emission of active systems. We also find that the giant mass-loss rates derived from our observations are systematically higher than those for single cool giants. This result is in agreement with conclusions derived from IRAS observations and with requirements of models for the hot component.

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