The wind of EG Andromedae is not dust driven

Details The wind of EG Andromedae is not dust driven The wind of EG Andromedae is not dust driven

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.1112v&link_type=abstract

The Astronomical Journal, vol. 108, no. 3, p. 1112-1114

Astronomy and Astrophysics

Astronomy

5

Cosmic Dust, Radiation Pressure, Stellar Atmospheres, Stellar Luminosity, Stellar Mass Ejection, Stellar Models, Stellar Physics, Stellar Spectra, Stellar Winds, Symbiotic Stars, Giant Stars, Infrared Astronomy Satellite, Iue, Line Spectra, Momentum Transfer, Spectrum Analysis, Wind Velocity

Scientific paper

The symbiotic star EG Andromedae has recently been the subject of several studies investigating its wind properties. Late-type giants are usually considered to have winds driven by radiation pressure on dust. Indeed, the derived wind velocity for EG Andromedae is consistent with this model. We point out here that there is no appreciable dust opacity in the wind of EG Andromedae using constraints on extinction limits from International Ultraviolet Explorer (IUE) and far infrared fluxes from Infrared Astronomy Satellite (IRAS). An alternate mechanism must operate in this star. We suggest that the wind can be driven by radiation pressure on molecular lines.

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