Multiband photometry (8-13 microns) of Herbig Ae/Be stars

Physics

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A Stars, B Stars, Stellar Physics, Stellar Spectrophotometry, Absorption Spectra, Emission Spectra, Near Infrared Radiation, Silicates, Stellar Models

Scientific paper

New multifilter 8 - 13 μm observations of 14 Herbig Ae/Be stars are presented. Silicate features are found in emission or absorption; a simple model to fit the obtained data provides an evaluation of the dust shell temperature and of the optical depth τ10. These parameters are used both to define the circumstellar dust shell and to discuss the applicability of the free-free hypothesis to explain the near-infrared spectrum (J,H,K,L' and M).

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