Spectroscopic investigations of Herbig-Ae-Be-Stars

Physics

Scientific paper

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A Stars, B Stars, Emission Spectra, Main Sequence Stars, Stellar Models, Stellar Structure, High Resolution, Line Spectra, Radial Velocity, Stellar Envelopes, Stellar Mass

Scientific paper

'Herbig-Ae-Be-Stars' are assumed to be pre-main sequence objects of moderate mass with line-emitting envelopes of an unknown nature. From present theoretical knowledge, it is not clear whether the physical structure of these envelopes is dominated by mass accretion, or mass loss induced by a stellar wind, or radiation pressure effects. Radial velocities and remarks on peculiarities are given for the star HD 200 775, which seems to represent a typical Herbig-Ae-Be-star. A catalogue of about 60 supposed Herbig-Ae-Be-stars is presented.

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