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2008•Astronomy and AstrophysicsOpen access

Self-broadening of the hydrogen Balmerαline

N. F. Allard, John F. Kielkopf, R. Cayrel, C. van ’t Veer-Menneret

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Abstract

Context.Profiles of hydrogen lines in stellar spectra are determined by the properties of the hydrogen atom and the structure of the star's atmosphere. Hydrogen line profiles are therefore a very important diagnostic tool in stellar modeling. In particular they are widely used as effective temperature criterion for stellar atmospheres in the range Teff 5500–7000 K.

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Context.Profiles of hydrogen lines in stellar spectra are determined by the properties of the hydrogen atom and the structure of the star's atmosphere. Hydrogen line profiles are therefore a very important diagnostic tool in stellar modeling. In particular they are widely used as effective temperature criterion for stellar atmospheres in the range Teff 5500–7000 K.

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Available abstract

Context.Profiles of hydrogen lines in stellar spectra are determined by the properties of the hydrogen atom and the structure of the star's atmosphere. Hydrogen line profiles are therefore a very important diagnostic tool in stellar modeling. In particular they are widely used as effective temperature criterion for stellar atmospheres in the range Teff 5500–7000 K.

Key concepts: Balmer series, Stellar atmosphere, Hydrogen, Astrophysics, Line (geometry), Context (archaeology), Hydrogen line, Hydrogen atom

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