Stationary hydrogen lines in white dwarf magnetic fields and the spectrum of the magnetic degenerate GRW + 70 deg 8247

Details Stationary hydrogen lines in white dwarf magnetic fields and the spectrum of the magnetic degenerate GRW + 70 deg 8247 Stationary hydrogen lines in white dwarf magnetic fields and the spectrum of the magnetic degenerate GRW + 70 deg 8247

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149..102w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. 102-108. DFG-supported research.

Astronomy and Astrophysics

Astrophysics

56

H Lines, Magnetic Stars, Stellar Magnetic Fields, Stellar Spectra, White Dwarf Stars, Line Spectra, Lyman Alpha Radiation, Magnetic Dipoles, Wavelengths

Scientific paper

Stimulated by the recent progress in the exploration of magnetic degenerate stars, we have extended our previous very accurate calculations of the magnetised hydrogen problem to higher excited states. We here present comprehensive results for the wavelengths and dipole strengths of stationary components of Ly α , Hα , HΒ, Hγ, and Paschen γ in the range of magnetic fields that is of importance for white dwarfs. Comparing with the spectrum of Grw + 70°8247 - not understood for decades - we find an amazing agreement between all observed spectral features and the computed wavelengths of stationary transitions of hydrogen in magnetic fields of 150-350 MG. In this way we can confirm previous identifications, and explain other features. In addition, we are able to predict a variety of further stationary points which should give rise to observable absorption lines in magnetic fields up to 1500 MG.

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