The behavior of certain helium lines in the P Cygni spectrum

Details The behavior of certain helium lines in the P Cygni spectrum The behavior of certain helium lines in the P Cygni spectrum

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.158...89m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 158, no. 1, Aug. 1989, p. 89-93.

Astronomy and Astrophysics

Astrophysics

3

Line Spectra, Spectrograms, Stellar Spectra, Supergiant Stars, Helium, Optical Thickness, Radial Velocity

Scientific paper

Sixty-two spectrograms of the supergiant P Cyg, obtained with a coude spectrograph were used to study the displacements of the absorption components of the He I spectrum of this star. Twelve lines from four series were examined. It was established that all observed cases can be reduced to a few which are typical. These cases are stated in the form of the comparison between the hydrogen and helium lines. All profiles were rectified and their complex structure was taken into consideration.

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