Variability of the H-alpha emission in Phi Per

Details Variability of the H-alpha emission in Phi Per Variability of the H-alpha emission in Phi Per

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.107..323g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 107, no. 2, Dec. 1984, p. 323-325.

Astronomy and Astrophysics

Astrophysics

B Stars, H Alpha Line, Stellar Spectra, Variable Stars, Shell Stars, Spectrum Analysis, Stellar Envelopes

Scientific paper

Variations of H-alpha emission lines are investigated using photoelectric spectrum scans of the Be shell star Phi Per in the H-alpha region. The observations were obtained during November 1977 to December 1979 on three nights. The range of the spectrum covered in each scan is between 6000 and 7000 A. Short-term time variations in the range of minutes to hours are observed in the profiles and integrated strengths of H-alpha mission-lines in Phi Per. These variations may be related to the possibility of hydromagnetic instabilities within the envelope.

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