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Spectrophotometry of some lines in Beta Lyrae
Author(s) -
Svolopoulos Sotirios N.
Publication year - 1967
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.19672900404
Subject(s) - spectrograph , emission spectrum , spectral line , physics , astrophysics , spectrophotometry , helium , optics , astronomy , atomic physics
A spectrophotometric study of the spectral lines Hγ, He I λ 4388 Å, He I λ 4472 Å, Fe II λ 4352 Å and Mg II λ 4481 Å in the spectrum of β Lyrae has been made by using fifteen spectra taken with a spectrograph (8 Å/mm) attached to the 1‐metre reflector of the Hamburger Sternwarte. The profiles of the above lines are given. Also the probable variations of these profiles with time are examined on the basis of a comparison of our observational data with data existing in the literature. More attention was paid to the emission components of Hγ and the Helium lines. The views previously described in a general way by Sahade as to the structure of the emission lines are rather supported.