Observations Spectroscopiques de HD 50138

Details Observations Spectroscopiques de HD 50138 Observations Spectroscopiques de HD 50138

Oct 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..18..324a&link_type=abstract

Astrophysics and Space Science, Volume 18, Issue 2, pp.324-328

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

Observations of the Be star HD 50138 have been extended to the photographic infrared region up to 9500 Å. The main features noted in this wavelength range are strong lines of O i (8446 Å), H i (from P 9 to P 20), the Ca ii infrared triplet and the λ8629 line attributed to N i. The λ7772 multiplet of O i is shown to undergo important changes during the period of observations (1959 1971). Higher Balmer lines do not exhibit any emission component, but their profiles are variable and indicate the presence of satellite absorption, as already mentioned by some authors.

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