Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970ap%26ss...8..463k&link_type=abstract
Astrophysics and Space Science, Volume 8, Issue 3, pp.463-470
Astronomy and Astrophysics
Astrophysics
14
Scientific paper
The equivalent widths of the oxygen lines at λλ 7774 and 8446 and of Hα (and some Hβ) have been measured for 22 early-type, emission-line stars. A strong correlation between Hα and λ 8446 intensities has been found, although there is no such correlation between Hα and λ 7774. This confirms the probability that Bowen's mechanism is operative (the neutral oxygen 33 D state is overpopulated because the excitation energy of Ly-β nearly coincides with that of the Oi λ 1025 line). The possibility of using λ 8446 and Hα equivalent widths for a comparison of oxygen to hydrogen abundances in these stars is discussed.
Kitchin Christopher R.
Meadows Jack A.
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