Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...107...36h&link_type=abstract
Astronomy and Astrophysics, vol. 107, no. 1, Mar. 1982, p. 36-38.
Astronomy and Astrophysics
Astronomy
18
Eclipsing Binary Stars, Iron, Optical Pumping, Radiative Transfer, Stellar Spectra, Ultraviolet Astronomy, Atomic Excitations, B Stars, Fine Structure, Iue, Resonance Lines
Scientific paper
We show by means of high-resolution lUE spectra of 32 Cyg during and shortly after eclipse - there is a total eclipse of the B star in the UV - that the Fe II UV-multiplet 191 is pumped via the Fe II resonance UV-multiplet 9 λλ1260-76 Å. We show directly from observations 1. that all absorbed multiplet 9 photons are emitted as Fe II UV Mult. 191 lines 2. that the observed line intensity ratio 1785/1787/1788 is consistent with the pumping mechanism.
Hempe K.
Reimers Dieter
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