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See detailNew identifications of Fe III in the spectra of early B stars.
Swings, Polydore ULg; Edlén, B.; Grandjean, J.

in Astrophysical Journal (1939), 90

Starting from their laboratory measurements, the authors are able to show that about one hundred lines observed in the spectra cf early B-type stars are due to Fe III. The ionization potential of Fe III ... [more ▼]

Starting from their laboratory measurements, the authors are able to show that about one hundred lines observed in the spectra cf early B-type stars are due to Fe III. The ionization potential of Fe III is 30.48 volts. [less ▲]

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See detailThe origin of unidentified interstellar absorption lines
Swings, Polydore ULg; Öhman, Y.

in Observatory (The) (1939), 62

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See detailForbidden FeIII-lines in celestial spectra
Edlén, B.; Swings, Polydore ULg

in Observatory (The) (1939), 62

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See detailLe domaine infra-rouge en spectroscopie astronomique
Swings, Polydore ULg; Migeotte, M.

in Ciel et Terre (1939), 55

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See detailUne grande énigme de la spectroscopie astronomique actuelle : le spectre de raies d'émission de la couronne solaire
Swings, Polydore ULg

in Scientia : Rivista di Scienza = Revue Internationale de Synthèse Scientifique = Internationale Zeitschrift für Wissenschaftliche Synthese = International Review of Scientific Synthesis (1939), 65

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