References of "Swings, Polydore"
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See detailExposé des travaux récents de l'Institut d'Astrophysique de l'Université de Liège
Swings, Polydore ULg

in Revue Universelle des Mines (1950), VI(3), 74-79

Après un court préambule exposant les débuts de la spectroscopie à l'Université de Liège et la genèse de son installation au laboratoire de Cointe de l'Institut d'Astrophysique, l'auteur justifie la ... [more ▼]

Après un court préambule exposant les débuts de la spectroscopie à l'Université de Liège et la genèse de son installation au laboratoire de Cointe de l'Institut d'Astrophysique, l'auteur justifie la collaboration de celui-ci avec le C.N.R.M. Il donne ensuite une description succincte des appareillages d'avant-garde dont il disposera d'ici peu. [less ▲]

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See detailThe shell spectrum of BD- 14° 1971 (PGG 1985) in 1947
Swings, Polydore ULg

in Annales d'astrophysique (1950), 13(2), 134-145

Boss 1985 a révélé en fin 1947, un spectre entièrement différent de ce qui avait été observé précédemment. La région ultraviolette est caractérisée par d'intenses raies d'absorption du genre de celles que ... [more ▼]

Boss 1985 a révélé en fin 1947, un spectre entièrement différent de ce qui avait été observé précédemment. La région ultraviolette est caractérisée par d'intenses raies d'absorption du genre de celles que l'on observe dans les étoiles à atmosphère étendue (table I). Les raies d'émission de Fe II, [Fe II] et [Ni II] sont restées à peu près les mêmes que précédemment (table 2). Le spectre ultraviolet est comparé à ceux d'étoiles très étendue. L'analogie de B 1985 et de VV Cephei est discutée. De nouvelles observations tant photométriques que spectroscopiques sont désirables. [less ▲]

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See detailLe spectre de l'étoile géante I Puppis de classe cA2ep
Swings, Polydore ULg

in Annales d'astrophysique (1950), 13(2), 114-133

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See detailRemarques sur les systèmes catadioptriques de Bouwers
Swings, Polydore ULg

in Bulletin de la Société Royale des Sciences de Liège (1950), (3), 168-176

L'auteur donne des expressions algébriques et des exemples numériques pour les systèmes optiques dans lesquels l'aberration sphérique d'un ou plusieurs miroirs sphériques est compensée par celle d'un ... [more ▼]

L'auteur donne des expressions algébriques et des exemples numériques pour les systèmes optiques dans lesquels l'aberration sphérique d'un ou plusieurs miroirs sphériques est compensée par celle d'un ménisque de faible puissance, mais de grand facteur de forme. La correction par une lame plan-parallèle est aussi envisagée. [less ▲]

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See detailAérophysique et astrophysique
Swings, Polydore ULg

in Scientia; Rivista di Scienza (1950), 44

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See detailThe infrared spectra of the Planetary Nebulae BD+30°3639, NGC 6572, and NGC 6543
Swings, Polydore ULg; Jose, P. D.

in Publications of the Astronomical Society of the Pacific [=PASP] (1949), 61

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See detailComparison of the Na and N2+ flashes at Twilight and Dawn.
Swings, Polydore ULg; Nicolet, M.

in Astrophysical Journal (1949), 109

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See detailThe Spectra of the Night Sky and the Aurora
Swings, Polydore ULg; Meinel, A. B.

in Kuiper, Gerard Peter (Ed.) The atmospheres of the earth and planets: papers presented at the Fiftieth Anniversary Symposium of the Yerkes Observatory, September, 1947 (1949)

Description of the night-sky and twilight spectra Description of auroral spectra Interpretation of the observations Conclusions

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See detailAn unusual stellar species
Struve, O.; Swings, Polydore ULg

in Publications of the Astronomical Society of the Pacific [=PASP] (1948), 60

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See detailThe spectra of the night sky and of the aurorae
Swings, Polydore ULg

in Publications of the Astronomical Society of the Pacific [=PASP] (1948), 60

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See detailAnomalies in the earliest spectral types
Swings, Polydore ULg

in Annales d'astrophysique (1948), 2(4), 228-246

Suggestions for further work on the classification of Wolf-Rayet stars are made, especially in relation with the anomalies presented by certain nuclei of planetary nebulae. In the Of-stars, in which the ... [more ▼]

Suggestions for further work on the classification of Wolf-Rayet stars are made, especially in relation with the anomalies presented by certain nuclei of planetary nebulae. In the Of-stars, in which the spectra are superpositions of typical observations O-stars and shell lines, remarkable differences occur in the relative intensities of various shell lines. The relations between X-and Of-stars are discussed. The peculiar intensities presented by certain transitions of various atoms in anomalous stars of early type are examined. The physical factors (dilution, fluorescence, departure from black body distribution, chemical composition) affecting the relative intensities of various transitions within one atom, and of various atoms relative to each other, are discussed. [less ▲]

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See detailPolyatomic molecules in late-type stars.
Swings, Polydore ULg; McKellar, A.

in Astrophysical Journal (1948), 108

Some general problems connected with the presence of polyatomic molecules in stellar atmospheres are noted, and, in particular, reasons are advanced in favor of attributing at least part of the intensity ... [more ▼]

Some general problems connected with the presence of polyatomic molecules in stellar atmospheres are noted, and, in particular, reasons are advanced in favor of attributing at least part of the intensity drop and fluctuations in the spectra of the N-type stars violetward of λ 4100 to the triatomic molecule CH2. [less ▲]

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See detailLa Physicochimie des comètes
Swings, Polydore ULg

in Ciel et Terre (1948), 64

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See detailThe Spectrum of Comet 1947n.
Swings, Polydore ULg; Page, Thornton

in Astrophysical Journal (1948), 108

The spectrum of Comet 1947n has been observed from heliocentric distance r = 0.504 to r = 1.135 between λ 3000 and λ 8900. The OH band is unusually weak relative to NH. The (0, 0) band of CN reveals a ... [more ▼]

The spectrum of Comet 1947n has been observed from heliocentric distance r = 0.504 to r = 1.135 between λ 3000 and λ 8900. The OH band is unusually weak relative to NH. The (0, 0) band of CN reveals a complex rotational structure due to fluorescence, similar to that observed in previous comets. Features appearing within the Swan bands are described and discussed. The red region is mainly due to NH2. Two intense infrared emissions have been found for the first time at λ 7906 and λ 8106. A detailed discussion seems to indicate that they may be attributed to the red system of CN. This CN emission in the infrared does not result from fluorescence but probably from the photodissociation of a parent-molecule. No atomic lines have been found other than the D lines of Na. The two components of the nucleus reveal exactly the same spectrum. [less ▲]

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See detailThe relative intensities of the coronal and other forbidden lines.
Bowen, I.-S.; Swings, Polydore ULg

in Contributions from the Mount Wilson Observatory (1947), 725

The behavior of the coronal lines in RS Ophiuchi, T Pyxidis, and T Coronae Borealis is in accord with the physical properties of these lines as predicted from Edlén's identifications. Observed anomalies ... [more ▼]

The behavior of the coronal lines in RS Ophiuchi, T Pyxidis, and T Coronae Borealis is in accord with the physical properties of these lines as predicted from Edlén's identifications. Observed anomalies in the relative abundance of certain ions in these and similar objects may be explained by irregularities in the intensity-curve of the primary exciting radiation of the central star, caused by H and He II continuous absorption. One line in the RS Oph spectrum is identified with [K XI]. [less ▲]

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See detailThe relative intensities of the coronal and other forbidden lines.
Bowen, I.-S.; Swings, Polydore ULg

in Astrophysical Journal (1947), 105

The behavior of the coronal lines in RS Ophiuchi, T Pyxidis, and T Coronae Borealis is in accord with the physical properties of these lines as predicted from Edlén's identifications. Observed anomalies ... [more ▼]

The behavior of the coronal lines in RS Ophiuchi, T Pyxidis, and T Coronae Borealis is in accord with the physical properties of these lines as predicted from Edlén's identifications. Observed anomalies in the relative abundance of certain ions in these and similar objects may be explained by irregularities in the intensity-curve of the primary exciting radiation of the central star, caused by H and He II continuous absorption. One line in the RS Oph spectrum is identified with [K XI]. [less ▲]

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See detailLe premier demi-siècle de l'Observatoire Yerkes
Swings, Polydore ULg

in Ciel et Terre (1947), 63

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See detailThe problem of the rare earths in α2 Canum Venaticorum
Struve, Otto; Swings, Polydore ULg

in Publications of the American Astronomical Society (1946), 10

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See detailNitrogen flaring stages of novae
Swings, Polydore ULg

in Publications of the American Astronomical Society (1946)

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See detailNew results on forbidden transitions of [FE II], [FE III], [FE V], [FE VII], and [FE X] in stellar spectra
Swings, Polydore ULg; Struve, O.

in Publications of the American Astronomical Society (1946)

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