Simultaneous Photometry and Spectroscopy of the B2/E Variable Star HD45677

in IAU Colloq. 46: Changing Trends in Variable Star Research (1979)

Not Available

The complex structure of the CA II /H and K/ lines in the spectrum of the A0ep star with infrared excess HD 190073. III - Night to night variations during the period 13-18 August 1975 and interpretation of the line profiles via a resonance scattering mechanism

in Astronomy and Astrophysics (1977), 54

Abstract image available at: http://esoads.eso.org/abs/1977A&A....54..219S

Variations in the U, B, V and u, v, b, Y magnitudes of the peculiar Be star HD 45677

in Astronomy and Astrophysics (1976), 51

Abstract image available at: http://cdsads.u-strasbg.fr/abs/1976A&A....51..269F

The complex structure of the Ca II (H and K) lines in the spectrum of the AOep star with infrared excess HD190073

in Slettebak, A. (Ed.) IAUS 70: Be and Shell Stars (1976)

The complex structure of the Ca II (H and K) lines in the spectrum of the A0ep star with infrared excess HD 190073. II. Interpretation: the selective effect of radiative forces.

in Astronomy and Astrophysics (1976), 47

Abstract image available at: http://esoads.eso.org/abs/1976A&A....47..121S

HD 45677 est-elle une étoile variable ?

in Astronomy and Astrophysics (1972), 17(1), 142-145

Whereas HD 45677 has faded by approximately one magnitude since 1969, the amplitude of variation in photographic magnitude between 1899 and 1969 has always been smaller than 0.3 mag.

Consideration of the forbidden lines of iron in the states from Fe0 to Fe6+

in Mémoires de la Societe Royale des Sciences de Liège (1969), 17

The iron atom which has a fairly high cosmic abundance presents the great interest of appearing in a wide variety of stars and nebulae, at many stages of ionization, and of revealing forbidden transitions ... [more ▼]

The iron atom which has a fairly high cosmic abundance presents the great interest of appearing in a wide variety of stars and nebulae, at many stages of ionization, and of revealing forbidden transitions in emission in many of these ionization stages. The present paper discusses the following topics : (a) the case of the as yet undiscovered forbidden lines of neutral iron (Fe0) ; (b) some recently acquired astronomical information on the forbidden lines of the stages Fe+ to Fe6+ ; (c) general considerations on the important information revealed by these forbidden lines of iron on the physical structure and excitation mechanisms which are present in the emission line stars of early and late types. For lack of time we give only a very summarized version of our paper ; a complete text will appear later. [less ▲]

Examples of astronomical needs for atomic spectra.

in Bashkin, Stanley (Ed.) Beam-Foil Spectroscopy; Volume 1. Proceedings of the conference held at the University of Arizona, USA, November 20-22, 1967 (1968)