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The shape of the interstellar absorption band
Astrophysics and Space Science, 1970Profiles of the 4430 band are calculated for resonant absorbers distributed within graphite particles, silicate particles and solid H2 grains. The sizes of grains adopted are those which give agreement with the interstellar extinction. Only in the latter two cases can satisfactory agreement be obtained with recent observational data.
N. C. Wickramasinghe, K. Nandy
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Interstellar Band Absorption in a Supernova?
Nature, 1969THERE is a fairly general consensus of opinion that the interstellar dust consists basically of graphite, with or without various coatings on the grains. In proposing this constitution, Hoyle and Wickramasinghe1 suggested that the grains could be formed in the atmospheres of cool giant stars, in particular the N-type carbon stars.
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Variable interstellar absorption lines: a brief review
Astrophysics and Space Science, 2003I review the recent discoveries of variable interstellar absorption lines, widely taken to imply the existence of very small scale(10–100 AU) structure in the interstellar medium. Possible origins of this structure are discussed, and attention is drawn to the fact that most known examples seem to be associated with interstellar shells and bubbles of ...
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Absorption Lines from Intermediate-Latitude Interstellar Complexes
Publications of the Astronomical Society of the Pacific, 1966Recent observations of the 21 cm emission line of hydrogen ( Blaauw 1962) have revealed the existence of massive interstellar cloud complexes at considerable distances from the galactic plane. The region 126° < ln < 142°, -19° < bn < -7°, near the association I Persei, in particular, shows a high level of emission at velocities of -48 km/sec (feature ...
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Absorption and Emission Characteristics of Interstellar Dust
1984Molecular transitions which occur in the middle infrared region of the spectrum correspond with the characteristic frequencies of molecular vibrations. Thus, moderate resolution spectroscopy of the interstellar medium offers unique evidence about the molecules in the condensed and gaseous phases and their distribution.
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Interstellar Absorption Below 100 Å
Publications of the Astronomical Society of the Pacific, 1961Stephen E. Strom, Karen M. Strom
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Absorption Line Spectroscopy of the Interstellar Medium
1983Absorption line studies of the interstellar medium are described. The discussion is in three parts. The first describes current views of diffuse interstellar clouds, while the second reports the results of recent extensive surveys of interstellar regions. The final part is an outline of possible future observations.
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