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Molecular Evolution in Interstellar Clouds. I. Ion Chemistry in Dense Clouds
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Interstellar Molecules and Dense Clouds
Science, 1971Current knowledge of the interstellar medium is discussed on the basis of recent published studies. The subjects considered include optical identification of interstellar molecules, radio molecular lines, interstellar clouds, isotopic abundances, formation and disappearance of interstellar molecules, and interstellar probing techniques.
D M, Rank, C H, Townes, W J, Welch
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Newly Detected Molecules In Dense Interstellar Clouds
Astrophysical letters & communications, 1988The published version is located at http://adsabs.harvard.edu/full/1988ApL%26C..26 ...
Irvine, William M. +4 more
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Radiation transfer in dense interstellar clouds
Il Nuovo Cimento C, 1984The scattering properties of interstellar dust in the far ultraviolet as derived from the observations are reviewed. The transfer of ultraviolet radiation within a spherically symmetric inhomogeneous cloud is analysed using the method of successive scattering. The effects of different assumptions, both on the albedo and asymmetry factor of interstellar
S. Aiello +4 more
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Magnetic fields in dense interstellar clouds
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1981Evidence is presented that shows that magnetic fields pervade the entire interstellar medium including interstellar gas clouds of both low and high density. The magnetic field in the ‘seed’ gas from which the denser clouds form is 0.2-0.3 nT (1T — 10 4 G).
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Dense Interstellar Cloud Chemistry
1988Significant advances in our understanding of the gas phase chemistry of dense interstellar clouds have occurred in the last few years. These advances include the delineation of the reaction pathways by which complex molecules are produced, a preliminary understanding of the varied chemistries existing in and near regions of star formation, an ...
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Molecule Formation in Dense Interstellar Clouds
Publications of the Astronomical Society of Japan, 1973Abstract The present status of our knowledge of formation processes for simple molecules in interstellar gas is reviewed. In particular, dense gas clouds with number densities of 102–104 atoms cm–3 are considered. The negative-ion process [X + e → X– + hν;X–+Y→XY+e] and the radiative association are the two important molecule formation ...
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Organic molecules in the gas phase of dense interstellar clouds
Advances in Space Research, 1995Since a previous COSPAR review on this subject, the number of molecular species identified by astronomers in dense interstellar clouds or in the envelopes expelled by evolved stars has grown from about eighty to approximately one hundred. Recent detections in stellar envelopes include the radical CP, the second phosphorus-containing astronomical ...
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Dust emission and scattering in dense interstellar clouds
Planetary and Space Science, 2015Abstract Dust has a crucial role in the physics of interstellar medium (ISM) and it is one of the main tracers used in studies of dense clouds. Its importance has been accentuated by the large amounts of data available from the recent fleet of infrared and submillimetre satellites. These observations are providing further insights into the properties
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The Molecular Composition of Dense Interstellar Clouds
1991The dense interstellar clouds in our Milky Way Galaxy and other galaxies are the most massive molecular objects known in the Universe. Their composition and chemical evolution are, in consequence, fundamental aspects of nature whose investigation is basic to space chemistry.
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