Chemical composition of gas and grains in dense interstellar clouds |
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Authors: | James Lequeux |
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Institution: | Observatoire de Meudon, 92190 Meudon, France |
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Abstract: | This paper is a short review of the present knowledge on the composition of dense clouds where stars form, with extensions to the less dense interstellar medium and to the most likely sites of grain formation. The problem is complex and intricate, and it is still difficult to answer such fundamental questions as the lifetime of the dense clouds or the lifetime of the interstellar grains. |
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