A. L?ger; L. D`Hendecourt; N. Boccara Polycyclic Aromatic Hydrocarbons and Astrophysics 9789401086196

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Автор: A. L?ger; L. D`Hendecourt; N. Boccara
Название: Polycyclic Aromatic Hydrocarbons and Astrophysics
ISBN: 9789401086196
Издательство: Springer
Классификация: ISBN-10: 9401086192
Обложка/Формат: Paperback
Страницы: 402
Вес: 0.59 кг.
Дата издания: 26.09.2011
Серия: Nato Science Series C:
Язык: English
Размер: 234 x 156 x 22
Основная тема: Physics
Ссылка на Издательство: Link
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Поставляется из: Германии
Описание: The near Infra-Red emission of the Interstellar Medium is a very puzzling subject. In the brightest regions, where spectroscopic observa- tions are possible from the ground, several bands (3.3 - 3.4 - 6.2 - 7.7 - 8.6 - 11.3 m) have been observed since 1973. The absence of satisfying explanation was so obvious that they were called Unidenti- fied IR Emission Bands. The puzzle still increased when were known the first results of the general IR sky survey made by the satellite IRAS. On a large scale, the near IR emission of the Interstellar medium was expected to be very small but it was observed to be about one third of the total IR emission for our own galaxy ..- The situation has moved in 1984 when it was suggested that a class of stable organic molecules, the Polycyclic Aromatic Hydrocarbons (PAHs) could be at the origin of this near IR emission. Initially based on the required refractory character of particules that should be heated to high temperature without subliming, this hypothesis leads to a sugges- tive spectroscopic similarity with the observed astronomical bands. This hypothesis is attractive and it has many implications, for ins- tance, the PAHs would be the most abundant organic molecules in the universe. However, many points have to be clarified and the different consequences of this suggestion should be explored.

Polycyclic Aromatic Hydrocarbons and Astrophysics, A. L?ger; L. D`Hendecourt; N. Boccara