The Physics and Chemistry of the Interstellar Medium
This work provides a comprehensive overview of our theoretical and observational understanding of the interstellar medium of galaxies. With emphasis on the microscopic physical and chemical processes in space, and their influence on the macroscopic structure of the interstellar medium of galaxies, the book includes developments in this area of molecular astrophysics. The various heating, cooling, and chemical processes relevant for the rarefied gas and submicron-sized dust grains that constitute the interstellar medium are discussed in detail. This provides a firm foundation for an in-depth understanding of the ionized, neutral atomic, and molecular phases of the interstellar medium. The physical and chemical properties of large polycyclic aromatic hydrocarbon molecules and their role in the interstellar medium are highlighted, and the physics and chemistry of warm and dense photodissociation regions are discussed. This is an invaluable reference source for advanced undergraduate and graduate students, and research scientists.
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absorption abundance accretion bands calculated carbon chemistry collisional collisions column density cooling cosmic-ray ionization critical density cross section dense diffuse clouds diffuse ISM dissociation dominates dust grains efficiency electron emission equation excitation extinction factor fine-structure flux formation fraction frequency function FUV photons galactic Galaxy gas phase gas-phase given grain surfaces graphite H atom heating rate hence HII region hot gas important infrared intensity interaction intercloud interstellar dust interstellar gas interstellar medium ionization balance ionization front ionization potential ionization rate ionized gas ionizing photons ions levels lines magnetic field mass modes molecular clouds molecular hydrogen molecules nebula neutral observed optical depth optically thick PAHs parameter photo-electric photo-ionization photodissociation pressure processes radiation field radiative rate coefficient ratio reaction recombination rotational scale shock front silicates species spectrum sputtering stellar stellar wind sticking coefficient structure supernova remnant temperature thermal Tielens transitions typical velocity vibrational wavelengths