This guide to the physics and observations of Radio Recombination Lines from astronomical sources includes history, theory, applications, 250 equations and 110 illustrations. This soft cover edition contains corrections and updates from hardbound edition.The calculated column density for C+ is ~ 2 x 1018cm~2 with a weak dependence on the gas density (no) and on the incident UV radiation. The layer of S+ is thicker than C II, reaching a depth of Ay ~ 6 because of its lower ionization potential relative to ... At the same time, the ionization front and associated shock waves from the nascent H II regions create higher densities that , ... Consequently, the physical conditions within the C II regions have 170 3 RRLs: Tools for Astronomers XLVI.
|Title||:||Radio Recombination Lines|
|Author||:||M.A. Gordon, R.L. Sorochenko|
|Publisher||:||Springer Science & Business Media - 2009-01-10|