Physics of Formation of FeII Lines Outside LTE 1988th ed.(Astrophysics and Space Science Library Vol.138) H XIII, 349 p. 52 illu
内容
Lines of singly ionized iron (FeII) are found as absorption- and omission lines in spectra of many atrophysical objects, such as the Sun, cool stars, circumstellar envelopes of hot stars, novae, diffuse nebulae including supernova remnants, and active galactic nuclei. These lines are often formed far from LTE, and their interpretation is not easy, as there are still gaps in our knowledge of various physical parameters. In addition, the density of very strong FeII lines becomes very large in the ultraviolet, and the lines can play a major role in line blanketing. They need, therefore, to be taken into account in any energy balance argument. The main topics discussed in this volume are: 1) Basic atomic data; 2) Observation of FeII in different astronomicalobjects from the solar photosphere to stellar chromospheres and winds, from novae to active galactic nuclei; 3) Theory of line formation and models, including data analysis techniques and spectral synthesis; 4) Prospects of future research, including newlaboratory work, ground and space observations.
