Moving Envelopes Of Stars

Emission line stars are attractive to many people because of their spectacular phenomena and their amazing varieties and variability. This book offers general information on emission line stars, starting from a brief introduction to stellar astrophysics and then moving to a broad overview of emission line stars including early and late type stars as well as pre-main sequence stars.

Vistas in Astronomy, Volume 3 covers the spectacular and interesting developments in the field of astronomy. This book is organized into two main sections encompassing 18 chapters. The first part deals first with the forces that influence stellar dynamics, followed by intensive discussion on the rediscovery of planet Neptune, the concept of Einstein's light-deflection, and design requirements for large telescopes. This part also presents several astronomical instruments, Auroral investigation techniques, and observations of the Russian satellites. The second part starts with surveys of the developments of a photoelectric technique for determination of radial velocities. This part further examines the emission lines excitation in the spectra of early-type stars, as well as the color, luminosity, and evolution of the stars. Topics on star formation, galactic magnetic field, and aspects of cosmology are also covered. This book is an ideal source for astronomers, and space engineers and researchers.

How can the interior of the Sun, white dwarfs and other stars be studied by stellar seismology? What can Doppler imaging tell us about high-degree pulsations? What impact are CCD and infrared observations having on extending the Cepheid and RR Lyrae distance scale? And how are other classes of pulsators providing independent checks of the distance scale? These and many other critical questions are answered in this timely review of the dramatic advances made in pulsating star research in the last decade. This survey collects together more than thirty comprehensive reviews and over one hundred summaries of research papers from the 139th IAU Colloquium, held in Victoria, British Columbia. Together these cover all aspects of recent developments in the field of variable star research and preview some of the exciting advances anticipated for the next decade. This volume provides an essential review for graduate students and researchers.