Stars, Atmospheres, and Shells: Potential for High-Resolution imaging.
Substantial progress in stellar physics can result from one- or two-dimensional imaging at a spatial resolution of 10-3 to 10-5arc sec. The direct measurement of stellar diameters, surface and atmospheric features, and extended shells can significantly advance the knowledge of stellar structure, activity, and evolution. A dwarf star - the sun - and a supergiant star - Alpha Orionis - are used to illustrate the possibilities of measurements with high spatial resolution. In addition, magnetically sensitive lines can trace the distribution of activity across a stellar surface.
|Main Author:||Dupree, A. K.|
|Other Authors:||Baliunas, S. L., Guinan, E. F.|