Proceedings of the NATO Advanced Institute Held in Athens, September 8-19, 1969 Lyssimachos N. Mavridis ... These could very well be the external collapsing layers of a protostar ionized by the ultraviolet radiation of surrounding newborn O stars. ... derives from an analysis of the ratio of the intensities of the two emission lines at 1665 MHz and 1667 MHz, an excitation temperature of only 4 to 5K.
|Title||:||Structure and Evolution of the Galaxy|
|Author||:||Lyssimachos N. Mavridis|
|Publisher||:||D. Reidel - 1971|