Subject
- astrophysical masers220
- solar system201
- stellar evolutionary models188
- seyfert galaxies180
- stellar atmospheres180
- co line emission179
- magnetic fields179
- x-ray binary stars177
- peculiar variable stars163
- the sun163
- carbon stars159
- supergiant stars155
- galaxy planes152
- be stars149
- pulsars149
- h alpha photometry144
- g stars141
- optical observation128
- radio spectroscopy124
- spectrophotometry124
