Subject
- morgan-keenan classification2
- multiple stars2
- narrow band photometry atomic spectroscopy2
- ob stars2
- observational-cosmology2
- photometric systems2
- protostars2
- pulsars2
- star formation2
- stellar atmospheric opacity2
- stellar mass loss2
- stellar radii2
- stellar-astronomy2
- astronomical-simulations1
- classification1
- clusters_of_galaxies1
- comets1
- dark matter1
- earth (planet)1
- extra-galactic stars1
