Subject
- g stars141
- stars140
- virtual-observatories139
- optical observation128
- radio spectroscopy126
- spectrophotometry125
- morgan-keenan classification121
- star119
- star forming regions119
- cataclysmic variable stars116
- emission line stars116
- novae115
- narrow band photometry114
- nebulae114
- absolute magnitude110
- ob stars107
- interstellar reddening104
- virtual observatory104
- spectral energy distribution103
- kron-cousins photometry102
