Subject
- ultraviolet astronomy11
- chemical abundances10
- h alpha photometry9
- infrared sources9
- radio sources9
- white dwarf stars9
- galaxy classification systems8
- magellanic clouds8
- millimeter astronomy8
- multiple stars8
- proper motions8
- redshifted / redshift8
- submillimeter astronomy8
- gamma-ray astronomy7
- h ii regions7
- hst photometry7
- line intensities7
- open star clusters7
- stellar spectral types7
- effective temperature6
