Subject
- absolute magnitude2
- apparent magnitude2
- asteroseismology2
- astrometry2
- galaxies2
- galaxy classification systems2
- giant stars2
- h alpha photometry2
- infrared sources2
- medium band photometry2
- molecular clouds2
- multiple stars2
- radio continuum emission2
- spectrophotometry2
- stellar populations2
- wolf-rayet stars2
- astronomical models1
- astrophysical masers1
- ccd photometry1
- co line emission1
