Subject
- giant stars81
- astronomical object identification75
- stellar associations74
- galaxy rotation65
- metallicity63
- extinction58
- supernovae54
- h alpha photometry50
- co line emission49
- gravitational lensing49
- astrometry45
- surface photometry45
- planetary nebulae44
- absolute magnitude43
- stellar masses42
- interferometry36
- stars36
- observational astronomy34
- polarimetry33
- x-ray binary stars33
