Subject
- chemical abundances3
- giant stars3
- h ii regions3
- spectrophotometry3
- spectroscopic binary stars3
- apparent magnitude2
- astronomical object identification2
- interstellar medium2
- ob stars2
- polarimetry2
- pre-main sequence stars2
- proper motions2
- radio astronomy2
- stellar mass loss2
- ultraviolet astronomy2
- astronomical reference materials1
- carbon stars1
- eclipsing binary stars1
- emission line stars1
- h i line emission1
