Subject
- spectroscopy17
- astrophysical masers13
- molecular clouds13
- quasars13
- variable stars13
- protostars11
- very long baseline interferometry10
- be stars9
- catalogs9
- proper motions9
- radial velocity9
- late-type stars8
- redshifted8
- effective temperature7
- giant stars7
- h ii regions7
- polarimetry7
- spectroscopic binary stars7
- astronomical models6
- chemical abundances6
