Subject
- spectroscopy26
- proper motions23
- solar system planets23
- astronomical object identification22
- infrared astronomy22
- chemical abundances21
- infrared sources21
- late-type stars19
- stellar spectral types19
- supergiant stars19
- cataclysmic variable stars18
- metallicity18
- young stellar objects18
- photographic photometry17
- giant stars16
- narrow band photometry16
- effective temperature15
- trigonometric parallax15
- x-ray sources13
- multiple stars12