Subject
- globular star clusters4
- h i line emission4
- halo stars4
- spectrophotometry4
- two-color diagrams4
- bl lacertae objects3
- cataclysmic variable stars3
- horizontal branch stars3
- intergalactic medium3
- novae3
- ob stars3
- seyfert galaxies3
- solar system planets3
- standard stars3
- asteroseismology2
- early-type stars2
- g stars2
- morgan-keenan classification2
- planetary nebulae2
- spectroscopic binary stars2