Subject
- intergalactic medium5
- narrow band photometry5
- spectrophotometry5
- star forming regions5
- gravitational lensing4
- milky way galaxy4
- proper motions4
- astronomical reference materials3
- ccd photometry3
- h beta photometry3
- markarian galaxies3
- white dwarf stars3
- cataclysmic variable stars2
- galaxy planes2
- molecular clouds2
- planetary nebulae2
- simulation2
- stellar ages2
- supernova remnants2
- two-color diagrams2
