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Subject
- cataclysmic variable stars[remove]116
- photometry67
- optical astronomy38
- novae33
- variable stars26
- spectroscopy25
- infrared photometry21
- wide-band photometry20
- radial velocity16
- ccd photometry8
- eclipsing binary stars7
- sloan photometry7
- x-ray binary stars7
- x-ray sources7
- apparent magnitude6
- star atlases5
- stellar distance4
- surveys4
- white dwarf stars4
- line intensities3
