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Subject
- active galactic nuclei3
- astronomical models1
- b stars1
- be stars2
- catalogs1
- ccd photometry3
- chemical abundances2
- early-type stars1
- eclipsing binary stars1
- galaxies3
- h alpha photometry4
- h beta photometry[remove]12
- h ii regions3
- infrared photometry2
- interstellar reddening1
- medium band photometry2
- metallicity1
- narrow band photometry2
- open star clusters2
- optical astronomy12
