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Subject
- hertzsprung russell diagram[remove]39
- photometry19
- optical astronomy13
- astronomical models10
- stellar evolutionary models10
- infrared photometry9
- globular star clusters8
- wide-band photometry7
- open star clusters6
- stellar mass loss6
- magellanic clouds5
- pre-main sequence stars5
- giant stars4
- stellar masses4
- astrometry3
- chemical abundances3
- extinction3
- galaxies3
- spectroscopy3
- stellar ages3
