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Subject
- open star clusters[remove]5
- photometry4
- infrared photometry3
- optical astronomy3
- magellanic clouds2
- apparent magnitude1
- galaxies1
- globular star clusters1
- infrared astronomy1
- infrared sources1
- late-type stars1
- morgan-keenan classification1
- pre-main sequence stars1
- spectroscopy1
- ultraviolet photometry1
- wide-band photometry1