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Subject
- astronomical object identification2
- galaxies1
- galaxy planes1
- giant stars1
- globular star clusters1
- h ii regions2
- infrared astronomy5
- infrared photometry13
- infrared sources5
- late-type stars1
- magellanic clouds3
- milky way galaxy3
- millimeter astronomy1
- molecular clouds1
- morgan-keenan classification1
- photometry[remove]13
- planetary nebulae1
- pre-main sequence stars1
- stellar associations1
- submillimeter astronomy1