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Subject
- infrared astronomy[remove]16
- infrared sources13
- infrared photometry6
- photometry6
- spectroscopy5
- young stellar objects3
- surveys2
- asteroids1
- be stars1
- early-type stars1
- galaxy clusters1
- galaxy planes1
- interstellar medium1
- line intensities1
- milky way galaxy1
- nebulae1
- observational astronomy1
- optical astronomy1
- quasars1
- solar system1