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Subject
- galactic center[remove]36
- photometry13
- infrared photometry11
- milky way galaxy11
- interstellar medium8
- molecular clouds6
- radio astronomy6
- infrared astronomy5
- extinction4
- millimeter astronomy4
- star forming regions4
- submillimeter astronomy4
- open star clusters3
- astrophysical masers2
- chemical abundances2
- gamma-ray astronomy2
- h ii regions2
- interferometry2
- metallicity2
- proper motions2
