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Subject
- protostars[remove]40
- young stellar objects17
- interstellar medium14
- interferometry11
- infrared astronomy9
- photometry9
- pre-main sequence stars9
- infrared sources8
- infrared photometry5
- radio astronomy5
- millimeter astronomy4
- submillimeter astronomy4
- molecular clouds3
- radio spectroscopy3
- spectroscopy3
- astrophysical masers2
- catalogs2
- chemical abundances2
- co line emission2
- galaxies2
