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Subject
- astrometry1
- astronomical models4
- astrophysical masers1
- carbon stars1
- catalogs6
- chemical abundances2
- extinction1
- galaxies65
- galaxy classification systems4
- galaxy clusters6
- galaxy kinematics19
- galaxy rotation[remove]65
- giant stars2
- h i line emission6
- h ii regions1
- hertzsprung russell diagram1
- infrared photometry1
- infrared sources3
- interferometry2
- interstellar medium2
