Subject
- ultraviolet photometry6
- wide-band photometry6
- co line emission5
- galaxy classification systems4
- galaxy clusters4
- x-ray sources4
- molecular clouds3
- molecular physics3
- seyfert galaxies3
- ultraviolet astronomy3
- astronomical object identification2
- extinction2
- h ii regions2
- interferometry2
- stellar associations2
- astronomical models1
- ccd photometry1
- chemical abundances1
- galaxy kinematics1
- h i line emission1