Subject
- h alpha photometry1
- h i line emission3
- h ii regions1
- infrared astronomy12
- infrared photometry16
- infrared sources19
- interferometry16
- interstellar medium2
- line intensities3
- magellanic clouds2
- magnetic fields2
- markarian galaxies1
- milky way galaxy1
- millimeter astronomy5
- optical astronomy25
- optical observation1
- photometry34
- planetary nebulae1
- polarimetry12
- proper motions2