submillimeter galaxy
English
Alternative forms
- submillimetre galaxy
Etymology
submillimeter + galaxy.From being a high-redshift galaxy whose emissions are primarily submillimetre-wave radiation (terahertz-radiation (T-wave/T-ray); electromagnetic radiation with wavelengths longer than infrared and shorter than microwave/radiowave).
Noun
submillimeter galaxy (plural submillimeter galaxies)
- (astronomy) A type of starburst galaxy that primarily emits radiation in the sub-mm/T-hertz range. Due to the extreme dustiness of the galaxy, they are visible mostly in infrared emissions at their redshift, which are subsequently redshifted into the submm/THz range by Hubble expansion.
Hypernyms
- starburst galaxy
- galaxy
Coordinate terms
- compact elliptical galaxy / compact elliptical (cE/CEG) (the type of galaxy that submillimeter galaxies evolve into, at lower redshifts (z))