Blain, Andrew Institute of Astronomy, University of Cambridge, Cambridge, United Kingdom.
Last reviewed:February 2019
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- Radiation from interstellar molecules
- Radiation from grains of interstellar dust
- Observatories and telescopes
- Areas of study
- Evolution of galaxies
- Links to Primary Literature
- Additional Readings
Investigation of the universe by probing the electromagnetic spectrum at wavelengths from approximately 0.3 to 1.0 millimeter: the submillimeter waveband. This waveband is bounded at longer wavelengths by the millimeter waveband (1– 10 mm), and at shorter wavelengths by the far-infrared waveband [20–300 micrometers (μm)]. Obtaining an accurate view of the processes going on in stars and galaxies requires observations at a range of different wavelengths, with each available window often providing complementary information. Astronomical objects with temperatures between about 10 kelvins and several hundred kelvins, typically in the interstellar medium of galaxies, emit radiation strongly in the submillimeter waveband (Fig. 1). See also: Electromagnetic radiation; Temperature
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