Astrophysics (index)

Submillimeter Galaxy

(SMG, Submillimeter-Selected Galaxy, Dusty Star-Forming Galaxy, DSFG)
(galaxy that produces significant submillimeter radiation)

A Submillimeter Galaxy (SMG, or Submillimeter-Selected Galaxy or Dusty Star-Forming Galaxy, i.e., DSFG) is a Galaxy viewed mostly through submillimeter radiation. These include high Redshift (z) galaxies. Specifically, the 850 um Flux density is generally greater than 3-5 millijanskies. They are very luminous because of Star Formation (SF) rather than because they are Active Galactic Nucleus (AGN) galaxies. The spectrum typically seen is Black-Body Radiation from Cosmic Dust grains and Emission Lines from the gas in the Interstellar Medium (ISM).

An SMG is typically a massive starburst high-redshifted Elliptical Galaxy.


(galaxy type,quasars,EMR,infrared,submillimeter)
http://en.wikipedia.org/wiki/Submillimetre_astronomy
http://arxiv.org/abs/1101.0002

Referenced by:
GISMO
Spectral Flux Density (S)
Submillimeter Astronomy
Submillimeter Galaxy Designator

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