Astrophysics (index)

Galaxy SED

(Galaxy Spectral Energy Distribution)
(SED of a galaxy, sometimes synthesized from photometric surveys)

A Galaxy's Spectral Energy Distribution can be assembled through Spectrography, or through the Photometry of multiple Surveys. Sufficient surveys have been made that often there are 20 or more Passband data points per galaxy, and through processing, an approximation of its SED can be determined. This technique is of use for determining SED data for large numbers of galaxies, for statistical studies.