Photometry of the intergalactic optical surface brightness in the Coma Cluster

Details Photometry of the intergalactic optical surface brightness in the Coma Cluster Photometry of the intergalactic optical surface brightness in the Coma Cluster

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....60..425m&link_type=abstract

Astronomy and Astrophysics, vol. 60, no. 3, Sept. 1977, p. 425-430.

Astronomy and Astrophysics

Astrophysics

23

Astronomical Photometry, Background Radiation, Galactic Clusters, Intergalactic Media, Luminous Intensity, Color, Cosmic Dust, Electrophotometry, Globular Clusters, Stellar Radiation

Scientific paper

Photoelectrical surface brightness measurements were made of the Coma Cluster of galaxies, to find the intensity and color of the intergalactic background light (IBL). Four plausible mechanisms underlying IBL are evaluated: (1) light from extended envelopes of galaxies; (2) light from dwarf galaxies, intergalactic globular clusters, or individual stars; (3) thermal bremsstrahlung from hot intergalactic gas; and (4) scattering of light from galaxies by intergalactic dust grains. Preference is accorded to mechanisms (1) and (2), and a 'significant' contribution by mechanism (4) is considered.

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