An upper limit to the extragalactic background light

Details An upper limit to the extragalactic background light An upper limit to the extragalactic background light

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226..609s&link_type=abstract

Astrophysical Journal, Part 1, vol. 226, Dec. 1, 1978, p. 609-612.

Astronomy and Astrophysics

Astrophysics

24

Background Radiation, Extraterrestrial Radiation, Galactic Evolution, Galactic Radiation, Sky Brightness, Astronomical Models, Background Noise, Extinction, Meteoroid Dust Clouds

Scientific paper

Mattila's (1976) dark-cloud method was used to search for a diffuse extragalactic background component in the optical surface brightness of the night sky near 4000 A. The dark nebula L134 was used as a photometric reference in which the extragalactic background is negligible. L134 was compared with nearby clear regions of sky. No positive detection was obtained; the 1-sigma upper limit is about 2.6 S(10) units = 4 x 10 to the -20th erg/sq cm per sec/sr per Hz (or a B surface brightness of 26.7 mag per sq arcsec). A more conservative 3-sigma limit is about 5 S(10) units. The implications of the present limit and that of Dube et al. (1977) for galaxy evolution and recent counts of faint field galaxies are discussed.

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