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The HST/LCO Measurement of the Optical Extragalactic Background Light

Published online by Cambridge University Press:  12 April 2016

R.A. Bernstein
R.A. Bernstein*
Affiliation:
Carnegie Observatories, 813 Santa Barbara St., Pasadena, CA 91101

Abstract

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We present the first detection of the mean flux of the optical extragalactic background light (EBL) at 3000, 5500, and 8000Å, derived from coordinated data sets from HST and Las Campanas Observatory. To isolate the extragalactic component, we have measured and subtracted the flux from foreground sources explicitly. In addition to detections in all three bands, we identify the minimum surface brightness contributed by resolved galaxies (23 < V < 28 AB mag) using a non-standard method of aperture photometry to which these data are uniquely suited. Individually resolved galaxies account for ~ 30% of the mean EBL coming from galaxies fainter than V = 23 AB mag. Taking into account the effective surface brightness detection limits of the deepest galaxy counts, and the results of LSB surveys at low redshift, the EBL we detect can be explained by galaxy populations already cataloged.

Type
Extra-galactic background light
Information
International Astronomical Union Colloquium , Volume 171: The Low Surface Brightness Universe , 1999 , pp. 341 - 348
Copyright
Copyright © Astronomical Society of the Pacific 1999

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