A Confirmation of the Optical EBL From HST Archival Data: First Results

Details A Confirmation of the Optical EBL From HST Archival Data: First Results A Confirmation of the Optical EBL From HST Archival Data: First Results

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.2002d&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #20.02; Bulletin of the American Astronomical Society, V

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Scientific paper

The optical extragalactic background light (EBL) currently exceeds the value from integrated galaxy counts. The unexplained component is, however, obtained from subtracting the zodiacal light (ZL) foreground from the raw background measurement. Many irregularities and free parameters remain in the ZL model, on which EBL determinations heavily depend. Here, we use archival ACS data to get a better handle on the periodic trends by looking at relatively empty areas of the sky imaged at different times throughout the year. Special attention is given to fluctuations of the background at periods other than a year, and to full-sky variability. We then discuss the implications of these results to the EBL uncertainties. Support for this work was provided by NASA through grant number AR-10950 from the Space Telescope Science Institute.

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