The Lyman Continuum Escape Fraction at z 0.7

Details The Lyman Continuum Escape Fraction at z 0.7 The Lyman Continuum Escape Fraction at z 0.7

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21334805b&link_type=abstract

American Astronomical Society, AAS Meeting #213, #348.05; Bulletin of the American Astronomical Society, Vol. 41, p.484

Astronomy and Astrophysics

Astronomy

Scientific paper

Lyman continuum photons produced in massive starbursts likely played an important role in the reionization of the Universe. However, their contribution depends upon the fraction of ionizing radiation that escapes from the intrinsic opacity of the galaxies below the Lyman limit. We present the results of deep HST rest-frame, UV slitless spectroscopy of 14 z 0.7 Lyman break galaxy (LBG) analogs in the COSMOS field. While there are no
detections of the Lyman Continuum we achieve individual limits of 5-21% and a stacked limit for the escape fraction of <5%. These UV spectra from the ACS Solar Blind channel have achieved the deepest limits to date of the escape fraction in individual sources below z 1.

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