2011/06/28 by E. Leitet, N. Bergvall, N. Piskunov +2 · 2 citations
Engineering · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #CCD and CMOS Imaging Sensors #Context (archaeology) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Optics #Photon #Physics #Redshift #Reionization #Spectral line #astro-ph.CO
paper · pdf · doi:10.1051/0004-6361/201015654
Accepted for publication in A&A. 15 pages, 13 figures
openalex publication_date 2011/06/28 · arxiv created 2011/07/04 · arxiv updated 2015/05/28 · openalex created_date 2022/08/20 · openalex updated_date 2026/08/05
Context. Galaxies are believed to be the main providers of Lyman continuum (LyC) photons during the early phases of the cosmic reionization. Little is known however, when it comes to escape fractions and the mechanisms behind the leakage. To learn more, one may look at local objects, but so far only one low-z galaxy has shown any signs of emitting LyC radiation. With data from the Far Ultraviolet Spectroscopic Explorer (FUSE), we previously found an absolute escape fraction of ionizing photons (fesc) of 4–10% for the blue compact galaxy Haro 11. However, using a revised version of the reduction pipeline on the same data set, Grimes and collaborators were unable to confirm this and derived an upper limit of fesc ≲ 2% .