Escape of Lyman continuum radiation from local galaxies

2013/02/28 by E. Leitet, Elisabet Leitet, N. Bergvall +5 · 177 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Context (archaeology) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Geography #Optics #Photon #Physics #Redshift #Universe #astro-ph.CO

paper · pdf · doi:10.1051/0004-6361/201118370

published in Astronomy and Astrophysics 553, A106 (EDP Sciences) · Accepted for publication in A&A. 16 pages, 7 pictures

arxiv created 2013/03/05 · openalex publication_date 2013/03/25 · arxiv updated 2015/06/15 · openalex created_date 2022/10/06 · openalex updated_date 2026/08/01

Abstract

Context. It has been suggested that the escape fraction of hydrogen ionizing photons (fesc) from galaxies is evolving with time, but the picture is far from clear. While evidence for significant escape fractions has been found at high redshifts in several studies, the picture looks different in the closer universe. The lack of local detections could in principle be a combined effect of an evolving escape fraction, the low number galaxies observed, the selection criteria of these targets, and technical problems associated with the instrument best adapted for low redshift targets, the Far Ultraviolet Spectroscopic Explorer (FUSE).

Citations

• LOWER-LUMINOSITY GALAXIES COULD REIONIZE THE UNIVERSE: VERY STEEP FAINT-END SLOPES TO THE UV LUMINOSITY FUNCTIONS AT z ⩾ 5-8 FROM THE HUDF09 WFC3/IR OBSERVATIONS
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• Analyzing low signal-to-noise FUSE spectra

Cited by

• Oxyster: A Circumgalactic Low-ionization Oxygen Nebula next to a Starburst Galaxy at z∼1