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High-ion absorption in the proximate damped Lyman-alpha system toward Q0841+129
quasars: absorption lines – galaxies: high-redshift – galaxies: halos – galaxies: ISM
2011/10/8
We present VLT/UVES spectroscopy of the quasar Q0841+129, whose spectrum shows a proximate damped Lyman-alpha (PDLA) absorber at z=2.47621 and a proximate sub-DLA at z=2.50620, both lying close in red...
Extended Lyman-Alpha Emission around Star-forming Galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
Lyman-alpha (Lya) photons generated from reprocessed ionizing photons in star-forming galaxies, once escaping from the interstellar medium, can encounter resonant scatterings with neutral hydrogen ato...