TY - JOUR
T1 - Fluorescent Lyman α emission from gas near a QSO at redshift 4.28
AU - Francis, Paul J.
AU - McDonnell, Sunsanee
PY - 2006/8
Y1 - 2006/8
N2 - We use integral field spectroscopy with the Gemini North Telescope to detect probable fluorescent Lyman α (Lyα) emission from gas lying close to the luminous QSO PSS 2155+1358 at redshift 4.28. The emission is most likely coming not from primordial gas, but from a multiphase, chemically enriched cloud of gas lying about 50 kpc from the QSO. It appears to be associated with a highly ionized associated absorber seen in the QSO spectrum. With the exception of this gas cloud, the environment of the QSO is remarkably free of neutral hydrogen. We also marginally detect Lyα emission from a foreground subdamped Lyα absorption-line system.
AB - We use integral field spectroscopy with the Gemini North Telescope to detect probable fluorescent Lyman α (Lyα) emission from gas lying close to the luminous QSO PSS 2155+1358 at redshift 4.28. The emission is most likely coming not from primordial gas, but from a multiphase, chemically enriched cloud of gas lying about 50 kpc from the QSO. It appears to be associated with a highly ionized associated absorber seen in the QSO spectrum. With the exception of this gas cloud, the environment of the QSO is remarkably free of neutral hydrogen. We also marginally detect Lyα emission from a foreground subdamped Lyα absorption-line system.
KW - Galaxies: high-redshift
KW - Intergalactic medium
KW - Quasars: absorption lines
KW - Quasars: individual: PSS 2155+1358
UR - http://www.scopus.com/inward/record.url?scp=33746576198&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2006.10551.x
DO - 10.1111/j.1365-2966.2006.10551.x
M3 - Article
SN - 0035-8711
VL - 370
SP - 1372
EP - 1378
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -