Discovery of a New High Redshift QSO at Z=5.96 with The Subaru Telescope

Details Discovery of a New High Redshift QSO at Z=5.96 with The Subaru Telescope Discovery of a New High Redshift QSO at Z=5.96 with The Subaru Telescope

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.0216g&link_type=abstract

American Astronomical Society Meeting 210, #02.16; Bulletin of the American Astronomical Society, Vol. 39, p.95

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report the discovery of a new high-redshift quasar at z = 5.96, observed with the long-slit Faint Object Camera and Spectrograph on board the Subaru Telescope. The spectrum shows strong and broad Lyα + N v emission lines with a sharp discontinuity to the blue side. A Lyβ + O vi emission line is also detected, providing a consistent redshift measurement with the Lyα + N v emission. The quasi-stellar object (QSO) has an absolute magnitude of MAB,1450 = -26.9 (H0 = 50 km s-1 Mpc-1, q0 = 0.5). The spectrum shows significant flux in the region 8000-8300 Å and thus does not show a complete Gunn-Peterson trough in the redshift range 5.58-5.82, along the line of sight to this z = 5.96 QSO. Therefore, the Universe was already highly ionized at z = 5.82.

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