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A Lyman alpha halo around a quasar at redshift z=6.4
Chris J. Willott, Savironi Chet, Jacqueline Bergeron +1
We present long-slit spectroscopic data which reveals extended Lyman alpha emission around the z=6.417 radio-quiet quasar CFHQS J2329-0301. The Lyman alpha emission is extended ove…
Eddington-limited accretion and the black hole mass function at redshift 6
Chris J. Willott, Loic Albert, Doris Arzoumanian +7
We present discovery observations of a quasar in the Canada-France High-z Quasar Survey (CFHQS) at redshift z=6.44. We also use near-IR spectroscopy of nine CFHQS quasars at z~6 to…
The Canada-France High-z Quasar Survey: nine new quasars and the luminosity function at redshift 6
Chris J. Willott, Philippe Delorme, Celine Reyle +9
We present discovery imaging and spectroscopy for nine new z ~ 6 quasars found in the Canada-France High-z Quasar Survey (CFHQS) bringing the total number of CFHQS quasars to 19. B…
Extreme UV QSOs
Luciana Bianchi, John B. Hutchings, Boryana Efremova +3
We present a sample of spectroscopically confirmed QSOs with FUV-NUV color (as measured by GALEX photometry) bluer than canonical QSO templates and than the majority of known QSOs.…