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Direct determination of quasar redshifts

Jos de Bruijne·Alastair Reynolds·Michael Perryman·Anthony Peacock·Fabio Favata·Nicola Rando·Didier Martin·Peter Verhoeve·Norbert Christlieb
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Abstract

We present observations of 11 quasars, selected in the range z = 2.2-4.1, obtained with ESA's Superconducting Tunnel Junction (STJ) camera on the WHT. Using a single template quasar spectrum, we show that we can determine the redshifts of these objects to about 1%. A follow-up spectroscopic observation of one QSO for which our best-fit redshift (z = 2.976) differs significantly from the tentative literature value (z ~ 2.30) confirms that the latter was incorrect.

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Jos de Bruijne, Alastair Reynolds, Michael Perryman, Anthony Peacock, Fabio Favata, Nicola Rando, Didier Martin, Peter Verhoeve, Norbert Christlieb. 2001-11-26. Direct determination of quasar redshifts. https://doi.org/10.1051/0004-6361%3A20011660

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