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Preliminary Target Selection for the DESI Quasar (QSO) Sample
release_xs23dsjv2nddxelsgvxxowt4zm
by
Christophe Yèche,
Nathalie Palanque-Delabrouille,
Charles-Antoine Claveau,
David D. Brooks,
Edmond Chaussidon,
Tamara M. Davis,
Kyle S. Dawson,
Arjun Dey,
Yutong Duan,
Sarah Eftekharzadeh,
Daniel J. Eisenstein,
Enrique Gaztañaga
(+15 others)
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as a article
.
2020
Abstract
The DESI survey will measure large-scale structure using quasars as direct
tracers of dark matter in the redshift range 0.9<z<2.1 and using quasar
Ly-α forests at z>2.1. We present two methods to select candidate
quasars for DESI based on imaging in three optical (g, r, z) and two infrared
(W1, W2) bands. The first method uses traditional color cuts and the second
utilizes a machine-learning algorithm.
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arXiv
2010.11280v1
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