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American Astronomical Society, Research Notes of the American Astronomical Society, 10(4), p. 179, 2020

DOI: 10.3847/2515-5172/abc01a

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Preliminary Target Selection for the DESI Quasar (QSO) Sample

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

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 Lyα 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.