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DOE OSTI · 1713296

Preliminary Target Selection for the DESI Quasar (QSO) Sample

Yèche, Christophe (ORCID:0000000151468533)·Palanque-Delabrouille, Nathalie (ORCID:000000033188784X)·Claveau, Charles-Antoine·Brooks, David D. (ORCID:0000000284585047)·Chaussidon, Edmond·Davis, Tamara M. (ORCID:0000000242138783)·Dawson, Kyle S. (ORCID:0000000205533805)·Dey, Arjun (ORCID:0000000249284003)·Duan, Yutong (ORCID:0000000226110895)·Eftekharzadeh, Sarah (ORCID:0000000282818388)·Eisenstein, Daniel J.·Gaztañaga, Enrique (ORCID:0000000196320815)·Kehoe, Robert (ORCID:000000027101697X)·Landriau, Martin (ORCID:0000000318388528)·Lang, Dustin·Levi, Michael E. (ORCID:0000000318871018)·Meisner, Aaron M. (ORCID:0000000211257384)·Myers, Adam D.·Newman, Jeffrey A. (ORCID:0000000186842222)·Poppett, Claire·Prada, Francisco·Raichoor, Anand (ORCID:0000000159997923)·Schlegel, David J. (ORCID:0000000250425088)·Schubnell, Michael·Staten, Ryan·Tarlé, Gregory (ORCID:0000000317040781)·Zhou, Rongpu (ORCID:0000000153814372)
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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. In this work, 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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79 ASTRONOMY AND ASTROPHYSICSlarge-scale structuremachine-learningquasarssurveys

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Yèche, Christophe (ORCID:0000000151468533), Palanque-Delabrouille, Nathalie (ORCID:000000033188784X), Claveau, Charles-Antoine, Brooks, David D. (ORCID:0000000284585047), Chaussidon, Edmond, Davis, Tamara M. (ORCID:0000000242138783), Dawson, Kyle S. (ORCID:0000000205533805), Dey, Arjun (ORCID:0000000249284003), Duan, Yutong (ORCID:0000000226110895), Eftekharzadeh, Sarah (ORCID:0000000282818388), Eisenstein, Daniel J., Gaztañaga, Enrique (ORCID:0000000196320815), Kehoe, Robert (ORCID:000000027101697X), Landriau, Martin (ORCID:0000000318388528), Lang, Dustin, Levi, Michael E. (ORCID:0000000318871018), Meisner, Aaron M. (ORCID:0000000211257384), Myers, Adam D., Newman, Jeffrey A. (ORCID:0000000186842222), Poppett, Claire, Prada, Francisco, Raichoor, Anand (ORCID:0000000159997923), Schlegel, David J. (ORCID:0000000250425088), Schubnell, Michael, Staten, Ryan, Tarlé, Gregory (ORCID:0000000317040781), Zhou, Rongpu (ORCID:0000000153814372). 2020-10-13. Preliminary Target Selection for the DESI Quasar (QSO) Sample. https://doi.org/10.3847/2515-5172%2Fabc01a

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