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arXiv · 1611.00036

The DESI Experiment Part I: Science,Targeting, and Survey Design

DESI Collaboration·Amir Aghamousa·Jessica Aguilar·Steve Ahlen·Shadab Alam·Lori E. Allen·Carlos Allende Prieto·James Annis·Stephen Bailey·Christophe Balland·Otger Ballester·Charles Baltay·Lucas Beaufore·Chris Bebek·Timothy C. Beers·Eric F. Bell·José Luis Bernal·Robert Besuner·Florian Beutler·Chris Blake·Hannes Bleuler·Michael Blomqvist·Robert Blum·Adam S. Bolton·Cesar Briceno·David Brooks·Joel R. Brownstein·Elizabeth Buckley-Geer·Angela Burden·Etienne Burtin·Nicolas G. Busca·Robert N. Cahn·Yan-Chuan Cai·Laia Cardiel-Sas·Raymond G. Carlberg·Pierre-Henri Carton·Ricard Casas·Francisco J. Castander·Jorge L. Cervantes-Cota·Todd M. Claybaugh·Madeline Close·Carl T. Coker·Shaun Cole·Johan Comparat·Andrew P. Cooper·M. -C. Cousinou·Martin Crocce·Jean-Gabriel Cuby·Daniel P. Cunningham·Tamara M. Davis·Kyle S. Dawson·Axel de la Macorra·Juan De Vicente·Timothée Delubac·Mark Derwent·Arjun Dey·Govinda Dhungana·Zhejie Ding·Peter Doel·Yutong T. Duan·Anne Ealet·Jerry Edelstein·Sarah Eftekharzadeh·Daniel J. Eisenstein·Ann Elliott·Stéphanie Escoffier·Matthew Evatt·Parker Fagrelius·Xiaohui Fan·Kevin Fanning·Arya Farahi·Jay Farihi·Ginevra Favole·Yu Feng·Enrique Fernandez·Joseph R. Findlay·Douglas P. Finkbeiner·Michael J. Fitzpatrick·Brenna Flaugher·Samuel Flender·Andreu Font-Ribera·Jaime E. Forero-Romero·Pablo Fosalba·Carlos S. Frenk·Michele Fumagalli·Boris T. Gaensicke·Giuseppe Gallo·Juan Garcia-Bellido·Enrique Gaztanaga·Nicola Pietro Gentile Fusillo·Terry Gerard·Irena Gershkovich·Tommaso Giannantonio·Denis Gillet·Guillermo Gonzalez-de-Rivera·Violeta Gonzalez-Perez·Shelby Gott·Or Graur·Gaston Gutierrez·Julien Guy
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Abstract

DESI (Dark Energy Spectroscopic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. To trace the underlying dark matter distribution, spectroscopic targets will be selected in four classes from imaging data. We will measure luminous red galaxies up to $z=1.0$. To probe the Universe out to even higher redshift, DESI will target bright [O II] emission line galaxies up to $z=1.7$. Quasars will be targeted both as direct tracers of the underlying dark matter distribution and, at higher redshifts ($ 2.1 < z < 3.5$), for the Ly-$α$ forest absorption features in their spectra, which will be used to trace the distribution of neutral hydrogen. When moonlight prevents efficient observations of the faint targets of the baseline survey, DESI will conduct a magnitude-limited Bright Galaxy Survey comprising approximately 10 million galaxies with a median $z\approx 0.2$. In total, more than 30 million galaxy and quasar redshifts will be obtained to measure the BAO feature and determine the matter power spectrum, including redshift space distortions.

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DESI Collaboration, Amir Aghamousa, Jessica Aguilar, Steve Ahlen, Shadab Alam, Lori E. Allen, Carlos Allende Prieto, James Annis, Stephen Bailey, Christophe Balland, Otger Ballester, Charles Baltay, Lucas Beaufore, Chris Bebek, Timothy C. Beers, Eric F. Bell, José Luis Bernal, Robert Besuner, Florian Beutler, Chris Blake, Hannes Bleuler, Michael Blomqvist, Robert Blum, Adam S. Bolton, Cesar Briceno, David Brooks, Joel R. Brownstein, Elizabeth Buckley-Geer, Angela Burden, Etienne Burtin, Nicolas G. Busca, Robert N. Cahn, Yan-Chuan Cai, Laia Cardiel-Sas, Raymond G. Carlberg, Pierre-Henri Carton, Ricard Casas, Francisco J. Castander, Jorge L. Cervantes-Cota, Todd M. Claybaugh, Madeline Close, Carl T. Coker, Shaun Cole, Johan Comparat, Andrew P. Cooper, M. -C. Cousinou, Martin Crocce, Jean-Gabriel Cuby, Daniel P. Cunningham, Tamara M. Davis, Kyle S. Dawson, Axel de la Macorra, Juan De Vicente, Timothée Delubac, Mark Derwent, Arjun Dey, Govinda Dhungana, Zhejie Ding, Peter Doel, Yutong T. Duan, Anne Ealet, Jerry Edelstein, Sarah Eftekharzadeh, Daniel J. Eisenstein, Ann Elliott, Stéphanie Escoffier, Matthew Evatt, Parker Fagrelius, Xiaohui Fan, Kevin Fanning, Arya Farahi, Jay Farihi, Ginevra Favole, Yu Feng, Enrique Fernandez, Joseph R. Findlay, Douglas P. Finkbeiner, Michael J. Fitzpatrick, Brenna Flaugher, Samuel Flender, Andreu Font-Ribera, Jaime E. Forero-Romero, Pablo Fosalba, Carlos S. Frenk, Michele Fumagalli, Boris T. Gaensicke, Giuseppe Gallo, Juan Garcia-Bellido, Enrique Gaztanaga, Nicola Pietro Gentile Fusillo, Terry Gerard, Irena Gershkovich, Tommaso Giannantonio, Denis Gillet, Guillermo Gonzalez-de-Rivera, Violeta Gonzalez-Perez, Shelby Gott, Or Graur, Gaston Gutierrez, Julien Guy. 2016-12-13. The DESI Experiment Part I: Science,Targeting, and Survey Design. https://arxiv.org/abs/1611.00036

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