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The Dark Energy Spectroscopic Instrument (DESI), a multiplexed fiber-fed spectrograph, is a Stage-IV ground-based dark energy experiment aiming to measure redshifts for 29 million Emission-Line Galaxies (ELG), 4 million Luminous Red…
Cosmology and Nongalactic Astrophysics · Physics
2017-04-12
Lucas Pinol , Robert N. Cahn , Nick Hand , Uros Seljak , Martin White
The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the universe using the Baryon Acoustic Oscillation (BAO) technique. The spectra of 35 million galaxies and quasars over $14000…
Instrumentation and Methods for Astrophysics · Physics
2019-08-20
Yutong Duan , Joseph H. Silber , Todd M. Claybaugh , Steven P. Ahlen , David Brooks , Gregory Tarlè
The Dark Energy Spectroscopic Instrument (DESI) survey is a spectroscopic survey of tens of millions of galaxies at $0 < z < 3.5$ covering 14,000 square degrees of the sky. In its first 1.1 years of survey operations, it has observed more…
Cosmology and Nongalactic Astrophysics · Physics
2024-02-16
E. F. Schlafly , D. Kirkby , D. J. Schlegel , A. D. Myers , A. Raichoor , K. Dawson , J. Aguilar , C. Allende Prieto , S. Bailey , S. BenZvi , J. Bermejo-Climent , D. Brooks , A. de la Macorra , Arjun Dey , P. Doel , K. Fanning , A. Font-Ribera , J. E. Forero-Romero , J. García-Bellido , S. Gontcho A Gontcho , J. Guy , C. Hahn , K. Honscheid , M. Ishak , S. Juneau , R. Kehoe , T. Kisner , A. Kremin , M. Landriau , D. A. Lang , J. Lasker , M. E. Levi , C. Magneville , C. J. Manser , P. Martini , A. M. Meisner , R. Miquel , J. Moustakas , J. A. Newman , Jundan Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , C. Rockosi , A. J. Ross , G. Rossi , G. Tarlé , B. A. Weaver , C. Yèche , R. Zhou
In the large-scale, Dark Energy Spectroscopic Instrument (DESI), thousands of fiber positioners will be used. Those are robotic positioners, with two axis, and having the size of a pen. They are tightly packed on the focal plane of the…
Instrumentation and Methods for Astrophysics · Physics
2015-06-23
Laurent Jenni , Philipp Hörler , Laleh Makarem , Jean-Paul Kneib , Denis Gillet , Hannes Bleuler , Mohamed Bouri , Francisco Prada , Guillermo De Rivera , Justo Sanchez
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…
Instrumentation and Methods for Astrophysics · Physics
2016-12-14
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 , Salman Habib , Henry Heetderks , Ian Heetderks , Katrin Heitmann , Wojciech A. Hellwing , David A. Herrera , Shirley Ho , Stephen Holland , Klaus Honscheid , Eric Huff , Timothy A. Hutchinson , Dragan Huterer , Ho Seong Hwang , Joseph Maria Illa Laguna , Yuzo Ishikawa , Dianna Jacobs , Niall Jeffrey , Patrick Jelinsky , Elise Jennings , Linhua Jiang , Jorge Jimenez , Jennifer Johnson , Richard Joyce , Eric Jullo , Stéphanie Juneau , Sami Kama , Armin Karcher , Sonia Karkar , Robert Kehoe , Noble Kennamer , Stephen Kent , Martin Kilbinger , Alex G. Kim , David Kirkby , Theodore Kisner , Ellie Kitanidis , Jean-Paul Kneib , Sergey Koposov , Eve Kovacs , Kazuya Koyama , Anthony Kremin , Richard Kron , Luzius Kronig , Andrea Kueter-Young , Cedric G. Lacey , Robin Lafever , Ofer Lahav , Andrew Lambert , Michael Lampton , Martin Landriau , Dustin Lang , Tod R. Lauer , Jean-Marc Le Goff , Laurent Le Guillou , Auguste Le Van Suu , Jae Hyeon Lee , Su-Jeong Lee , Daniela Leitner , Michael Lesser , Michael E. Levi , Benjamin L'Huillier , Baojiu Li , Ming Liang , Huan Lin , Eric Linder , Sarah R. Loebman , Zarija Lukić , Jun Ma , Niall MacCrann , Christophe Magneville , Laleh Makarem , Marc Manera , Christopher J. Manser , Robert Marshall , Paul Martini , Richard Massey , Thomas Matheson , Jeremy McCauley , Patrick McDonald , Ian D. McGreer , Aaron Meisner , Nigel Metcalfe , Timothy N. Miller , Ramon Miquel , John Moustakas , Adam Myers , Milind Naik , Jeffrey A. Newman , Robert C. Nichol , Andrina Nicola , Luiz Nicolati da Costa , Jundan Nie , Gustavo Niz , Peder Norberg , Brian Nord , Dara Norman , Peter Nugent , Thomas O'Brien , Minji Oh , Knut A. G. Olsen , Cristobal Padilla , Hamsa Padmanabhan , Nikhil Padmanabhan , Nathalie Palanque-Delabrouille , Antonella Palmese , Daniel Pappalardo , Isabelle Pâris , Changbom Park , Anna Patej , John A. Peacock , Hiranya V. Peiris , Xiyan Peng , Will J. Percival , Sandrine Perruchot , Matthew M. Pieri , Richard Pogge , Jennifer E. Pollack , Claire Poppett , Francisco Prada , Abhishek Prakash , Ronald G. Probst , David Rabinowitz , Anand Raichoor , Chang Hee Ree , Alexandre Refregier , Xavier Regal , Beth Reid , Kevin Reil , Mehdi Rezaie , Constance M. Rockosi , Natalie Roe , Samuel Ronayette , Aaron Roodman , Ashley J. Ross , Nicholas P. Ross , Graziano Rossi , Eduardo Rozo , Vanina Ruhlmann-Kleider , Eli S. Rykoff , Cristiano Sabiu , Lado Samushia , Eusebio Sanchez , Javier Sanchez , David J. Schlegel , Michael Schneider , Michael Schubnell , Aurélia Secroun , Uros Seljak , Hee-Jong Seo , Santiago Serrano , Arman Shafieloo , Huanyuan Shan , Ray Sharples , Michael J. Sholl , William V. Shourt , Joseph H. Silber , David R. Silva , Martin M. Sirk , Anze Slosar , Alex Smith , George F. Smoot , Debopam Som , Yong-Seon Song , David Sprayberry , Ryan Staten , Andy Stefanik , Gregory Tarle , Suk Sien Tie , Jeremy L. Tinker , Rita Tojeiro , Francisco Valdes , Octavio Valenzuela , Monica Valluri , Mariana Vargas-Magana , Licia Verde , Alistair R. Walker , Jiali Wang , Yuting Wang , Benjamin A. Weaver , Curtis Weaverdyck , Risa H. Wechsler , David H. Weinberg , Martin White , Qian Yang , Christophe Yeche , Tianmeng Zhang , Gong-Bo Zhao , Yi Zheng , Xu Zhou , Zhimin Zhou , Yaling Zhu , Hu Zou , Ying Zu
The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 square degrees…
Instrumentation and Methods for Astrophysics · Physics
2018-07-26
Timothy N. Miller , Robert W. Besuner , Michael E. Levi , Michael Lampton , Patrick Jelinsky , Henry Heetderks , David J. Schlegel , Jerry Edelstein , Peter Doel , David Brooks , Stephen Kent , Gary Poczulp , Michael J. Sholl
The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be our only hope to unravel these long-standing mysteries. In…
Cosmology and Nongalactic Astrophysics · Physics
2025-05-09
Robert Besuner , Arjun Dey , Alex Drlica-Wagner , Haruki Ebina , Guillermo Fernandez Moroni , Simone Ferraro , Jaime Forero-Romero , Klaus Honscheid , Pat Jelinsky , Dustin Lang , Michael Levi , Paul Martini , Adam Myers , Nathalie Palanque-Delabrouille , Swayamtrupta Panda , Claire Poppett , Noah Sailer , David Schlegel , Arman Shafieloo , Joseph Silber , Martin White , Timothy Abbott , Lori Allen , Santiago Avila , Roberto Avilés , Stephen Bailey , Abby Bault , Mohamed Bouri , Konstantina Boutsia , Eienne Burtin , Fernando Chierchie , William Coulton , Kyle Dawson , Biprateep Dey , Olivier Doré , Patrick Dunlop , Daniel Eisenstein , Castorina Emanuele , Stephanie Escoffier , Juan Estrada , Parker Fagrelius , Kevin Fanning , Timothy Fanning , Andreu Font-Ribera , Joshua Frieman , Malak Galal , Vera Gluscevic , Satya Gontcho A Gontcho , Daniel Green , Gaston Gutierrez , Julien Guy , Kevan Hashemi , Steve Heathcote , Steve Holland , Jiamin Hou , Dragan Huterer , Blas Irigoyen Gimenez , Mikhail Ivanov , Richard Joyce , Eric Jullo , Stephanie Juneau , Claire Juramy , Armin Karcher , Stephen Kent , David Kirkby , Jean-Paul Kneib , Elisabeth Krause , Alex Krolewski , Ofer Lahav , Agustin Lapi , Alexie Leauthaud , Matthew Lewandowski , Ting Li , Kenneth Lin , Marilena Loverde , Sean MacBride , Christophe Magneville , Jennifer Marshall , Patrick McDonald , Timothy Miller , John Moustakas , Moritz Münchmeyer , Joan Najita , Jeff Newman , Will Percival , Oliver Philcox , Priscila Pires , Anand Raichoor , Brandon Roach , Constance Rockosi , Maxime Rombach , Ashley Ross , Eusebio Sanchez , Luke Schmidt , Michael Schubnell , Rebekah Sebok , Uros Seljak , Eva Silverstein , Zachay Slepian , Chris Stone , Robert Stupak , Gregory Tarlé , Ting Li , Luke Tyas , Mariana Vargas-Magaña , Alistair Walker , Nicholas Wenner , Christophe Yèche , Yuanyuan Zhang , Rongpu Zhou
The Dark Energy Spectroscopic Instrument (DESI) is a Stage IV ground-based dark energy experiment that will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies…
Instrumentation and Methods for Astrophysics · Physics
2021-01-29
Robert Besuner , Lori Allen , Charles Baltay , David Brooks , Pierre-Henri Carton , Peter Doel , John Donaldson , Yutong Duan , Patrick Dunlop , Jerry Edelstein , Matt Evatt , Parker Fagrelius , Enrique Gaztañaga , Derek Guenther , Gaston Gutierrez , Michael Hawes , Klaus Honscheid , Pat Jelinsky , Richard Joyce , Armin Karcher , Martin Landriau , Michael Levi , Christophe Magneville , Robert Marshall , Paul Martini , Daniel Pappalardo , Claire Poppett , Francisco Prada , Ashley J. Ross , Michael Schubnell , Ray Sharples , William Shourt , Joseph Silber , David Sprayberry , Bob Stupak , Gregory Tarle , Kai Zhang
Massive spectroscopic survey are becoming trendy in astrophysics and cosmology, as they can address new fundamental knowledge such as Galactic Archaeology and probe the nature of the mysterious Dark Energy. To enable massive spectroscopic…
Instrumentation and Methods for Astrophysics · Physics
2015-06-23
N. Fahim , F. Prada , J. P. Kneib , J. Sánchez , P. Hórler , M. Azzaro , S. Becerril , H. Bleuler , M. Bouri , J. Castano , J. Garrido , D. Gillet , G. Glez-de-Rivera , C. Gómez , M. A. Gómez , A. Gonzalez-Arroyo , L. Jenni , L. Makarem , G. Yepes , X. Arrillaga , MA. Carrera , R. Diego , M. Charif , M. Hug , C. Lachat
The Dark Energy Spectroscopic Instrument (DESI) survey will provide optical spectra for $\sim 3$ million quasars. Accurate redshifts for these quasars will facilitate a broad range of science applications. Here we provide improved systemic…
In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5-year spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional structure of the universe between $z=0$ and $z\approx4$.…
Cosmology and Nongalactic Astrophysics · Physics
2026-03-06
DESI Collaboration , M. Abdul Karim , A. G. Adame , D. Aguado , J. Aguilar , S. Ahlen , S. Alam , G. Aldering , D. M. Alexander , R. Alfarsy , L. Allen , C. Allende Prieto , O. Alves , A. Anand , U. Andrade , E. Armengaud , S. Avila , A. Aviles , H. Awan , S. Bailey , A. Baleato Lizancos , O. Ballester , A. Bault , J. Bautista , R. Bean , J. Behera , S. BenZvi , L. Beraldo e Silva , J. R. Bermejo-Climent , F. Beutler , D. Bianchi , C. Blake , R. Blum , A. S. Bolton , M. Bonici , S. Brieden , A. Brodzeller , D. Brooks , E. Buckley-Geer , E. Burtin , A. Byström , R. Canning , A. Carnero Rosell , A. Carr , P. Carrilho , L. Casas , F. J. Castander , R. Cereskaite , J. L. Cervantes-Cota , E. Chaussidon , J. Chaves-Montero , S. Chen , X. Chen , C. Circosta , T. Claybaugh , S. Cole , A. P. Cooper , M. -C. Cousinou , A. Cuceu , T. M. Davis , K. S. Dawson , R. de Belsunce , R. de la Cruz , A. de la Macorra , A. de Mattia , N. Deiosso , J. Della Costa , R. Demina , U. Demirbozan , J. DeRose , A. Dey , B. Dey , J. Ding , Z. Ding , P. Doel , K. Douglass , M. Dowicz , H. Ebina , J. Edelstein , D. J. Eisenstein , W. Elbers , N. Emas , S. Escoffier , P. Fagrelius , X. Fan , K. Fanning , G. Favole , V. A. Fawcett , E. Fernández-García , S. Ferraro , N. Findlay , A. Font-Ribera , J. E. Forero-Romero , D. Forero-Sánchez , C. S. Frenk , B. T. Gänsicke , L. Galbany , J. García-Bellido , C. Garcia-Quintero , L. H. Garrison , E. Gaztañaga , H. Gil-Marín , A. Gloudemans , O. Y. Gnedin , S. Gontcho A Gontcho , D. Gonzalez , A. X. Gonzalez-Morales , V. Gonzalez-Perez , C. Gordon , O. Graur , D. Green , D. Gruen , R. Gsponer , C. Guandalin , G. Gutierrez , J. Guy , C. Hahn , J. J. Han , J. Han , S. He , H. K. Herrera-Alcantar , S. Heydenreich , K. Honscheid , J. Hou , C. Howlett , D. Huterer , V. Iršič , M. Ishak , A. Jacques , L. Jiang , J. Jimenez , Y. P. Jing , B. Joachimi , S. Joudaki , R. Joyce , E. Jullo , S. Juneau , N. G. Karaçaylı , T. Karim , R. Kehoe , S. Kent , A. Khederlarian , D. Kirkby , T. Kisner , F. -S. Kitaura , N. Kizhuprakkat , H. Kong , S. E. Koposov , A. Kremin , A. Krolewski , O. Lahav , Y. Lai , C. Lamman , T. -W. Lan , M. Landriau , D. Lang , J. U. Lange , J. Lasker , J. M. Le Goff , L. Le Guillou , A. Leauthaud , M. E. Levi , S. Li , T. S. Li , W. Liu , K. Lodha , M. Lokken , Y. Luo , Y. Luo , C. Magneville , M. Manera , C. J. Manser , D. Margala , P. Martini , M. Maus , J. McCullough , P. McDonald , G. E. Medina , L. Medina-Varela , A. Meisner , J. Mena-Fernández , A. Menegas , J. Meneses-Rizo , M. Mezcua , R. Miquel , P. Montero-Camacho , J. Moon , J. Moustakas , A. Muñoz-Gutiérrez , D. Muñoz-Santos , A. D. Myers , J. Myles , S. Nadathur , J. Najita , L. Napolitano , J. A. Newman , F. Nikakhtar , R. Nikutta , G. Niz , H. E. Noriega , P. Nugent , N. Padmanabhan , E. Paillas , N. Palanque-Delabrouille , A. Palmese , J. Pan , Z. Pan , D. Parkinson , J. A. Peacock , M. P. Ibanez , W. J. Percival , A. Pérez-Fernández , I. Pérez-Ràfols , P. Peterson , J. Piat , M. M. Pieri , M. Pinon , C. Poppett , A. Porredon , F. Prada , R. Pucha , F. Qin , D. Rabinowitz , A. Raichoor , C. Ramírez-Pérez , S. Ramirez-Solano , M. Rashkovetskyi , C. Ravoux , B. Ried Guachalla , A. H. Riley , A. Rocher , C. Rockosi , J. Rohlf , A. J. Rosado-Marín , A. J. Ross , C. Ross , G. Rossi , R. Ruggeri , V. Ruhlmann-Kleider , C. G. Sabiu , K. Said , N. Sailer , A. Saintonge , Y. Salcedo Hernandez , L. Samushia , E. Sanchez , N. Sanders , N. Sandford , S. Satyavolu , C. Saulder , A. K. Saydjari , E. F. Schlafly , D. Schlegel , D. Scholte , M. Schubnell , A. Semenaite , H. Seo , A. Shafieloo , R. Sharples , J. Silber , F. Sinigaglia , M. Siudek , Z. Slepian , A. Smith , M. Soumagnac , D. Sprayberry , J. Suárez-Pérez , J. Swanson , T. Tan , G. Tarlé , P. Taylor , G. Thomas , R. Tojeiro , R. J. Turner , W. Turner , L. A. Ureña-López , R. Vaisakh , M. Valluri , G. Valogiannis , M. Vargas-Magaña , L. Verde , P. Vielzeuf , M. Walther , B. Wang , M. S. Wang , W. Wang , B. A. Weaver , N. Weaverdyck , R. H. Wechsler , D. H. Weinberg , M. White , A. Whitford , M. Wolfson , J. Yang , C. Yèche , S. Youles , J. Yu , S. Yuan , E. A. Zaborowski , P. Zarrouk , H. Zhang , C. Zhao , R. Zhao , Z. Zheng , C. Zhou , R. Zhou , Y. Zhou , H. Zou , S. Zou , Y. Zu
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The…
Cosmology and Nongalactic Astrophysics · Physics
2024-01-17
DESI Collaboration , A. G. Adame , J. Aguilar , S. Ahlen , S. Alam , G. Aldering , D. M. Alexander , R. Alfarsy , C. Allende Prieto , M. Alvarez , O. Alves , A. Anand , F. Andrade-Oliveira , E. Armengaud , J. Asorey , S. Avila , A. Aviles , S. Bailey , A. Balaguera-Antolínez , O. Ballester , C. Baltay , A. Bault , J. Bautista , J. Behera , S. F. Beltran , S. BenZvi , L. Beraldo e Silva , J. R. Bermejo-Climent , A. Berti , R. Besuner , F. Beutler , D. Bianchi , C. Blake , R. Blum , A. S. Bolton , S. Brieden , A. Brodzeller , D. Brooks , Z. Brown , E. Buckley-Geer , E. Burtin , L. Cabayol-Garcia , Z. Cai , R. Canning , L. Cardiel-Sas , A. Carnero Rosell , F. J. Castander , J. L. Cervantes-Cota , S. Chabanier , E. Chaussidon , J. Chaves-Montero , S. Chen , C. Chuang , T. Claybaugh , S. Cole , A. P. Cooper , A. Cuceu , T. M. Davis , K. Dawson , R. de Belsunce , R. de la Cruz , A. de la Macorra , A. de Mattia , R. Demina , U. Demirbozan , J. DeRose , A. Dey , B. Dey , G. Dhungana , J. Ding , Z. Ding , P. Doel , R. Doshi , K. Douglass , A. Edge , S. Eftekharzadeh , D. J. Eisenstein , A. Elliott , S. Escoffier , P. Fagrelius , X. Fan , K. Fanning , V. A. Fawcett , S. Ferraro , J. Ereza , B. Flaugher , A. Font-Ribera , D. Forero-Sánchez , J. E. Forero-Romero , C. S. Frenk , B. T. Gänsicke , L. Á. García , J. García-Bellido , C. Garcia-Quintero , L. H. Garrison , H. Gil-Marín , J. Golden-Marx , S. Gontcho A Gontcho , A. X. Gonzalez-Morales , V. Gonzalez-Perez , C. Gordon , O. Graur , D. Green , D. Gruen , J. Guy , B. Hadzhiyska , C. Hahn , J. J. Han , M. M. S Hanif , H. K. Herrera-Alcantar , K. Honscheid , J. Hou , C. Howlett , D. Huterer , V. Iršič , M. Ishak , A. Jana , L. Jiang , J. Jimenez , Y. P. Jing , S. Joudaki , R. Joyce , E. Jullo , S. Juneau , N. Kizhuprakkat , N. G. Karaçaylı , T. Karim , R. Kehoe , S. Kent , A. Khederlarian , S. Kim , D. Kirkby , T. Kisner , F. Kitaura , J. Kneib , S. E. Koposov , A. Kovács , A. Kremin , A. Krolewski , B. L'Huillier , O. Lahav , A. Lambert , C. Lamman , T. -W. Lan , M. Landriau , D. Lang , J. U. Lange , J. Lasker , L. Le Guillou , A. Leauthaud , M. E. Levi , T. S. Li , E. Linder , A. Lyons , C. Magneville , M. Manera , C. J. Manser , D. Margala , P. Martini , P. McDonald , G. E. Medina , L. Medina-Varela , A. Meisner , J. Mena-Fernández , J. Meneses-Rizo , M. Mezcua , R. Miquel , P. Montero-Camacho , J. Moon , S. Moore , J. Moustakas , E. Mueller , J. Mundet , A. Muñoz-Gutiérrez , A. D. Myers , S. Nadathur , L. Napolitano , R. Neveux , J. A. Newman , J. Nie , G. Niz , P. Norberg , H. E. Noriega , E. Paillas , N. Palanque-Delabrouille , A. Palmese , P. Zhiwei , D. Parkinson , S. Penmetsa , W. J. Percival , A. Pérez-Fernández , I. Pérez-Ràfols , M. Pieri , C. Poppett , A. Porredon , F. Prada , R. Pucha , A. Raichoor , C. Ramírez-Pérez , S. Ramirez-Solano , M. Rashkovetskyi , C. Ravoux , A. Rocher , C. Rockosi , A. J. Ross , G. Rossi , R. Ruggeri , V. Ruhlmann-Kleider , C. G. Sabiu , K. Said , A. Saintonge , L. Samushia , E. Sanchez , C. Saulder , E. Schaan , E. F. Schlafly , D. Schlegel , D. Scholte , M. Schubnell , H. Seo , A. Shafieloo , R. Sharples , W. Sheu , J. Silber , F. Sinigaglia , M. Siudek , Z. Slepian , A. Smith , D. Sprayberry , L. Stephey , J. Suárez-Pérez , Z. Sun , T. Tan , G. Tarlé , R. Tojeiro , L. A. Ureña-López , R. Vaisakh , D. Valcin , F. Valdes , M. Valluri , M. Vargas-Magaña , A. Variu , L. Verde , M. Walther , B. Wang , M. S. Wang , B. A. Weaver , N. Weaverdyck , R. H. Wechsler , M. White , Y. Xie , J. Yang , C. Yèche , J. Yu , S. Yuan , H. Zhang , Z. Zhang , C. Zhao , Z. Zheng , R. Zhou , Z. Zhou , H. Zou , S. Zou , Y. Zu
The Dark Energy Spectroscopic Instrument, consisting of 5020 robotic fiber positioners and associated systems on the Mayall telescope at Kitt Peak, Arizona, is carrying out a survey to measure the spectra of 40 million galaxies and quasars…
Instrumentation and Methods for Astrophysics · Physics
2023-10-05
S. Kent , E. Neilsen , K. Honscheid , D. Rabinowitz , E. F. Schlafly , J. Guy , D. Schlegel , J. Garcia-Bellido , T. S. Li , E. Sanchez , Joseph Harry Silber , J. Aguilar , S. Ahlen , D. Brooks , T. Claybaugh , A. de la Macorra , P. Doel , D. J. Eisenstein , K. Fanning , A. Font-Ribera , J. E. Forero-Romero , S. Gontcho A Gontcho , J. Jimenez , D. Kirkby , T. Kisner , Anthony Kremin , M. Landriau , L. Le Guillou , Michael E. Levi , C. Magneville , M. Manera , Paul Martini , Aaron M. Meisner , R. Miquel , J. Moustakas , J. Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , M. Rezaie , A. J. Ross , G. Rossi , M. Schubnell , H. Seo , Gregory Tarle , B. A. Weaver , Rongpu Zhou , Zhimin Zhou , H. Zou
In 2021 May, the Dark Energy Spectroscopic Instrument (DESI) began a 5 yr survey of approximately 50 million total extragalactic and Galactic targets. The primary DESI dark-time targets are emission line galaxies (ELGs), luminous red…
Instrumentation and Methods for Astrophysics · Physics
2023-01-18
Adam D. Myers , John Moustakas , Stephen Bailey , Benjamin A. Weaver , Andrew P. Cooper , Jaime E. Forero-Romero , Bela Abolfathi , David M. Alexander , David Brooks , Edmond Chaussidon , Chia-Hsun Chuang , Kyle Dawson , Arjun Dey , Biprateep Dey , Govinda Dhungana , Peter Doel , Kevin Fanning , Enrique Gaztañaga , Satya Gontcho A Gontcho , Alma X. Gonzalez-Morales , ChangHoon Hahn , Hiram K. Herrera-Alcantar , Klaus Honscheid , Mustapha Ishak , Tanveer Karim , David Kirkby , Theodore Kisner , Sergey E. Koposov , Anthony Kremin , Ting-Wen Lan , Martin Landriau , Dustin Lang , Michael E. Levi , Christophe Magneville , Lucas Napolitano , Paul Martini , Aaron Meisner , Jeffrey A. Newman , Nathalie Palanque-Delabrouille , Will Percival , Claire Poppett , Francisco Prada , Anand Raichoor , Ashley J. Ross , Edward F. Schlafly , David Schlegel , Michael Schubnell , Ting Tan , Gregory Tarle , Michael J. Wilson , Christophe Yèche , Rongpu Zhou , Zhimin Zhou , Hu Zou
Deep spectroscopic samples can be used to improve photometric redshift (photo-$z$) estimates and reduce uncertainties on redshift distributions. Such improvements can increase the cosmological constraining power of large imaging-based…
Instrumentation and Methods for Astrophysics · Physics
2026-04-08
Biprateep Dey , Jeffrey A. Newman , Tianqing Zhang , J. Aguilar , S. Ahlen , A. Anand , B. Andrews , S. Bailey , D. Bianchi , D. Brooks , F. J. Castander , T. Claybaugh , A. Cuceu , K. S. Dawson , A. de la Macorra , J. Della Costa , Arjun Dey , P. Doel , S. Ferraro , A. Font-Ribera , E. Gaztañaga , Satya Gontcho A Gontcho , D. Gruen , G. Gutierrez , J. Guy , H. K. Herrera-Alcantar , K. Honscheid , M. Ishak , R. Joyce , R. Kehoe , D. Kirkby , T. Kisner , A. Kremin , O. Lahav , M. Landriau , L. Le Guillou , A. Leauthaud , M. E. Levi , M. Manera , P. Martini , J. McCullough , A. Meisner , R. Miquel , J. Moustakas , A. D. Myers , J. Myles , S. Nadathur , N. Palanque-Delabrouille , W. J. Percival , F. Prada , I. Pérez-Ràfols , G. Rossi , L. Samushia , E. Sanchez , D. Schlegel , M. Schubnell , H. Seo , J. Silber , D. Sprayberry , G. Tarlé , B. A. Weaver , N. Weaverdyck , R. H. Wechsler , R. Zhou , H. Zou
We present the status of the Dark Energy Spectroscopic Instrument (DESI) and its plans and opportunities for the coming decade. DESI construction and its initial five years of operations are an approved experiment of the US Department of…
Instrumentation and Methods for Astrophysics · Physics
2019-07-26
Michael E. Levi , Lori E. Allen , Anand Raichoor , Charles Baltay , Segev BenZvi , Florian Beutler , Adam Bolton , Francisco J. Castander , Chia-Hsun Chuang , Andrew Cooper , Jean-Gabriel Cuby , Arjun Dey , Daniel Eisenstein , Xiaohui Fan , Brenna Flaugher , Carlos Frenk , Alma X. Gonzalez-Morales , Or Graur , Julien Guy , Salman Habib , Klaus Honscheid , Stephanie Juneau , Jean-Paul Kneib , Ofer Lahav , Dustin Lang , Alexie Leauthaud , Betta Lusso , Axel de la Macorra , Marc Manera , Paul Martini , Shude Mao , Jeffrey A. Newman , Nathalie Palanque-Delabrouille , Will J. Percival , Carlos Allende Prieto , Constance M. Rockosi , Vanina Ruhlmann-Kleider , David Schlegel , Hee-Jong Seo , Yong-Seon Song , Greg Tarle , Risa Wechsler , David Weinberg , Christophe Yeche , Ying Zu
Joint studies of imaging and spectroscopic samples, informed by theory and simulations, offer the potential for comprehensive tests of the cosmological model over redshifts z<1.5. Spectroscopic galaxy samples at these redshifts can be…
Cosmology and Nongalactic Astrophysics · Physics
2022-03-15
Kyle Dawson , Andrew Hearin , Katrin Heitmann , Mustapha Ishak , Johannes Ulf Lange , Martin White , Rongpu Zhou
The Dark Energy Spectroscopic Instrument (DESI) is carrying out a 5-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range of…
Cosmology and Nongalactic Astrophysics · Physics
2023-01-19
Rongpu Zhou , Biprateep Dey , Jeffrey A. Newman , Daniel J. Eisenstein , K. Dawson , S. Bailey , A. Berti , J. Guy , Ting-Wen Lan , H. Zou , J. Aguilar , S. Ahlen , Shadab Alam , D. Brooks , A. de la Macorra , A. Dey , G. Dhungana , K. Fanning , A. Font-Ribera , S. Gontcho A Gontcho , K. Honscheid , Mustapha Ishak , T. Kisner , A. Kovács , A. Kremin , M. Landriau , Michael E. Levi , C. Magneville , Marc Manera , P. Martini , Aaron M. Meisner , R. Miquel , J. Moustakas , Adam D. Myers , Jundan Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , A. Raichoor , A. J. Ross , E. Schlafly , D. Schlegel , M. Schubnell , Gregory Tarlé , B. A. Weaver , R. H. Wechsler , Christophe Yèche , Zhimin Zhou
The Dark Energy Spectroscopic Instrument (DESI) Survey has obtained a set of spectroscopic measurements of galaxies to validate the final survey design and target selections. To assist in these tasks, we visually inspect (VI) DESI spectra…
Cosmology and Nongalactic Astrophysics · Physics
2024-10-10
Ting-Wen Lan , R. Tojeiro , E. Armengaud , J. Xavier Prochaska , T. M. Davis , David M. Alexander , A. Raichoor , Rongpu Zhou , Christophe Yeche , C. Balland , S. BenZvi , A. Berti , R. Canning , A. Carr , H. Chittenden , S. Cole , M. -C. Cousinou , K. Dawson , Biprateep Dey , K. Douglass , A. Edge , S. Escoffier , A. Glanville , S. Gontcho A Gontcho , J. Guy , C. Hahn , C. Howlett , Ho Seong Hwang , L. Jiang , A. Kovacs , M. Mezcua , S. Moore , S. Nadathur , M. Oh , D. Parkinson , A. Rocher , A. J. Ross , V. Ruhlmann-Kleider , C. G. Sabiu , K. Said , C. Saulder , D. Sierra-Porta , B. Weiner , J. Yu , P. Zarrouk , Y. Zhang , H. Zou , S. Ahlen , S. Bailey , D. Brooks , A. P. Cooper , A. de la Macorra , A. Dey , G. Dhungana , P. Doel , S. Eftekharzadeh , K. Fanning , A. Font-Ribera , L. Garrison , E. Gaztanaga , R. Kehoe , T. Kisner , A. Kremin , M. Landriau , L. Le Guillou , Michael E. Levi , C. Magneville , Aaron M. Meisner , R. Miquel , J. Moustakas , Adam D. Myers , Jeffrey A. Newman , J. D. Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , M. Schubnell , Gregory Tarle , B. A. Weaver , K. Zhang , Zhimin Zhou
Collision Avoidance in Next-generation Fiber Positioner Robotic System for Large Survey Spectrograph
Some of the next generation massive spectroscopic survey projects, such as DESI and PFS, plan to use thousands of fiber positioner robots packed at a focal plane to quickly move in parallel the fiber-ends from the previous to the next…
Instrumentation and Methods for Astrophysics · Physics
2015-06-18
Laleh Makarem , Jean-Paul Kneib , Denis Gillet , Hannes Bleuler , Mohamed Bouri , Laurent Jenni , Francisco Prada , Justo Sanchez