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In preparation for the Dark Energy Spectroscopic Instrument (DESI), a new top end was installed on the Mayall 4-meter telescope at Kitt Peak National Observatory. The refurbished telescope and the DESI instrument were successfully…
Instrumentation and Methods for Astrophysics · Physics
2021-01-25
Aaron M. Meisner , Behzad Abareshi , Arjun Dey , Connie Rockosi , Richard Joyce , David Sprayberry , Robert Besuner , Klaus Honscheid , David Kirkby , Hui Kong , Martin Landriau , Michael Levi , Ting Li , Bob Marshall , Paul Martini , Ashley Ross , David Brooks , Peter Doel , Yutong Duan , Enrique Gaztanaga , Christophe Magneville , Francisco Prada , Michael Schubnell , Gregory Tarle
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
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, 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
Highly multiplexed, fiber-fed spectroscopy is enabling surveys of millions of stars and galaxies. The performance of these surveys depends on accurately positioning fibers in the focal plane to capture target light. We describe a technique…
Instrumentation and Methods for Astrophysics · Physics
2024-03-12
E. F. Schlafly , D. Schlegel , S. BenZvi , A. Raichoor , J. E. Forero-Romero , J. Aguilar , S. Ahlen , S. Bailey , A. Bault , D. Brooks , T. Claybaugh , K. Dawson , A. de la Macorra , Arjun Dey , P. Doel , E. Gaztañaga , S. Gontcho A Gontcho , J. Guy , C. Hahn , K. Honscheid , J. Jimenez , S. Kent , D. Kirkby , T. Kisner , A. Kremin , A. Lambert , M. Landriau , M. E. Levi , M. Manera , P. Martini , A. Meisner , R. Miquel , J. Moustakas , A. D. Myers , J. Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , D. Rabinowitz , M. Rezaie , G. Rossi , E. Sanchez , M. Schubnell , R. Sharples , J. Silber , G. Tarlé , B. A. Weaver , Z. Zhou , H. Zou
The Dark Energy Spectroscopic Instrument (DESI) is an ongoing spectroscopic survey to measure the dark energy equation of state to unprecedented precision. We describe the DESI Sky Continuum Monitor System, which tracks the night sky…
Instrumentation and Methods for Astrophysics · Physics
2021-01-29
Suk Sien Tie , David Kirkby , Paul Martini , Claire Poppett , Daniel Pappalardo , David Schlegel , Jonathan Shover , Julien Guy , Kevin Fanning , Klaus Honscheid , Michael Lampton , Patrick Jelinsky , Robert Besuner , Kai Zhang , David Brooks , Peter Doel , Yutong Duan , Enrique Gastanaga , Robert Kehoe , Martin Landriau , Michael Levi , Francisco Prada , Gregory Tarle
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
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
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 observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ~ 10, improving the sample statistics to study the early chemical evolution of…
Solar and Stellar Astrophysics · Physics
2023-10-30
Carlos Allende Prieto , David S. Aguado , Jonay I. González Hernández , Rafael Rebolo , Joan Najita , Christopher J. Manser , Constance Rockosi , Zachary Slepian , Mar Mezcua , Monica Valluri , Rana Ezzeddine , Sergey E. Koposov , Andrew P. Cooper , Arjun Dey , Boris T. Gänsicke , Ting S. Li , Katia Cunha , Siwei Zou , Jessica Nicole Aguilar , Steven Ahlen , David Brooks , Todd Claybaugh , Shaun Cole , Sarah Eftekharzadeh , Kevin Fanning , Jaime Forero-Romero , Satya Gontcho A Gontcho , Klaus Honscheid , Pascale Jablonka , Robert Kehoe , Theodore Kisner , Martin Landriau , Axel de la Macorra , Aaron Meisner , Ramón Miquel , John Moustakas , Jundan Nie , Claire Poppett , Francisco Prada , Mehdi Rezaie , Graziano Rossi , Eusebio Sánchez , Michael Schubnell , Ray Sharples , Malgorzata Siudek , Verne V. Smith , Gregory Tarlé , Fiorenzo Vincenzo , Benjamin Alan Weaver , Zhimin Zhou , Hu Zou
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4m telescope at the Kitt Peak National Observatory. Over the next 5 yr DESI MWS will observe approximately…
Astrophysics of Galaxies · Physics
2023-04-26
Andrew P. Cooper , Sergey E. Koposov , Carlos Allende Prieto , Christopher J. Manser , Namitha Kizhuprakkat , Adam D. Myers , Arjun Dey , Boris T. Gaensicke , Ting S. Li , Constance Rockosi , Monica Valluri , Joan Najita , Alis Deason , Anand Raichoor , Mei-Yu Wang , Yuan-Sen Ting , Bokyoung Kim , Andreia Carrillo , Wenting Wang , Leandro Beraldo e Silva , Jiwon Jesse Han , Jiani Ding , Miguel Sanchez-Conde , Jessica N. Aguilar , Steven Ahlen , Stephen Bailey , Vasily Belokurov , David Brooks , Katia Cunha , Kyle Dawson , Axel de la Macorra , Peter Doel , Daniel J. Eisenstein , Parker Fagrelius , Kevin Fanning , Andreu Font-Ribera , Jaime E. Forero-Romero , Enrique Gaztanaga , Satya Gontcho A Gontcho , Julien Guy , Klaus Honscheid , Robert Kehoe , Theodore Kisner , Anthony Kremin , Martin Landriau , Michael E. Levi , Paul Martini , Aaron M. Meisner , Ramon Miquel , John Moustakas , Jundan Nie , Nathalie Palanque-Delabrouille , Will J. Percival , Claire Poppett , Francisco Prada , Nabeel Rehemtulla , Edward Schlafly , David Schlegel , Michael Schubnell , Ray M. Sharples , Gregory Tarle , Risa H. Wechsler , David H. Weinberg , 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
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
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) survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range 0.9<z<2.1 and using Ly-alpha forests in quasar spectra at z>2.1. We present…
Cosmology and Nongalactic Astrophysics · Physics
2023-03-08
Edmond Chaussidon , Christophe Yèche , Nathalie Palanque-Delabrouille , David M. Alexander , Jinyi Yang , Steven Ahlen , Stephen. Bailey , David Brooks , Zheng Cai , Solène Chabanier , Tamara M. Davis , Kyle Dawson , Axel de la Macorra , Arjun Dey , Biprateep Dey , Sarah Eftekharzadeh , Daniel J. Eisenstein , Kevin Fanning , Andreu Font-Ribera , Enrique Gaztañaga , Satya Gontcho A Gontcho , Alma X. Gonzalez-Morales , Julien Guy , Hiram K. Herrera-Alcantar , Klaus Honscheid , Mustapha Ishak , Linhua Jiang , Stephanie Juneau , Robert Kehoe , Theodore Kisner , Andras Kovács , Anthony Kremin , Ting-Wen Lan , Martin Landriau , Laurent Le Guillou , Michael E. Levi , Christophe Magneville , Paul Martini , Aaron M. Meisner , John Moustakas , Andrea Muñoz-Gutiérrez , Adam D. Myers , Jeffrey A. Newman , Jundan Nie , Will J. Percival , Claire Poppett , Francisco Prada , Anand Raichoor , Corentin Ravoux , Ashley J. Ross , Edward Schlafly , David Schlegel , Ting Tan , Gregory Tarlé , Rongpu Zhou , Zhimin Zhou , Hu Zou
Over the next five years, the Dark Energy Spectroscopic Instrument (DESI) will use 10 spectrographs with 5000 fibers on the 4m Mayall Telescope at Kitt Peak National Observatory to conduct the first Stage-IV dark energy galaxy survey. At $z…
Cosmology and Nongalactic Astrophysics · Physics
2023-06-07
ChangHoon Hahn , Michael J. Wilson , Omar Ruiz-Macias , Shaun Cole , David H. Weinberg , John Moustakas , Anthony Kremin , Jeremy L. Tinker , Alex Smith , Risa H. Wechsler , Steven Ahlen , Shadab Alam , Stephen Bailey , David Brooks , Andrew P. Cooper , Tamara M. Davis , Kyle Dawson , Arjun Dey , Biprateep Dey , Sarah Eftekharzadeh , Daniel J. Eisenstein , Kevin Fanning , Jaime E. Forero-Romero , Carlos S. Frenk , Enrique Gaztañaga , Satya Gontcho A Gontcho , Julien Guy , Klaus Honscheid , Mustapha Ishak , Stéphanie Juneau , Robert Kehoe , Theodore Kisner , Ting-Wen Lan , Martin Landriau , Laurent Le Guillou , Michael E. Levi , Christophe Magneville , Paul Martini , Aaron Meisner , Adam D. Myers , Jundan Nie , Peder Norberg , Nathalie Palanque-Delabrouille , Will J. Percival , Claire Poppett , Francisco Prada , Anand Raichoor , Ashley J. Ross , Sasha Safonova , Christoph Saulder , Eddie Schlafly , David Schlegel , David Sierra-Porta , Gregory Tarle , Benjamin A. Weaver , Christophe Yèche , Pauline Zarrouk , Rongpu Zhou , Zhimin Zhou , Hu Zou
The current generation of large galaxy surveys will test the cosmological model by combining multiple types of observational probes. Realising the statistical promise of these new datasets requires rigorous attention to all aspects of…
Cosmology and Nongalactic Astrophysics · Physics
2025-03-11
C. Blake , C. Garcia-Quintero , S. Ahlen , D. Bianchi , D. Brooks , T. Claybaugh , A. de la Macorra , J. DeRose , A. Dey , P. Doel , N. Emas , S. Ferraro , J. E. Forero-Romero , G. Gutierrez , S. Heydenreich , K. Honscheid , C. Howlett , M. Ishak , S. Joudaki , E. Jullo , R. Kehoe , D. Kirkby , A. Kremin , A. Krolewski , M. Landriau , J. U. Lange , A. Leauthaud , M. E. Levi , M. Manera , R. Miquel , J. Moustakas , G. Niz , W. J. Percival , I. Pérez-Ràfols , A. Porredon , G. Rossi , R. Ruggeri , E. Sanchez , C. Saulder , D. Schlegel , D. Sprayberry , Z. Sun , G. Tarlé , B. A. Weaver
The Dark Energy Survey (DES) is a 5000 deg2 grizY survey reaching characteristic photometric depths of 24th magnitude (10 sigma) and enabling accurate photometry and morphology of objects ten times fainter than in SDSS. Preparations for DES…
Instrumentation and Methods for Astrophysics · Physics
2015-06-05
Joseph J. Mohr , Robert Armstrong , Emmanuel Bertin , Gregory E. Daues , Shantanu Desai , Michelle Gower , Robert Gruendl , William Hanlon , Nikolay Kuropatkin , Huan Lin , John Marriner , Don Petravick , Ignacio Sevilla , Molly Swanson , Todd Tomashek , Douglas Tucker , Brian Yanny , the Dark Energy Survey Collaboration
The Dark Energy Survey (DES) is a next generation optical survey aimed at measuring the expansion history of the universe using four probes: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia…
Instrumentation and Methods for Astrophysics · Physics
2019-08-13
M. Soares-Santos , J. Annis , M. Bonati , E. Buckley-Geer , H. Cease , D. DePoy , G. Derylo , H. T. Diehl , A. Elliott , J. Estrada , D. Finley , B. Flaugher , J. Frieman , J. Hao , K. Honscheid , I. Karliner , K. Krempetz , K. Kuehn , S. Kuhlmann , K. Kuk , H. Lin , W. Merrit , E. Neilsen , L. Scott , S. Serrano , T. Shaw , K. Schultz , W. Stuermer , A. Sypniewski , J. Thaler , A. Walker , J. Walton , W. Wester , B. Yanny
We present the design, fabrication, and testing of R-FLEX, a novel flexure mechanism for next-generation fiber-fed astronomical instruments. As the current Dark Energy Spectroscopic Instrument (DESI) revolutionizes cosmology with over 56…
Instrumentation and Methods for Astrophysics · Physics
2025-08-06
Nicholas R. Wenner , Joseph H. Silber , David J. Schlegel