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Large sets of objects with spectroscopic redshift measurements will be needed for imaging dark energy experiments to achieve their full potential, serving two goals:_training_, i.e., the use of objects with known redshift to develop and…
Cosmology and Nongalactic Astrophysics · Physics
2016-05-25
J. Newman , A. Abate , F. Abdalla , S. Allam , S. Allen , R. Ansari , S. Bailey , W. Barkhouse , T. Beers , M. Blanton , M. Brodwin , J. Brownstein , R. Brunner , M. Carrasco-Kind , J. Cervantes-Cota , E. Chisari , M. Colless , J. Comparat , J. Coupon , E. Cheu , C. Cunha , A. de la Macorra , I. Dell'Antonio , B. Frye , E. Gawiser , N. Gehrels , K. Grady , A. Hagen , P. Hall , A. Hearin , H. Hildebrandt , C. Hirata , S. Ho , K. Honscheid , D. Huterer , Z. Ivezic , J. -P. Kneib , J. Kruk , O. Lahav , R. Mandelbaum , J. Marshall , D. Matthews , B. Ménard , R. Miquel , M. Moniez , W. Moos , J. Moustakas , C. Papovich , J. Peacock , C. Park , J. Rhodes , J-S. Ricol , I. Sadeh , A. Slozar , S. Schmidt , D. Stern , T. Tyson , A. von der Linden , R. Wechsler , W. Wood-Vasey , A. Zentner
Accurate redshift estimates are a critical requirement for weak lensing surveys and one of the main uncertainties in constraints on dark energy and large-scale cosmic structure. In this paper, we study the potential to calibrate photometric…
Cosmology and Nongalactic Astrophysics · Physics
2025-12-23
Diana Blanco , Alexie Leauthaud , Johannes Ulf Lange , Angus H. Wright , Hendrik Hildebrandt , Sven Heydenreich , Darshika Ravulapalli , Joshua Ratajczak , Kyle S. Dawson , Jamie McCullough , Biprateep Dey , Jessica N. Aguilar , Steven Ahlen , Abhijeet Anand , Davide Bianchi , Chris Blake , David Brooks , Francisco J. Castander , Todd Claybaugh , Andrei Cuceu , Axel de la Macorra , John Della Costa , Arjun Dey , Ann Elliott , Ni Putu Audita Placida Emas , Simone Ferraro , Andreu Font-Ribera , Jaime E. Forero-Romero , Cristhian Garcia-Quintero , Enrique Gaztañaga , Satya Gontcho A Gontcho , Gaston Gutierrez , Dragan Huterer , Mustapha Ishak , Jorge Jimenez , Shahab Joudaki , Dick Joyce , Stephanie Juneau , David Kirkby , Anthony Kremin , Alex Krolewski , Claire Lamman , Martin Landriau , Laurent Le Guillou , Marc Manera , Aaron Meisner , Ramon Miquel , John Moustakas , Seshadri Nadathur , Jeffrey A. Newman , Will Percival , Anna Porredon , Francisco Prada , Ignasi Pérez-Ràfols , Amy Robertson , Graziano Rossi , Eusebio Sanchez , Christoph Saulder , Agne Semenaite , David Schlegel , Hee-Jong Seo , Joseph H. Silber , David Sprayberry , Gregory Tarlé , Benjamin A. Weaver , Rongpu Zhou , Hu Zou
The Dark Energy Spectroscopic Instrument (DESI) is a massively multiplexed fiber-fed spectrograph that will make the next major advance in dark energy in the timeframe 2018-2022. On the Mayall telescope, DESI will obtain spectra and…
Cosmology and Nongalactic Astrophysics · Physics
2013-08-06
Michael Levi , Chris Bebek , Timothy Beers , Robert Blum , Robert Cahn , Daniel Eisenstein , Brenna Flaugher , Klaus Honscheid , Richard Kron , Ofer Lahav , Patrick McDonald , Natalie Roe , David Schlegel , representing the DESI collaboration
In this paper we present photometric redshift (photo-$z$) estimates for the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys, currently the most sensitive optical survey covering the majority of the extra-galactic sky. Our…
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
This white paper summarizes the conclusions of the Snowmass White Paper "Spectroscopic Needs for Imaging Dark Energy Experiments" (arXiv:1309.5384) which are relevant to the calibration of LSST photometric redshifts; i.e., the accurate…
Instrumentation and Methods for Astrophysics · Physics
2014-10-17
Samuel J. Schmidt , Jeffrey A. Newman , Alexandra Abate , the Spectroscopic Needs White Paper Team
We present results from a study of the photometric redshift performance of the Dark Energy Survey (DES), using the early data from a Science Verification (SV) period of observations in late 2012 and early 2013 that provided science-quality…
Instrumentation and Methods for Astrophysics · Physics
2014-10-15
C. Sánchez , M. Carrasco Kind , H. Lin , R. Miquel , F. B. Abdalla , A. Amara , M. Banerji , C. Bonnett , R. Brunner , D. Capozzi , A. Carnero , F. J. Castander , L. A. N. da Costa , C. Cunha , A. Fausti , D. Gerdes , N. Greisel , J. Gschwend , W. Hartley , S. Jouvel , O. Lahav , M. Lima , M. A. G. Maia , P. Martí , R. L. C. Ogando , F. Ostrovski , P. Pellegrini , M. M. Rau , I. Sadeh , S. Seitz , I. Sevilla-Noarbe , A. Sypniewski , J. de Vicente , T. Abbot , S. S. Allam , D. Atlee , G. Bernstein , J. P. Bernstein , E. Buckley-Geer , D. Burke , M. J. Childress , T. Davis , D. L. DePoy , A. Dey , S. Desai , H. T. Diehl , P. Doel , J. Estrada , A. Evrard , E. Fernández , D. Finley , B. Flaugher , E. Gaztanaga , K. Glazebrook , K. Honscheid , A. Kim , K. Kuehn , N. Kuropatkin , C. Lidman , M. Makler , J. L. Marshall , R. C. Nichol , A. Roodman , E. Sánchez , B. X. Santiago , M. Sako , R. Scalzo , R. C. Smith , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , S. A. Uddin , F. Valdés , A. Walker , F. Yuan , J. Zuntz
The effective redshift distribution $n(z)$ of galaxies is a critical component in the study of weak gravitational lensing. Here, we introduce a new method for determining $n(z)$ for weak lensing surveys based on high-quality redshifts and…
Cosmology and Nongalactic Astrophysics · Physics
2025-12-30
Johannes U. Lange , Diana Blanco , Alexie Leauthaud , Angus Wright , Abigail Fisher , Joshua Ratajczak , Jessica Nicole Aguilar , Steven Ahlen , Stephen Bailey , Davide Bianchi , Chris Blake , David Brooks , Todd Claybaugh , Andrei Cuceu , Kyle Dawson , Axel de la Macorra , Joseph DeRose , Arjun Dey , Peter Doel , Ni Putu Audita Placida Emas , Simone Ferraro , Andreu Font-Ribera , Jaime E. Forero-Romero , Cristhian Garcia-Quintero , Enrique Gaztañaga , Satya Gontcho A Gontcho , Gaston Gutierrez , Sven Heydenreich , Hendrik Hildebrandt , Mustapha Ishak , Jorge Jimenez , Shahab Joudaki , Robert Kehoe , David Kirkby , Theodore Kisner , Anthony Kremin , Ofer Lahav , Claire Lamman , Martin Landriau , Laurent Le Guillou , Michael Levi , Leonel Medina Varela , Aaron Meisner , Ramon Miquel , John Moustakas , Seshadri Nadathur , Jeffrey A. Newman , Nathalie Palanque-Delabrouille , Anna Porredon , Francisco Prada , Ignasi Pérez-Ràfols , Graziano Rossi , Rossana Ruggeri , Eusebio Sanchez , Christoph Saulder , David Schlegel , Michael Schubnell , David Sprayberry , Zechang Sun , Gregory Tarlé , Benjamin Alan Weaver , Sihan Yuan , Pauline Zarrouk , Hu Zou
The Dark Energy Spectroscopic Instrument (DESI) has embarked on an ambitious five-year survey to explore the nature of dark energy with spectroscopy of 40 million galaxies and quasars. DESI will determine precise redshifts and employ the…
Instrumentation and Methods for Astrophysics · Physics
2023-03-15
B. Abareshi , J. Aguilar , S. Ahlen , Shadab Alam , David M. Alexander , R. Alfarsy , L. Allen , C. Allende Prieto , O. Alves , J. Ameel , E. Armengaud , J. Asorey , Alejandro Aviles , S. Bailey , A. Balaguera-Antolínez , O. Ballester , C. Baltay , A. Bault , S. F. Beltran , B. Benavides , S. BenZvi , A. Berti , R. Besuner , Florian Beutler , D. Bianchi , C. Blake , P. Blanc , R. Blum , A. Bolton , S. Bose , D. Bramall , S. Brieden , A. Brodzeller , D. Brooks , C. Brownewell , E. Buckley-Geer , R. N. Cahn , Z. Cai , R. Canning , A. Carnero Rosell , P. Carton , R. Casas , F. J. Castander , J. L. Cervantes-Cota , S. Chabanier , E. Chaussidon , C. Chuang , C. Circosta , S. Cole , A. P. Cooper , L. da Costa , M. -C. Cousinou , A. Cuceu , T. M. Davis , K. Dawson , R. de la Cruz-Noriega , A. de la Macorra , A. de Mattia , J. Della Costa , P. Demmer , M. Derwent , A. Dey , B. Dey , G. Dhungana , Z. Ding , C. Dobson , P. Doel , J. Donald-McCann , J. Donaldson , K. Douglass , Y. Duan , P. Dunlop , J. Edelstein , S. Eftekharzadeh , D. J. Eisenstein , M. Enriquez-Vargas , S. Escoffier , M. Evatt , P. Fagrelius , X. Fan , K. Fanning , V. A. Fawcett , S. Ferraro , J. Ereza , B. Flaugher , A. Font-Ribera , J. E. Forero-Romero , C. S. Frenk , S. Fromenteau , B. T. Gänsicke , C. Garcia-Quintero , L. Garrison , E. Gaztañaga , F. Gerardi , H. Gil-Marín , S. Gontcho A Gontcho , Alma X. Gonzalez-Morales , G. Gonzalez-de-Rivera , V. Gonzalez-Perez , C. Gordon , O. Graur , D. Green , C. Grove , D. Gruen , G. Gutierrez , J. Guy , C. Hahn , S. Harris , D. Herrera , Hiram K. Herrera-Alcantar , K. Honscheid , C. Howlett , D. Huterer , V. Iršič , M. Ishak , P. Jelinsky , L. Jiang , J. Jimenez , Y. P. Jing , R. Joyce , E. Jullo , S. Juneau , N. G. Karaçaylı , M. Karamanis , A. Karcher , T. Karim , R. Kehoe , S. Kent , D. Kirkby , T. Kisner , F. Kitaura , S. E. Koposov , A. Kovács , A. Kremin , Alex Krolewski , B. L'Huillier , O. Lahav , A. Lambert , C. Lamman , Ting-Wen Lan , M. Landriau , S. Lane , D. Lang , J. U. Lange , J. Lasker , L. Le Guillou , A. Leauthaud , A. Le Van Suu , Michael E. Levi , T. S. Li , C. Magneville , M. Manera , Christopher J. Manser , B. Marshall , W. McCollam , P. McDonald , Aaron M. Meisner , J. Mena-Fernández M. Mezcua , T. Miller , R. Miquel , P. Montero-Camacho , J. Moon , J. Paul Martini , J. Meneses-Rizo , J. Moustakas , E. Mueller , Andrea Muñoz-Gutiérrez , Adam D. Myers , S. Nadathur , J. Najita , L. Napolitano , E. Neilsen , Jeffrey A. Newman , J. D. Nie , Y. Ning , G. Niz , P. Norberg , Hernán E. Noriega , T. O'Brien , A. Obuljen , N. Palanque-Delabrouille , A. Palmese , P. Zhiwei , D. Pappalardo , X. Peng , W. J. Percival , S. Perruchot , R. Pogge , C. Poppett , A. Porredon , F. Prada , J. Prochaska , R. Pucha , A. Pérez-Fernández , I. Pérez-Ráfols , D. Rabinowitz , A. Raichoor , S. Ramirez-Solano , César Ramírez-Pérez , C. Ravoux , K. Reil , M. Rezaie , A. Rocher , C. Rockosi , N. A. Roe , A. Roodman , A. J. Ross , G. Rossi , R. Ruggeri , V. Ruhlmann-Kleider , C. G. Sabiu , S. Safonova , K. Said , A. Saintonge , Javier Salas Catonga , L. Samushia , E. Sanchez , C. Saulder , E. Schaan , E. Schlafly , D. Schlegel , J. Schmoll , D. Scholte , M. Schubnell , A. Secroun , H. Seo , S. Serrano , Ray M. Sharples , Michael J. Sholl , Joseph Harry Silber , D. R. Silva , M. Sirk , M. Siudek , A. Smith , D. Sprayberry , R. Staten , B. Stupak , T. Tan , Gregory Tarlé , Suk Sien Tie , R. Tojeiro , L. A. Ureña-López , F. Valdes , O. Valenzuela , M. Valluri , M. Vargas-Magaña , L. Verde , M. Walther , B. Wang , M. S. Wang , B. A. Weaver , C. Weaverdyck , R. Wechsler , Michael J. Wilson , J. Yang , Y. Yu , S. Yuan , Christophe Yèche , H. Zhang , K. Zhang , Cheng Zhao , Rongpu Zhou , Zhimin Zhou , H. Zou , J. Zou , S. Zou , Y. Zu
DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar…
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
We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and quasars using a purpose-built instrument on the 4-m Mayall…
Instrumentation and Methods for Astrophysics · Physics
2023-03-15
J. Guy , S. Bailey , A. Kremin , Shadab Alam , D. M. Alexander , C. Allende Prieto , S. BenZvi , A. S. Bolton , D. Brooks , E. Chaussidon , A. P. Cooper , K. Dawson , A. de la Macorra , A. Dey , Biprateep Dey , G. Dhungana , D. J. Eisenstein , A. Font-Ribera , J. E. Forero-Romero , E. Gaztañaga , S. Gontcho A Gontcho , D. Green , K. Honscheid , M. Ishak , R. Kehoe , D. Kirkby , T. Kisner , Sergey E. Koposov , Ting-Wen Lan , M. Landriau , L. Le Guillou , Michael E. Levi , C. Magneville , Christopher J. Manser , P. Martini , Aaron M. Meisner , R. Miquel , J. Moustakas , Adam D. Myers , Jeffrey A. Newman , Jundan Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , A. Raichoor , C. Ravoux , A. J. Ross , E. F. Schlafly , D. Schlegel , M. Schubnell , Ray M. Sharples , Gregory Tarlé , B. A. Weaver , Christophe Yèche , Rongpu Zhou , Zhimin Zhou , H. Zou
LSST will open new vistas for cosmology in the next decade, but it cannot reach its full potential without data from other telescopes. Cosmological constraints can be greatly enhanced using wide-field ($>20$ deg$^2$ total survey area),…
Cosmology and Nongalactic Astrophysics · Physics
2019-03-25
Rachel Mandelbaum , Jonathan Blazek , Nora Elisa Chisari , Thomas Collett , Lluís Galbany , Eric Gawiser , Renée A. Hložek , Alex G. Kim , C. Danielle Leonard , Michelle Lochner , Jeffrey A. Newman , Daniel J. Perrefort , Samuel J. Schmidt , Sukhdeep Singh , Mark Sullivan
Accurate redshift measurements are essential for studying the evolution of quasi-stellar objects (QSOs) and their role in cosmic structure formation. While spectroscopic redshifts provide high precision, they are impractical for the vast…
Astrophysics of Galaxies · Physics
2025-07-08
Jeremy P. Moss , Stephen J. Curran , Yvette C. Perrott
Community access to deep (i ~ 25), highly-multiplexed optical and near-infrared multi-object spectroscopy (MOS) on 8-40m telescopes would greatly improve measurements of cosmological parameters from LSST. The largest gain would come from…
Cosmology and Nongalactic Astrophysics · Physics
2019-03-25
Jeffrey A. Newman , Jonathan Blazek , Nora Elisa Chisari , Douglas Clowe , Ian Dell'Antonio , Eric Gawiser , Renée A. Hložek , Alex G. Kim , Anja von der Linden , Michelle Lochner , Rachel Mandelbaum , Elinor Medezinski , Peter Melchior , F. Javier Sánchez , Samuel J. Schmidt , Sukhdeep Singh , Rongpu Zhou
We conduct a detailed analysis of the photometric redshift requirements for the proposed Dark Energy Survey (DES) using two sets of mock galaxy simulations and an artificial neural network code - ANNz. In particular, we examine how optical…
The Dark Energy Spectroscopic Instrument (DESI) will precisely constrain cosmic expansion and the growth of structure by collecting $\sim$40 million extra-galactic redshifts across $\sim$80\% of cosmic history and one third of the sky. The…
Cosmology and Nongalactic Astrophysics · Physics
2023-03-01
A. Raichoor , J. Moustakas , Jeffrey A. Newman , T. Karim , S. Ahlen , Shadab Alam , S. Bailey , D. Brooks , K. Dawson , A. de la Macorra , A. de Mattia , A. Dey , Biprateep Dey , G. Dhungana , S. Eftekharzadeh , D. J. Eisenstein , K. Fanning , A. Font-Ribera , J. Garcia-Bellido , E. Gaztanaga , S. Gontcho A Gontcho , J. Guy , K. Honscheid , M. Ishak , R. Kehoe , T. Kisner , A. Kremin , Ting-Wen Lan , M. Landriau , L. Le Guillou , Michael E. Levi , C. Magneville , P. Martini , Aaron M. Meisner , Adam D. Myers , Jundan Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , A. J. Ross , V. Ruhlmann-Kleider , C. G. Sabiu , E. F. Schlafly , D. Schlegel , Gregory Tarle , B. A. Weaver , Christophe Yeche , Rongpu Zhou , Zhimin Zhou , H. Zou
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
The China Space Station Telescope (CSST) photometric survey aims to perform a high spatial resolution (~0.15'') photometric imaging for the targets that cover a large sky area (~17,500 deg^2) and wide wavelength range (from NUV to NIR). It…
Cosmology and Nongalactic Astrophysics · Physics
2022-02-11
Ye Cao , Yan Gong , Zhen-Ya Zheng , Chun Xu
Combining different observational probes, such as galaxy clustering and weak lensing, is a promising technique for unveiling the physics of the Universe with upcoming dark energy experiments. The galaxy redshift sample from the Dark Energy…
Cosmology and Nongalactic Astrophysics · Physics
2023-06-14
Rossana Ruggeri , Chris Blake , Joseph DeRose , C. Garcia-Quintero , B. Hadzhiyska , M. Ishak , N. Jeffrey , S. Joudaki , Alex Krolewski , J. U. Lange , A. Leauthaud , A. Porredon , G. Rossi , C. Saulder , E. Xhakaj , 1 D. Brooks , G. Dhungana , A. de la Macorra , P. Doel , S. Gontcho A Gontcho , A. Kremin , M. Landriau , R. Miquel , 0 C. Poppett , F. Prada , Gregory Tarlé
Over several dedicated programs that include targets beyond the main cosmological samples, the Dark Energy Spectroscopic Instrument (DESI) collected spectra for 304,970 unique objects in two fields centered on the COSMOS and XMM-LSS fields.…
Cosmology and Nongalactic Astrophysics · Physics
2026-01-21
J. Ratajczak , K. S. Dawson , N. Weaverdyck , J. Aguilar , S. Ahlen , E. Armengaud , S. Bailey , D. Bianchi , D. Blanco , A. Brodzeller , D. Brooks , F. J. Castander , T. Claybaugh , A. Cuceu , A. de la Macorra , Arjun Dey , Biprateep Dey , P. Doel , A. Font-Ribera , J. E. Forero-Romero , E. Gaztañaga , S. Gontcho A Gontcho , G. Gutierrez , J. Guy , T. Hagen , H. K. Herrera-Alcantar , K. Honscheid , D. Huterer , M. Ishak , J. Jimenez , R. Joyce , S. Juneau , R. Kehoe , D. Kirkby , T. Kisner , S. E. Koposov , A. Kremin , O. Lahav , A. Lambert , C. Lamman , M. Landriau , L. Le Guillou , A. Leauthaud , J. Lee , M. E. Levi , Q. Li , I. Longhurst , Y. Luo , M. Manera , P. Martini , J. McCullough , A. Meisner , R. Miquel , J. Moustakas , S. Nadathur , J. A. Newman , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , I. Pérez-Ràfols , A. Raichoor , C. Ravoux , G. Rossi , Y. Salcedo Hernandez , E. Sanchez , C. Saulder , D. Schlegel , M. Schubnell , H. Seo , D. Sprayberry , G. Tarlé , B. A. Weaver , R. H. Wechsler , M. White , R. Zhou , H. Zou