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200 papers
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
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
Quasars can be used to measure baryon acoustic oscillations at high redshift, which are considered as direct tracers of the most distant large-scale structures in the Universe. It is fundamental to select quasars from observations before…
We report the first results of a high-redshift ($z$ >~ 5) quasar survey using the Dark Energy Spectroscopic Instrument (DESI). As a DESI secondary target program, this survey is designed to carry out a systematic search and investigation of…
Astrophysics of Galaxies · Physics
2024-02-26
Jinyi Yang , Xiaohui Fan , Ansh Gupta , Adam Myers , Nathalie Palanque-Delabrouille , Feige Wang , Christophe Yèche , Jessica Nicole Aguilar , Steven Ahlen , David Alexander , David Brooks , Kyle Dawson , Axel de la Macorra , Arjun Dey , Govinda Dhungana , Kevin Fanning , Andreu Font-Ribera , Satya Gontcho , Julien Guy , Klaus Honscheid , Stephanie Juneau , Theodore Kisner , Anthony Kremin , Laurent Le Guillou , Michael Levi , Christophe Magneville , Paul Martini , Aaron Meisner , Ramon Miquel , John Moustakas , Jundan Nie , Will Percival , Claire Poppett , Francisco Prada , Edward Schlafly , Gregory Tarlé , Mariana Vargas Magana , Benjamin Alan Weaver , Risa Wechsler , Rongpu Zhou , Zhimin Zhou , Hu Zou
As spectroscopic surveys continue to grow in size, the problem of classifying spectra targeted as quasars (QSOs) will need to move beyond its historical reliance on human experts. Instead, automatic classifiers will increasingly become the…
Cosmology and Nongalactic Astrophysics · Physics
2020-12-09
James Farr , Andreu Font-Ribera , Andrew Pontzen
Millions of quasar spectra will be collected by the Dark Energy Spectroscopic Instrument (DESI), leading to a four-fold increase in the number of known quasars. High accuracy quasar classification is essential to tighten constraints on…
Instrumentation and Methods for Astrophysics · Physics
2023-07-26
Allyson Brodzeller , Kyle Dawson , Stephen Bailey , Jiaxi Yu , A. J. Ross , A. Bault , S. Filbert , J. Aguilar , S. Ahlen , David M. Alexander , E. Armengaud , A. Berti , D. Brooks , E. Chaussidon , A. de la Macorra , P. Doel , K. Fanning , V. A. Fawcett , A. Font-Ribera , S. Gontcho A Gontcho , J. Guy , K. Honscheid , S. Juneau , R. Kehoe , T. Kisner , Anthony Kremin , Ting-Wen Lan , M. Landriau , Michael E. Levi , C. Magneville , Paul Martini , Aaron M. Meisner , R. Miquel , J. Moustakas , N. Palanque-Delabrouille , W. J. Percival , F. Prada , C. Ravoux , Graziano Rossi , C. Saulder , M. Siudek , Gregory Tarlé , B. A. Weaver , S. Youles , Zheng Zheng , Rongpu Zhou , Zhimin Zhou
The time delay between multiple images of strongly lensed quasars is a powerful tool for measuring the Hubble constant (H0). To achieve H0 measurements with higher precision and accuracy using the time delay, it is crucial to expand the…
Cosmology and Nongalactic Astrophysics · Physics
2023-12-14
C. Dawes , C. Storfer , X. Huang , G. Aldering , A. Cikota , A. Dey , D. J. Schlegel
We present a study of quasar selection using the DES supernova fields. We used a quasar catalog from an overlapping portion of the SDSS Stripe 82 region to quantify the completeness and efficiency of selection methods involving color,…
Astrophysics of Galaxies · Physics
2017-03-08
S. S. Tie , P. Martini , D. Mudd , F. Ostrovski , S. L. Reed , C. Lidman , C. Kochanek , T. M. Davis , R. Sharp , S. Uddin , A. King , W. Wester , B. E. Tucker , D. L. Tucker , E. Buckley-Geer , D. Carollo , M. Childress , K. Glazebrook , S. R. Hinton , G. Lewis , E. Macaulay , C. R. O'Neill , T. M. C. Abbott , F. B. Abdalla , J. Annis , A. Benoit-L'evy , E. Bertin , D. Brooks , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , C. E. Cunha , L. N. da Costa , D. L. DePoy , S. Desai , P. Doel , T. F. Eifler , A. E. Evrard , D. A. Finley , B. Flaugher , P. Fosalba , J. Frieman , J. Garcia-Bellido , E. Gaztanaga , D. W. Gerdes , D. A. Goldstein , D. Gruen , R. A. Gruendl , G. Gutierrez , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , M. Lima , M. A. G. Maia , J. L. Marshall , F. Menanteau , C. J. Miller , R. Miquel , R. C. Nichol , B. Nord , R. Ogando , A. A. Plazas , A. K. Romer , E. Sanchez , B. Santiago , V. Scarpine , M. Schubnell , I. Sevilla-Noarbe , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , A. R. Walker , The DES Collaboration
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
We introduce the DESI LOW-Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method. Our selection consists of a set of…
Astrophysics of Galaxies · Physics
2023-06-13
Elise Darragh-Ford , John F. Wu , Yao-Yuan Mao , Risa H. Wechsler , Marla Geha , Jaime E. Forero-Romero , ChangHoon Hahn , Nitya Kallivayalil , John Moustakas , Ethan O. Nadler , Marta Nowotka , J. E. G. Peek , Erik J. Tollerud , Benjamin Weiner , J. Aguilar , S. Ahlen , D. Brooks , A. P. Cooper , A. de la Macorra , A. Dey , K. Fanning , A. Font-Ribera , S. Gontcho A Gontcho , K. Honscheid , T. Kisner , Anthony Kremin , M. Landriau , Michael E. Levi , P. Martini , Aaron M. Meisner , R. Miquel , Adam D. Myers , Jundan Nie , N. Palanque-Delabrouille , W. J. Percival , F. Prada , D. Schlegel , M. Schubnell , Gregory Tarlé , M. Vargas-Magaña , Zhimin Zhou , H. Zou
The Dark Energy Spectroscopic Instrument (DESI) cosmology survey includes a Bright Galaxy Survey (BGS) which will yield spectra for over ten million bright galaxies (r<20.2 AB mag). The resulting sample will be valuable for both…
Astrophysics of Galaxies · Physics
2024-04-05
S. Juneau , R. Canning , D. M. Alexander , R. Pucha , V. A. Fawcett , A. D. Myers , J. Moustakas , O. Ruiz-Macias , S. Cole , Z. Pan , J. Aguilar , S. Ahlen , S. Alam , S. Bailey , D. Brooks , E. Chaussidon , C. Circosta , T. Claybaugh , K. Dawson , A. de la Macorra , Arjun Dey , P. Doel , K. Fanning , J. E. Forero-Romero , E. Gaztañaga , S. Gontcho A Gontcho , G. Gutierrez , C. Hahn , K. Honscheid , R. Kehoe , T. Kisner , A. Kremin , A. Lambert , M. Landriau , L. Le Guillou , M. Manera , P. Martini , A. Meisner , R. Miquel , A. Muñoz-Gutiérrez , J. Nie , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , C. Ravoux , M. Rezaie , G. Rossi , E. Sanchez , E. F. Schlafly , D. Schlegel , M. Schubnell , H. Seo , J. Silber , M. Siudek , D. Sprayberry , G. Tarlé , Z. Zhou , H. Zou
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…
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 algorithm for selecting quasar candidates for optical spectroscopy in the Sloan Digital Sky Survey. Quasar candidates are selected via their non-stellar colors in "ugriz" broad-band photometry, and by matching unresolved…
Astrophysics · Physics
2008-11-26
Gordon T. Richards , Xiaohui Fan , Heidi Jo Newberg , Michael A. Strauss , Daniel E. Vanden Berk , Donald P. Schneider , Brian Yanny , Adam Boucher , Scott Burles , Joshua A. Frieman , James E. Gunn , Patrick B. Hall , Zeljko Ivezic , Stephen Kent , Jon Loveday , Robert H. Lupton , Constance M. Rockosi , David J. Schlegel , Chris Stoughton , Mark SubbaRao , Donald G. York
The Dark Energy Spectroscopic Instrument (DESI) will measure millions of quasar spectra by the end of its 5 year survey. Quasar redshift errors impact the shape of the Lyman-$\alpha$ forest correlation functions, which can affect…
Cosmology and Nongalactic Astrophysics · Physics
2025-01-31
Abby Bault , David Kirkby , Julien Guy , Allyson Brodzeller , J. Aguilar , S. Ahlen , S. Bailey , D. Brooks , L. Cabayol-Garcia , J. Chaves-Montero , T. Claybaugh , A. Cuceu , K. Dawson , R. de la Cruz , A. de la Macorra , A. Dey , P. Doel , S. Filbert , A. Font-Ribera , J. E. Forero-Romero , E. Gaztañaga , S. Gontcho A Gontcho , C. Gordon , H. K. Herrera-Alcantar , K. Honscheid , V. Iršič , N. G. Karaçaylı , R. Kehoe , T. Kisner , A. Kremin , A. Lambert , M. Landriau , L. Le Guillou , M. E. Levi , M. Manera , P. Martini , A. Meisner , R. Miquel , P. Montero-Camacho , J. Moustakas , A. Muñoz-Gutiérrez , J. Nie , G. Niz , N. Palanque-Delabrouille , W. J. Percival , C. Poppett , F. Prada , I. Pérez-Ràfols , C. Ramírez-Pérez , C. Ravoux , M. Rezaie , G. Rossi , E. Sanchez , E. F. Schlafly , D. Schlegel , M. Schubnell , J. Silber , T. Tan , G. Tarlé , M. Walther , B. A. Weaver , Z. Zhou
We present a catalog of 1.4 million photometrically-selected quasar candidates in the southern hemisphere over the $\sim 5000\,{\rm deg^2}$ Dark Energy Survey (DES) wide survey area. We combine optical photometry from the DES second data…
We present findings of the detection of Magnesium II (Mg II, {\lambda} = 2796, 2803 {\AA}) absorbers from the early data release of the Dark Energy Spectroscopic Instrument (DESI). DESI is projected to obtain spectroscopy of approximately 3…
Astrophysics of Galaxies · Physics
2023-09-01
Lucas Napolitano , Agnesh Pandey , Adam D. Myers , Ting-Wen Lan , Abhijeet Anand , Jessica Aguilar , Steven Ahlen , David M. Alexander , David Brooks , Rebecca Canning , Chiara Circosta , Axel De La Macorra , Peter Doel , Sarah Eftekharzadeh , Victoria A. Fawcett , Andreu Font-Ribera , Juan Garcia-Bellido , Satya Gontcho A Gontcho , L. Le Guillou , Julien Guy , Klaus Honscheid , Stephanie Juneau , T. Kisner , Martin Landriau , Aaron M. Meisner , Ramon Miquel , J. Moustakas , Will J. Percival , J. Xavier Prochaska , Michael Schubnell , Gregory Tarle , B. A. Weaver , Benjamin Weiner , Zhimin Zhou , Hu Zou , Siwei Zou
In the near future, new surveys promise a significant increase in the number of quasars (QSO) at large redshifts. This will help to constrain the dark energy models using quasars. The Large Synoptic Survey Telescope (LSST) will cover over…
Astrophysics of Galaxies · Physics
2019-10-08
Mary Loli Martínez-Aldama , Swayamtrupta Panda , Bożena Czerny , Michal Zajaček
The Dark Energy Spectroscopic Instrument (DESI) will execute a nearly magnitude-limited survey of low redshift galaxies ($0.05 \leq z \leq 0.4$, median $z \approx 0.2$). Clustering analyses of this Bright Galaxy Survey (BGS) will yield the…
Astrophysics of Galaxies · Physics
2020-10-23
Omar Ruiz-Macias , Pauline Zarrouk , Shaun Cole , Peder Norberg , Carlton Baugh , David Brooks , Arjun Dey , Yutong Duan , Sarah Eftekharzadeh , Daniel J. Eisenstein , Jaime E. Forero-Romero , Enrique Gaztañaga , ChangHoon Hahn , Robert Kehoe , Martin Landriau , Dustin Lang , Michael E. Levi , John Lucey , Aaron M. Meisner , John Moustakas , Adam D. Myers , Nathalie Palanque-Delabrouille , Claire Poppett , Francisco Prada , Anand Raichoor , David J. Schlegel , Michael Schubnell , Gregory Tarlé , David H. Weinberg , M. J. Wilson , Christophe Yèche
Lensed quasars are powerful probes of cosmology, the co-evolution of supermassive black holes and their host galaxies, and the distribution of dark matter. We cross-match 1,724 previously identified candidates from KiDS, HSC, and the DESI…
Astrophysics of Galaxies · Physics
2026-03-05
Zizhao He , Qihang Chen , Xiaosheng Huang , Christopher J. Storfer , Shen Li , Nan Li