The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies

Ting-Wen Lan; R. Tojeiro; E. Armengaud; J. Xavier Prochaska; T.M. Davis; David M. Alexander; A. Raichoor; Rongpu Zhou; Christophe Yèche; 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. Kovács; 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. Gaztañaga; 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 Tarlé; B.A. Weaver; K. Zhang; Zhimin Zhou

doi:10.3847/1538-4357/aca5fa

The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies

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The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies

Ting-Wen Lan, R. Tojeiro, E. Armengaud, J. Xavier Prochaska, T.M. Davis, David M. Alexander, A. Raichoor, Rongpu Zhou, Christophe Yèche, C. Balland, …

Astrophysical Journal, 卷.943(1), 68

01/2023

DOI: https://doi.org/10.3847/1538-4357/aca5fa

摘要

Astronomy and Astrophysics

Space and Planetary Science

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 DESI spectra of approximately 2500 bright galaxies, 3500 luminous red galaxies (LRGs), and 10,000 emission-line galaxies (ELGs) to obtain robust redshift identifications. We then utilize the visually inspected redshift information to characterize the performance of the DESI operation. Based on the visual inspection (VI) catalogs, our results show that the final survey design yields samples of bright galaxies, LRGs, and ELGs with purity greater than 99%. Moreover, we demonstrate that the precision of the redshift measurements is approximately 10 km s ⁻¹ for bright galaxies and ELGs and approximately 40 km s ⁻¹ for LRGs. The average redshift accuracy is within 10 km s ⁻¹ for the three types of galaxies. The VI process also helps improve the quality of the DESI data by identifying spurious spectral features introduced by the pipeline. Finally, we show examples of unexpected real astronomical objects, such as Lyα emitters and strong lensing candidates, identified by VI. These results demonstrate the importance and utility of visually inspecting data from incoming and upcoming surveys, especially during their early operation phases.

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題名: The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies
翻譯題名: The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies
創作者：: Ting-Wen Lan (作者) - National Taiwan University
R. Tojeiro (作者) - University of St Andrews
E. Armengaud (作者) - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
J. Xavier Prochaska (作者) - Kavli Institute for the Physics and Mathematics of the Universe
T.M. Davis (作者) - The University of Queensland
David M. Alexander (作者) - Durham University
A. Raichoor (作者) - Lawrence Berkeley National Laboratory
Rongpu Zhou (作者) - Lawrence Berkeley National Laboratory
Christophe Yèche (作者) - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
C. Balland (作者) - Centre National de la Recherche Scientifique
S. BenZvi (作者) - University of Rochester
A. Berti (作者) - University of Utah
R. Canning (作者) - University of Portsmouth
A. Carr (作者) - The University of Queensland
H. Chittenden (作者) - University of St Andrews
S. Cole (作者) - Durham University
M.-C. Cousinou (作者) - Centre National de la Recherche Scientifique
K. Dawson (作者) - University of Utah
Biprateep Dey (作者) - University of Pittsburgh
K. Douglass (作者) - University of Rochester
A. Edge (作者) - Durham University
S. Escoffier (作者) - Centre National de la Recherche Scientifique
A. Glanville (作者) - The University of Queensland
S. Gontcho A Gontcho (作者) - Lawrence Berkeley National Laboratory
J. Guy (作者) - Lawrence Berkeley National Laboratory
C. Hahn (作者) - Lawrence Berkeley National Laboratory
C. Howlett (作者) - The University of Queensland
Ho Seong Hwang (作者) - Seoul National University
L. Jiang (作者) - Peking University
A. Kovács (作者) - Universidad de La Laguna
M. Mezcua (作者) - Institute of Space Sciences
S. Moore (作者) - Durham University
S. Nadathur (作者) - University College London
M. Oh (作者) - Shanghai Jiao Tong University
D. Parkinson (作者) - Korea Astronomy and Space Science Institute
A. Rocher (作者) - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
A.J. Ross (作者) - The Ohio State University
V. Ruhlmann-Kleider (作者) - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
C.G. Sabiu (作者) - University of Seoul
K. Said (作者) - The University of Queensland
C. Saulder (作者) - Korea Astronomy and Space Science Institute
D. Sierra-Porta (作者) - Universidad Tecnológica de Bolívar
B. Weiner (作者) - University of Arizona
J. Yu (作者) - École Polytechnique Fédérale de Lausanne
P. Zarrouk (作者) - Centre National de la Recherche Scientifique
Y. Zhang (作者) - New York University
H. Zou (作者) - Chinese Academy of Sciences
S. Ahlen (作者) - Boston University
S. Bailey (作者) - Lawrence Berkeley National Laboratory
D. Brooks (作者) - University College London
A.P. Cooper (作者) - National Tsing Hua University
A. de la Macorra (作者) - Universidad Nacional Autónoma de México
A. Dey (作者) - NSF NOIRLab
G. Dhungana (作者) - Southern Methodist University
P. Doel (作者) - University College London
S. Eftekharzadeh (作者) - Ames Research Center
K. Fanning (作者) - University of Michigan
A. Font-Ribera (作者) - Institute for High Energy Physics
L. Garrison (作者) - Flatiron Health (United States)
E. Gaztañaga (作者) - Institute of Space Sciences
R. Kehoe (作者) - Southern Methodist University
T. Kisner (作者) - Lawrence Berkeley National Laboratory
A. Kremin (作者) - Lawrence Berkeley National Laboratory
M. Landriau (作者) - Lawrence Berkeley National Laboratory
L. Le Guillou (作者) - Centre National de la Recherche Scientifique
Michael E. Levi (作者) - Lawrence Berkeley National Laboratory
C. Magneville (作者) - Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Aaron M. Meisner (作者) - NSF NOIRLab
R. Miquel (作者) - Institució Catalana de Recerca i Estudis Avançats
J. Moustakas (作者) - Siena College
Adam D. Myers (作者) - University of Wyoming
Jeffrey A. Newman (作者) - University of Pittsburgh
J.D. Nie (作者) - Chinese Academy of Sciences
N. Palanque-Delabrouille (作者) - Lawrence Berkeley National Laboratory
W.J. Percival (作者) - University of Waterloo
C. Poppett (作者) - Lawrence Berkeley National Laboratory
F. Prada (作者) - Instituto de Astrofísica de Andalucía
M. Schubnell (作者) - University of Michigan
Gregory Tarlé (作者) - University of Michigan
B.A. Weaver (作者) - NSF NOIRLab
K. Zhang (作者) - Lawrence Berkeley National Laboratory
Zhimin Zhou (作者) - Chinese Academy of Sciences
學術資源類型: 期刊文章
出版日期: 01/2023
出版資訊: Astrophysical Journal, 卷.943(1), 68
語言: 英語

The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies

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