skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on May 21, 2020

Title: Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys

Abstract

We present a catalog of photometric redshifts and stellar masses for galaxies from imaging surveys serving the Dark Energy Spectroscopic Instrument project. The imaging footprints cover an area of over 14,000 deg 2. This catalog contains about 0.17 billion morphologically classified galaxies with r < 23 mag. It covers the redshift range of z < 1 and the mass range of $$8.4\lt \mathrm{log}({M}_{* })\lt 11.9$$. A total of five photometric bands are used, including three optical filters (g, r, and z) and two infrared filters ( Wide-field Infrared Survey Explorer W1 and W2). We use k-nearest neighbors and local linear regression algorithms to estimate photometric redshifts. Based on a spectroscopic sample of about 2.2 million galaxies, we achieve a redshift bias of $$\overline{{\rm{\Delta }}{z}_{\mathrm{norm}}}$$ = 2.4 × 10 -4, accuracy of $${\sigma }_{{\rm{\Delta }}{z}_{\mathrm{norm}}}$$ = 0.017, and outlier rate of about 5.1%. The stellar mass and other physical parameters are derived by stellar population synthesis model fitting based on our photometric redshifts. The differences in $$\mathrm{log}({M}_{* })$$ derived using spectroscopic and photometric redshifts present a 1σ dispersion of 0.09 dex.

Authors:
ORCiD logo [1];  [2];  [1]; ORCiD logo [3]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Key Lab. of Optical Astronomy, National Astronomical Observatories
  2. Chinese Academy of Sciences (CAS), Beijing (China). Key Lab. of Optical Astronomy, National Astronomical Observatories; Univ. of Chinese Academy of Sciences (CAS), Beijing (China). School of Astronomy and Space Science
  3. Univ. of Science and Technology of China, Hefei (China). Key Lab. for Research in Galaxies and Cosmology, Dept. of Astronomy
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1528875
Grant/Contract Number:  
[AC02-05CH1123]
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
[Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 242; Journal Issue: 1]; Journal ID: ISSN 1538-4365
Publisher:
American Astronomical Society/IOP
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: clusters: general; galaxies: distances and redshifts; galaxies: photometry

Citation Formats

Zou, Hu, Gao, Jinghua, Zhou, Xu, and Kong, Xu. Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys. United States: N. p., 2019. Web. doi:10.3847/1538-4365/ab1847.
Zou, Hu, Gao, Jinghua, Zhou, Xu, & Kong, Xu. Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys. United States. doi:10.3847/1538-4365/ab1847.
Zou, Hu, Gao, Jinghua, Zhou, Xu, and Kong, Xu. Tue . "Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys". United States. doi:10.3847/1538-4365/ab1847.
@article{osti_1528875,
title = {Photometric Redshifts and Stellar Masses for Galaxies from the DESI Legacy Imaging Surveys},
author = {Zou, Hu and Gao, Jinghua and Zhou, Xu and Kong, Xu},
abstractNote = {We present a catalog of photometric redshifts and stellar masses for galaxies from imaging surveys serving the Dark Energy Spectroscopic Instrument project. The imaging footprints cover an area of over 14,000 deg2. This catalog contains about 0.17 billion morphologically classified galaxies with r < 23 mag. It covers the redshift range of z < 1 and the mass range of $8.4\lt \mathrm{log}({M}_{* })\lt 11.9$. A total of five photometric bands are used, including three optical filters (g, r, and z) and two infrared filters (Wide-field Infrared Survey Explorer W1 and W2). We use k-nearest neighbors and local linear regression algorithms to estimate photometric redshifts. Based on a spectroscopic sample of about 2.2 million galaxies, we achieve a redshift bias of $\overline{{\rm{\Delta }}{z}_{\mathrm{norm}}}$ = 2.4 × 10-4, accuracy of ${\sigma }_{{\rm{\Delta }}{z}_{\mathrm{norm}}}$ = 0.017, and outlier rate of about 5.1%. The stellar mass and other physical parameters are derived by stellar population synthesis model fitting based on our photometric redshifts. The differences in $\mathrm{log}({M}_{* })$ derived using spectroscopic and photometric redshifts present a 1σ dispersion of 0.09 dex.},
doi = {10.3847/1538-4365/ab1847},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = [1],
volume = [242],
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on May 21, 2020
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

The Hyper Suprime-Cam SSP Survey: Overview and survey design
journal, September 2017

  • Aihara, Hiroaki; Arimoto, Nobuo; Armstrong, Robert
  • Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1
  • DOI: 10.1093/pasj/psx066

THE DIFFERENTIAL SIZE GROWTH OF FIELD AND CLUSTER GALAXIES AT z = 2.1 USING THE ZFOURGE SURVEY
journal, June 2015

  • Allen, Rebecca J.; Kacprzak, Glenn G.; Spitler, Lee R.
  • The Astrophysical Journal, Vol. 806, Issue 1
  • DOI: 10.1088/0004-637X/806/1/3

GPz: non-stationary sparse Gaussian processes for heteroscedastic uncertainty estimation in photometric redshifts
journal, July 2016

  • Almosallam, Ibrahim A.; Jarvis, Matt J.; Roberts, Stephen J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 1
  • DOI: 10.1093/mnras/stw1618

Cosmology and Fundamental Physics with the Euclid Satellite
journal, September 2013

  • Amendola, Luca; Appleby, Stephen; Bacon, David
  • Living Reviews in Relativity, Vol. 16, Issue 1
  • DOI: 10.12942/lrr-2013-6

Photometric redshifts for the SDSS Data Release 12
journal, April 2016

  • Beck, Róbert; Dobos, László; Budavári, Tamás
  • Monthly Notices of the Royal Astronomical Society, Vol. 460, Issue 2
  • DOI: 10.1093/mnras/stw1009

Stellar Mass‐to‐Light Ratios and the Tully‐Fisher Relation
journal, March 2001

  • Bell, Eric F.; de Jong, Roelof S.
  • The Astrophysical Journal, Vol. 550, Issue 1
  • DOI: 10.1086/319728

Bayesian Photometric Redshift Estimation
journal, June 2000

  • Benitez, Narciso
  • The Astrophysical Journal, Vol. 536, Issue 2
  • DOI: 10.1086/308947

WISE × SuperCOSMOS PHOTOMETRIC REDSHIFT CATALOG: 20 MILLION GALAXIES OVER 3 π STERADIANS
journal, July 2016

  • Bilicki, Maciej; Peacock, John A.; Jarrett, Thomas H.
  • The Astrophysical Journal Supplement Series, Vol. 225, Issue 1
  • DOI: 10.3847/0067-0049/225/1/5

Relationship between Environment and the Broadband Optical Properties of Galaxies in the Sloan Digital Sky Survey
journal, August 2005

  • Blanton, Michael R.; Eisenstein, Daniel; Hogg, David W.
  • The Astrophysical Journal, Vol. 629, Issue 1
  • DOI: 10.1086/422897

EAZY: A Fast, Public Photometric Redshift Code
journal, October 2008

  • Brammer, Gabriel B.; van Dokkum, Pieter G.; Coppi, Paolo
  • The Astrophysical Journal, Vol. 686, Issue 2
  • DOI: 10.1086/591786

Stellar population synthesis at the resolution of 2003
journal, October 2003


The Dust Content and Opacity of Actively Star‐forming Galaxies
journal, April 2000

  • Calzetti, Daniela; Armus, Lee; Bohlin, Ralph C.
  • The Astrophysical Journal, Vol. 533, Issue 2
  • DOI: 10.1086/308692

The 2dF-SDSS LRG and QSO (2SLAQ) Luminous Red Galaxy Survey
journal, October 2006


Random Forests for Photometric Redshifts
journal, March 2010

  • Carliles, Samuel; Budavári, Tamás; Heinis, Sébastien
  • The Astrophysical Journal, Vol. 712, Issue 1
  • DOI: 10.1088/0004-637X/712/1/511

TPZ: photometric redshift PDFs and ancillary information by using prediction trees and random forests
journal, May 2013

  • Carrasco Kind, Matias; Brunner, Robert J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 432, Issue 2
  • DOI: 10.1093/mnras/stt574

Galactic Stellar and Substellar Initial Mass Function
journal, July 2003

  • Chabrier, Gilles
  • Publications of the Astronomical Society of the Pacific, Vol. 115, Issue 809
  • DOI: 10.1086/376392

STELLAR MASSES AND STAR FORMATION RATES FOR 1 M GALAXIES FROM SDSS+ WISE
journal, July 2015

  • Chang, Yu-Yen; Wel, Arjen van der; Cunha, Elisabete da
  • The Astrophysical Journal Supplement Series, Vol. 219, Issue 1
  • DOI: 10.1088/0067-0049/219/1/8

The 2dF Galaxy Redshift Survey: spectra and redshifts
journal, December 2001


Modeling the Panchromatic Spectral Energy Distributions of Galaxies
journal, August 2013


Photometric redshifts for the CFHTLS T0004 deep and wide fields
journal, April 2009


Science Objectives and Early Results of the DEEP2 Redshift Survey
conference, February 2003

  • Davis, Marc; Faber, Sandra M.; Newman, Jeffrey
  • Astronomical Telescopes and Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.457897

Overview of the DESI Legacy Imaging Surveys
journal, April 2019

  • Dey, Arjun; Schlegel, David J.; Lang, Dustin
  • The Astronomical Journal, Vol. 157, Issue 5
  • DOI: 10.3847/1538-3881/ab089d

The WiggleZ Dark Energy Survey: survey design and first data release
journal, January 2010

  • Drinkwater, Michael J.; Jurek, Russell J.; Blake, Chris
  • Monthly Notices of the Royal Astronomical Society, Vol. 401, Issue 3
  • DOI: 10.1111/j.1365-2966.2009.15754.x

Galaxy Luminosity Functions to z ∼1 from DEEP2 and COMBO‐17: Implications for Red Galaxy Formation
journal, August 2007

  • Faber, S. M.; Willmer, C. N. A.; Wolf, C.
  • The Astrophysical Journal, Vol. 665, Issue 1
  • DOI: 10.1086/519294

Gaia Data Release 1 : Summary of the astrometric, photometric, and survey properties
journal, November 2016


A Photometric Redshift Catalog Based on SCUSS, SDSS, and WISE Surveys
journal, July 2018


The VIMOS Public Extragalactic Survey (VIPERS): First Data Release of 57 204 spectroscopic measurements
journal, January 2014


The Vimos VLT deep survey: Global properties of 20 000 galaxies in the
journal, June 2008


Candels: the Cosmic Assembly Near-Infrared deep Extragalactic Legacy Survey
journal, December 2011

  • Grogin, Norman A.; Kocevski, Dale D.; Faber, S. M.
  • The Astrophysical Journal Supplement Series, Vol. 197, Issue 2
  • DOI: 10.1088/0067-0049/197/2/35

The XXL Survey: XXII. The XXL-North spectrophotometric sample and galaxy stellar mass function in X-ray detected groups and clusters★
journal, November 2018


The SuperCOSMOS Sky Survey - I. Introduction and description
journal, October 2001


GAz: a genetic algorithm for photometric redshift estimation
journal, March 2015

  • Hogan, Robert; Fairbairn, Malcolm; Seeburn, Navin
  • Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 2
  • DOI: 10.1093/mnras/stv430

Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
journal, June 2015


Accurate photometric redshifts for the CFHT legacy survey calibrated using the VIMOS VLT deep survey
journal, September 2006


COSMOS PHOTOMETRIC REDSHIFTS WITH 30-BANDS FOR 2-deg 2
journal, December 2008


The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures
journal, October 2009


The 6dF Galaxy Survey: samples, observational techniques and the first data release
journal, December 2004


The environmental dependence of the relations between stellar mass, structure, star formation and nuclear activity in galaxies: Galaxy structure, star formation and nuclear activity
journal, August 2004

  • Kauffmann, Guinevere; White, Simon D. M.; Heckman, Timothy M.
  • Monthly Notices of the Royal Astronomical Society, Vol. 353, Issue 3
  • DOI: 10.1111/j.1365-2966.2004.08117.x

THE COSMOS2015 CATALOG: EXPLORING THE 1 < z < 6 UNIVERSE WITH HALF A MILLION GALAXIES
journal, June 2016

  • Laigle, C.; McCracken, H. J.; Ilbert, O.
  • The Astrophysical Journal Supplement Series, Vol. 224, Issue 2
  • DOI: 10.3847/0067-0049/224/2/24

The UKIRT Infrared Deep Sky Survey (UKIDSS)
journal, August 2007


Weak Gravitational Lensing with COSMOS: Galaxy Selection and Shape Measurements
journal, September 2007

  • Leauthaud, Alexie; Massey, Richard; Kneib, Jean‐Paul
  • The Astrophysical Journal Supplement Series, Vol. 172, Issue 1
  • DOI: 10.1086/516598

The VIMOS VLT deep survey: First epoch VVDS-deep survey: 11 564 spectra with 17.5 
journal, August 2005


The Canada-France Redshift Survey. I. Introduction to the Survey, Photometric Catalogs, and Surface Brightness Selection Effects
journal, December 1995

  • Lilly, S. J.; Le Fevre, O.; Crampton, David
  • The Astrophysical Journal, Vol. 455
  • DOI: 10.1086/176555

zCOSMOS: A Large VLT/VIMOS Redshift Survey Covering 0 < z < 3 in the COSMOS Field
journal, September 2007

  • Lilly, S. J.; Fevre, O. Le; Renzini, A.
  • The Astrophysical Journal Supplement Series, Vol. 172, Issue 1
  • DOI: 10.1086/516589

INITIAL PERFORMANCE OF THE NEOWISE REACTIVATION MISSION
journal, August 2014


Mapping the Galaxy Color–Redshift Relation: Optimal Photometric Redshift Calibration Strategies for Cosmology Surveys
journal, October 2015


FULL-DEPTH COADDS OF THE WISE AND FIRST-YEAR NEOWISE-REACTIVATION IMAGES
journal, December 2016


A NEAR-INFRARED SPECTROSCOPIC SURVEY OF K-SELECTED GALAXIES AT z ∼ 2.3: COMPARISON OF STELLAR POPULATION SYNTHESIS CODES AND CONSTRAINTS FROM THE REST-FRAME NIR
journal, August 2009


The Deep2 Galaxy Redshift Survey: Design, Observations, data Reduction, and Redshifts
journal, August 2013

  • Newman, Jeffrey A.; Cooper, Michael C.; Davis, Marc
  • The Astrophysical Journal Supplement Series, Vol. 208, Issue 1
  • DOI: 10.1088/0067-0049/208/1/5

Star Formation in AEGIS Field Galaxies since z  = 1.1: The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-forming Galaxies
journal, April 2007

  • Noeske, K. G.; Weiner, B. J.; Faber, S. M.
  • The Astrophysical Journal, Vol. 660, Issue 1
  • DOI: 10.1086/517926

The WiggleZ Dark Energy Survey: Final data release and cosmological results
journal, November 2012


The Morphology‐Density Relation in z ∼ 1 Clusters
journal, April 2005

  • Postman, M.; Franx, M.; Cross, N. J. G.
  • The Astrophysical Journal, Vol. 623, Issue 2
  • DOI: 10.1086/428881

Uvudf: Ultraviolet Through Near-Infrared Catalog and Photometric Redshifts of Galaxies in the Hubble Ultra deep Field
journal, July 2015

  • Rafelski, Marc; Teplitz, Harry I.; Gardner, Jonathan P.
  • The Astronomical Journal, Vol. 150, Issue 1
  • DOI: 10.1088/0004-6256/150/1/31

ANNz2: Photometric Redshift and Probability Distribution Function Estimation using Machine Learning
journal, August 2016


Photometric redshift analysis in the Dark Energy Survey Science Verification data
journal, October 2014

  • Sánchez, C.; Carrasco Kind, M.; Lin, H.
  • Monthly Notices of the Royal Astronomical Society, Vol. 445, Issue 2
  • DOI: 10.1093/mnras/stu1836

Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
journal, June 1998

  • Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc
  • The Astrophysical Journal, Vol. 500, Issue 2
  • DOI: 10.1086/305772

The Cosmic Evolution Survey (COSMOS): Overview
journal, September 2007

  • Scoville, N.; Aussel, H.; Brusa, M.
  • The Astrophysical Journal Supplement Series, Vol. 172, Issue 1
  • DOI: 10.1086/516585

The Two Micron All Sky Survey (2MASS)
journal, February 2006

  • Skrutskie, M. F.; Cutri, R. M.; Stiening, R.
  • The Astronomical Journal, Vol. 131, Issue 2
  • DOI: 10.1086/498708

Photometric redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
journal, October 2017

  • Tanaka, Masayuki; Coupon, Jean; Hsieh, Bau-Ching
  • Publications of the Astronomical Society of Japan, Vol. 70, Issue SP1
  • DOI: 10.1093/pasj/psx077

GALAXY STELLAR MASS FUNCTIONS FROM ZFOURGE/CANDELS: AN EXCESS OF LOW-MASS GALAXIES SINCE z = 2 AND THE RAPID BUILDUP OF QUIESCENT GALAXIES
journal, February 2014


The Origin of the Mass‐Metallicity Relation: Insights from 53,000 Star‐forming Galaxies in the Sloan Digital Sky Survey
journal, October 2004

  • Tremonti, Christy A.; Heckman, Timothy M.; Kauffmann, Guinevere
  • The Astrophysical Journal, Vol. 613, Issue 2
  • DOI: 10.1086/423264

THE STAR FORMATION MASS SEQUENCE OUT TO z = 2.5
journal, July 2012

  • Whitaker, Katherine E.; van Dokkum, Pieter G.; Brammer, Gabriel
  • The Astrophysical Journal, Vol. 754, Issue 2
  • DOI: 10.1088/2041-8205/754/2/L29

The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance
journal, November 2010


The CNOC2 Field Galaxy Redshift Survey. I. The Survey and the Catalog for the Patch CNOC 0223+00
journal, August 2000

  • Yee, H. K. C.; Morris, S. L.; Lin, H.
  • The Astrophysical Journal Supplement Series, Vol. 129, Issue 2
  • DOI: 10.1086/313426

The Sloan Digital Sky Survey: Technical Summary
journal, September 2000

  • York, Donald G.; Adelman, J.; Anderson, Jr., John E.
  • The Astronomical Journal, Vol. 120, Issue 3
  • DOI: 10.1086/301513

Resolved stellar mass maps of galaxies – I. Method and implications for global mass estimates
journal, December 2009

  • Zibetti, Stefano; Charlot, Stéphane; Rix, Hans-Walter
  • Monthly Notices of the Royal Astronomical Society, Vol. 400, Issue 3
  • DOI: 10.1111/j.1365-2966.2009.15528.x

The Second Data Release of the Beijing–Arizona Sky Survey
journal, August 2018

  • Zou, Hu; Zhang, Tianmeng; Zhou, Zhimin
  • The Astrophysical Journal Supplement Series, Vol. 237, Issue 2
  • DOI: 10.3847/1538-4365/aad502

Project Overview of the Beijing–Arizona Sky Survey
journal, April 2017

  • Zou, Hu; Zhou, Xu; Fan, Xiaohui
  • Publications of the Astronomical Society of the Pacific, Vol. 129, Issue 976
  • DOI: 10.1088/1538-3873/aa65ba