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A Large Sample of Extremely Metal-poor Galaxies at z < 1 Identified from the DESI Early Data

Journal Article · · The Astrophysical Journal
 [1];  [2];  [3];  [3];  [4];  [5];  [6];  [6];  [7];  [8];  [9];  [10];  [3];  [9];  [11];  [12];  [3];  [13];  [9];  [14] more »;  [9];  [15];  [16];  [6];  [16];  [7];  [17];  [18];  [19];  [20];  [21];  [21];  [22];  [7];  [23] « less
  1. Chinese Academy of Sciences, Beijing (China); University of Chinese Academy of Sciences, Beijing (China); University of Michigan, Ann Arbor MI
  2. Chinese Academy of Sciences, Beijing (China); University of Chinese Academy of Sciences, Beijing (China)
  3. University College London (United Kingdom)
  4. Siena College, Loudonville, NY (United States)
  5. Institute of Space Sciences, ICE-CSIC, Barcelona (Spain)
  6. NSF's NOIRLab, Tucson, AZ (United States)
  7. Chinese Academy of Sciences, Beijing (China)
  8. University of Portsmouth (United Kingdom)
  9. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  10. Boston University, MA (United States)
  11. University of Utah, Salt Lake City, UT (United States)
  12. Universidad Nacional Autónoma de México (Mexico)
  13. Universidad de los Andes, Bogotá (Colombia)
  14. The Ohio State University, Columbus, OH (United States)
  15. Sorbonne Université, Paris (France)
  16. The Barcelona Institute of Science and Technology (Spain)
  17. University of California, Berkeley, CA (United States)
  18. Kansas State University, Manhattan, KS (United States)
  19. Sejong University, Seoul (Korea, Republic of)
  20. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid (Spain)
  21. Ohio University, Athens, OH (United States)
  22. University of Michigan, Ann Arbor, MI (United States)
  23. Tsinghua University, Beijing (China)
+ Show Author Affiliations
Extremely metal-poor galaxies (XMPGs) at relatively low redshift are excellent laboratories for studying galaxy formation and evolution in the early universe. Much effort has been spent on identifying them from large-scale spectroscopic surveys or spectroscopic follow-up observations. Previous work has identified a few hundred XMPGs. In this work, we obtain a large sample of 223 XMPGs at z < 1 from the early data of the Dark Energy Spectroscopic Instrument (DESI). The oxygen abundance is determined using the direct Te method based on the detection of the [O iii]λ4363 line. The sample includes 95 confirmed XMPGs based on the oxygen abundance uncertainty; the remaining 128 galaxies are regarded as XMPG candidates. These XMPGs are only 0.01% of the total DESI observed galaxies. Their coordinates and other properties are provided in the paper. The most XMPGs have an oxygen abundance of ~1/34 Z⊙, a stellar mass of about 1.5 × 107M⊙, and a star formation rate of 0.22 M⊙ yr–1. The two most XMPGs present distinct morphologies suggesting different formation mechanisms. The local environmental investigation shows that XMPGs preferentially reside in relatively low-density regions. Many of them fall below the stellar mass–metallicity relations (MZRs) of normal star-forming galaxies. From a comparison of the MZR with theoretical simulations, it appears that XMPGs are good analogs to high-redshift star-forming galaxies. The nature of these XMPG populations will be further investigated in detail with larger and more complete samples from the ongoing DESI survey.
Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States); University of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
Beijing Municipal Natural Science Foundation; National Key R&D Program of China; National Natural Science Foundation of China; USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; SC0019193
Other Award/Contract Number:
2022YFA1602902
2023YFA1607800
12120101003
12373010
11890691
1222028
OSTI ID:
2375034
Alternate ID(s):
OSTI ID: 3007500
Journal Information:
The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 2 Vol. 961; ISSN 0004-637X
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (96)

The most metal-poor galaxies journal June 2000
Breit–Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences journal May 2004
Temperature inhomogeneities cause the abundance discrepancy in H ii regions journal May 2023
Hierarchical galaxy formation: Hierarchical galaxy formation journal November 2000
New light on the search for low-metallicity galaxies — I. The N2 calibrator journal February 2002
Stellar population synthesis at the resolution of 2003 journal October 2003
Spectral classification of emission-line galaxies from the Sloan Digital Sky Survey: I. An improved classification for high-redshift galaxies journal January 2010
PyNeb: a new tool for analyzing emission lines: I. Code description and validation of results journal December 2014
Discovering extremely compact and metal-poor, star-forming dwarf galaxies out to z ~ 0.9 in the VIMOS Ultra-Deep Survey journal August 2014
CIGALE: a python Code Investigating GALaxy Emission journal February 2019
The chemical make-up of the Sun: A 2020 vision journal September 2021
AMAZE: I. The evolution of the mass–metallicity relation at journal July 2008
Classification parameters for the emission-line spectra of extragalactic objects journal February 1981
The relationship between infrared, optical, and ultraviolet extinction journal October 1989
Galaxy formation through hierarchical clustering journal September 1991
Spectral classification of emission-line galaxies journal February 1987
Dust in an Extremely Metal‐Poor Galaxy: Mid‐infrared Observations of SBS 0335−052 journal May 1999
A Simple Model for the Absorption of Starlight by Dust in Galaxies journal August 2000
Optical Classification of Southern Warm Infrared Galaxies journal January 2001
Galactic Stellar and Substellar Initial Mass Function journal July 2003
Systematic Effects and a New Determination of the Primordial Abundance of 4 He and d Y / d Z from Observations of Blue Compact Galaxies journal February 2004
The Origin of the Mass‐Metallicity Relation: Insights from 53,000 Star‐forming Galaxies in the Sloan Digital Sky Survey journal October 2004
The Mass‐Metallicity Relation at z ≳2 journal June 2006
Clues to the Origin of the Mass-Metallicity Relation: Dependence on Star Formation Rate and Galaxy Size journal December 2007
Metallicity Calibrations and the Mass‐Metallicity Relation for Star‐forming Galaxies journal July 2008
Mmt Extremely Metal-Poor Galaxy Survey. i. an Efficient Technique for Identifying Metal-Poor Galaxies journal November 2007
A NEW DIAGNOSTIC OF ACTIVE GALACTIC NUCLEI: REVEALING HIGHLY ABSORBED SYSTEMS AT REDSHIFT >0.3 journal July 2011
Systematic Search for Extremely Metal-Poor Galaxies in the Sloan Digital sky Survey journal November 2011
DUST-TO-GAS RATIO IN THE EXTREMELY METAL-POOR GALAXY I Zw 18 journal June 2012
The Mass-Metallicity Relation with the Direct Method on Stacked Spectra of sdss Galaxies journal February 2013
Gas Regulation of Galaxies: the Evolution of the Cosmic Specific star Formation Rate, the Metallicity-Mass-Star-Formation rate Relation, and the Stellar Content of Halos journal July 2013
“Direct” Gas-Phase Metallicities, Stellar Properties, and Local Environments of Emission-Line Galaxies at Redshifts Below 0.90 journal December 2013
Andromeda'S dust journal December 2013
Metal-Poor Dwarf Galaxies in the Sigrid Galaxy Sample. i. h ii Region Observations and Chemical Abundances journal April 2014
ACTIVE GALACTIC NUCLEI EMISSION LINE DIAGNOSTICS AND THE MASS-METALLICITY RELATION UP TO REDSHIFT z ∼ 2: THE IMPACT OF SELECTION EFFECTS AND EVOLUTION journal May 2014
Extremely Metal-Poor Galaxies: the Environment journal March 2015
Metal-Poor, Strongly Star-Forming Galaxies in the Deep2 Survey: the Relationship Between Stellar Mass, Temperature-Based Metallicity, and star Formation rate journal May 2015
Breit–Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur journal April 2010
OPTICAL SPECTROSCOPY AND NEBULAR OXYGEN ABUNDANCES OF THE SPITZER /SINGS GALAXIES journal September 2010
Project Overview of the Beijing–Arizona Sky Survey journal April 2017
A sample of metal-poor galaxies identified from the LAMOST spectral survey journal April 2017
Photometric Redshifts and Galaxy Clusters for DES DR2, DESI DR9, and HSC-SSP PDR3 Data journal May 2022
The Chemical Evolution of Star-Forming Galaxies over the last 11 Billion Years journal June 2013
Localized Starbursts in Dwarf Galaxies Produced by the Impact of Low-Metallicity Cosmic gas Clouds journal September 2015
Recombination-line intensities for hydrogenic ions - I. Case B calculations for H I and He II journal February 1987
The chemical enrichment in the early Universe as probed by JWST via direct metallicity measurements at z ∼ 8 journal September 2022
Efficient formation of massive galaxies at cosmic dawn by feedback-free starbursts journal May 2023
Collision strengths for nebular [O iii] optical and infrared lines journal May 2014
The origin and evolution of the galaxy mass–metallicity relation journal December 2015
Constraints on the production and escape of ionizing radiation from the emission-line spectra of metal-poor star-forming galaxies journal September 2019
x-cigale: fitting AGN/galaxy SEDs from X-ray to infrared journal October 2019
Similar star formation rate and metallicity variability time-scales drive the fundamental metallicity relation journal March 2018
The host galaxies of active galactic nuclei journal December 2003
The luminosity-metallicity relation in the local Universe from the 2dF Galaxy Redshift Survey journal May 2004
Semi-empirical analysis of Sloan Digital Sky Survey galaxies - I. Spectral synthesis method journal April 2005
Electron-impact excitation of O ii fine-structure levels journal August 2009
Galaxy Zoo Green Peas: discovery of a class of compact extremely star-forming galaxies journal November 2009
A fundamental relation between mass, star formation rate and metallicity in local and high-redshift galaxies: The fundamental metallicity relation journal September 2010
Galaxy evolution in cosmological simulations with outflows - II. Metallicities and gas fractions: Galaxy evolution in simulations - II journal July 2011
Star Formation in Galaxies Along the Hubble Sequence journal September 1998
Search for Extremely Metal-Poor Galaxies in the Sloan Digital sky Survey. ii. high Electron Temperature Objects journal March 2016
THE METAL ABUNDANCES ACROSS COSMIC TIME (${ \mathcal M }{ \mathcal A }{ \mathcal C }{ \mathcal T }$) SURVEY. II. EVOLUTION OF THE MASS–METALLICITY RELATION OVER 8 BILLION YEARS, USING [O iii] λ 4363 Å BASED METALLICITIES journal September 2016
Stellar Populations and star Formation History of the Metal-Poor Dwarf Galaxy ddo 68 journal September 2016
Overview of the DESI Legacy Imaging Surveys journal April 2019
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument journal October 2022
The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI) journal December 2022
The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument journal January 2023
Target Selection and Validation of DESI Luminous Red Galaxies journal January 2023
The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra journal February 2023
The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument journal March 2023
Target Selection and Validation of DESI Emission Line Galaxies journal February 2023
The DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation journal May 2023
Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument journal July 2023
Survey Operations for the Dark Energy Spectroscopic Instrument journal November 2023
Kinematics of Extremely Metal-Poor Galaxies: Evidence for Stellar Feedback journal January 2017
Blueberry Galaxies: The Lowest Mass Young Starbursts journal September 2017
Searching for the Lowest-metallicity Galaxies in the Local Universe journal August 2018
Mass–Metallicity Relation and Fundamental Metallicity Relation of Metal-poor Star-forming Galaxies at 0.6 < Z < 0.9 from the eBOSS Survey journal December 2018
The Detection of [O iii] λ4363 in a Lensed, Dwarf Galaxy at z = 2.59: Testing Metallicity Indicators and Scaling Relations at High Redshift and Low Mass* journal December 2019
The PHLEK Survey: A New Determination of the Primordial Helium Abundance journal June 2020
Extremely Metal-poor Representatives Explored by the Subaru Survey (EMPRESS). I. A Successful Machine-learning Selection of Metal-poor Galaxies and the Discovery of a Galaxy with M * < 10 6 M ⊙ and 0.016 Z ⊙ journal August 2020
EMPRESS. IV. Extremely Metal-poor Galaxies Including Very Low-mass Primordial Systems with M * = 104–105 M ⊙ and 2%–3% (O/H): High (Fe/O) Suggestive of Metal Enrichment by Hypernovae/Pair-instability Supernovae journal January 2022
Fitting AGN/Galaxy X-Ray-to-radio SEDs with CIGALE and Improvement of the Code journal March 2022
EMPRESS. VI. Outflows Investigated in Low-mass Galaxies with M ∗ = 104–107 M ⊙: Weak Feedback in Low-mass Galaxies? journal April 2022
EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension journal December 2022
The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies journal January 2023
Overview of the DESI Milky Way Survey journal April 2023
Target Selection and Validation of DESI Quasars journal February 2023
Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program journal September 2023
COSMOS2020: A Panchromatic View of the Universe to z ∼ 10 from Two Complementary Catalogs journal January 2022
THE MOSDEF SURVEY: DETECTION OF [O III] λ 4363 AND THE DIRECT-METHOD OXYGEN ABUNDANCE OF A STAR-FORMING GALAXY AT z = 3.08 journal July 2016
Preliminary Target Selection for the DESI Quasar (QSO) Sample journal October 2020
Preliminary Target Selection for the DESI Emission Line Galaxy (ELG) Sample journal October 2020
Preliminary Target Selection for the DESI Luminous Red Galaxy (LRG) Sample journal October 2020
Preliminary Target Selection for the DESI Milky Way Survey (MWS) journal October 2020
Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS) journal October 2020

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
dwarf galaxies
metallicity
redshift surveys
scaling relations