The Grism Lens-Amplified Survey from Space (GLASS). II. Gas-phase metallicity and radial gradients in an interacting system at z~2

Abstract

We present spatially resolved gas-phase metallicity for a system of three galaxies at z=1.85 detected in the Grism Lens-Amplified Survey from Space (GLASS). The combination of HST's diffraction limit and strong gravitational lensing by the cluster MACS J0717+3745 results in a spatial resolution of ~200-300 pc, enabling good spatial sampling despite the intrinsically small galaxy sizes. The galaxies in this system are separated by 50-200 kpc in projection and are likely in an early stage of interaction, evidenced by relatively high specific star formation rates. Their gas-phase metallicities are consistent with larger samples at similar redshift, star formation rate, and stellar mass. We obtain a precise measurement of the metallicity gradient for one galaxy and find a shallow slope compared to isolated galaxies at high redshift, consistent with a flattening of the gradient due to gravitational interaction. An alternative explanation for the shallow metallicity gradient and elevated star formation rate is rapid recycling of metal-enriched gas, but we find no evidence for enhanced gas-phase metallicities which should result from this effect. Notably, the measured stellar masses log(M/Msun) = 7.2-9.1 probe to an order of magnitude below previous mass-metallicity studies at this redshift. The lowest mass galaxy has properties similar to those expected for Fornax at this redshift, indicating that GLASS is able to directly study the progenitors of local group dwarf galaxies on spatially resolved scales. Larger samples from the full GLASS survey will be ideal for studying the effects of feedback, and the time evolution of metallicity gradients. These initial results demonstrate the utility of HST spectroscopy combined with gravitational lensing for characterizing resolved physical properties of galaxies at high redshift.

arXiv commentAJ in press. The GLASS website is at http://glass.physics.ucsb.edu

References in corpus (74)

• Stellar population synthesis at the resolution of 2003
• Star Formation in Galaxies Along the Hubble Sequence
• Planck 2013 results. XVI. Cosmological parameters
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• [O III]/[N II] as an Abundance Indicator at High Redshift
• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
• The 'Forbidden' Abundance of Oxygen in the Sun
• AMAZE. I. The evolution of the mass-metallicity relation at z>3
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• The Galactic disk mass function: reconciliation of the HST and nearby determinations
• Cluster Lensing And Supernova survey with Hubble (CLASH): An Overview
• Galaxies in a simulated $\Lambda$CDM Universe I: cold mode and hot cores
• Abundance Gradients and the Formation of the Milky Way
• Cuspy No More: How Outflows Affect the Central Dark Matter and Baryon Distribution in Lambda CDM Galaxies
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• A characteristic oxygen abundance gradient in galaxy disks unveiled with CALIFA
• The ACS Nearby Galaxy Survey Treasury VIII. The Global Star Formation Histories of 60 Dwarf Galaxies in the Local Volume
• Baryons Matter: Why Luminous Satellite Galaxies Have Reduced Central Masses
• Why Baryons Matter: The Kinematics of Dwarf Spheroidal Satellites
• New Strong Line Abundance Diagnostics for \HII Regions: Effects of $\kappa$-Distributed Electron Energies and New Atomic Data
• The Baryonic Assembly of Dark Matter Halos
• Metallicity evolution, metallicity gradients and gas fractions at z~3.4
• Gas accretion as the origin of chemical abundance gradients in distant galaxies
• Hierarchical formation of bulgeless galaxies: Why outflows have low angular momentum
• The SINS/zC-SINF survey of z~2 galaxy kinematics: Outflow properties
• Galaxy Mergers and the Mass-Metallicity Relation: Evidence for Nuclear Metal Dilution and Flattened Gradients from Numerical Simulations
• The Metallicity Evolution of Interacting Galaxies
• Metallicity Gradients in Disks: Do Galaxies Form Inside-Out?
• Ultraviolet Emission Lines in Young Low Mass Galaxies at z~2: Physical Properties and Implications for Studies at z>7
• Gas-Phase Oxygen Gradients in Strongly Interacting Galaxies: I. Early-Stage Interactions
• Lens models and magnification maps of the six Hubble Frontier Fields clusters
• Can Feedback Solve the Too Big to Fail Problem?
• Constraining Sub-Grid Physics with High-Redshift Spatially-Resolved Metallicity Distributions
• Chemo-spectrophotometric evolution of spiral galaxies: III. Abundance and colour gradients in discs
• Gas Metallicities in the Extended Disks of NGC 1512 and NGC 3621. Chemical Signatures of Metal Mixing or Enriched Gas Accretion?
• The Origin and Evolution of Metallicity Gradients: Probing the Mode of Mass Assembly at z=2
• Cosmological Galaxy Formation Simulations Using SPH
• The Baryon Cycle of Dwarf Galaxies: Dark, Bursty, Gas-Rich Polluters
• Multi-Element Abundance Measurements from Medium-Resolution Spectra. IV. Alpha Element Distributions in Milky Way Dwarf Satellite Galaxies
• MASSIV: Mass Assembly Survey with SINFONI in VVDS. III. Evidence for positive metallicity gradients in z~1.2 star-forming galaxies
• Metallicity Gradient of a Lensed Face-on Spiral Galaxy at Redshift 1.49
• An Integral Field Study of Abundance Gradients in Nearby LIRGs
• Through the looking GLASS: HST spectroscopy of faint galaxies lensed by the Frontier Fields cluster MACS0717.5+3745
• Low Masses and High Redshifts: The Evolution of the Mass-Metallicity Relation
• Spatially resolved Halpha maps and sizes of 57 strongly star-forming galaxies at z~1 from 3D-HST: evidence for rapid inside-out assembly of disk galaxies
• An estimate of the time variation of the O/H radial gradient from planetary nebulae
• Spectral classification of emission-line galaxies from the Sloan Digital Sky Survey. I. An improved classification for high redshift galaxies
• The Low Mass End of the Fundamental Relation for Gravitationally Lensed Star Forming Galaxies at 1<z<6
• Measurement of a Metallicity Gradient in a z=2 Galaxy: Implications for Inside-Out Assembly Histories
• Metal Transport to the Gaseous Outskirts of Galaxies
• A relationship between specific star formation rate and metallicity gradient within z=1 galaxies from KMOS-HiZELS
• Thermal-Instability-Driven Turbulent Mixing in Galactic Disks: I. Effective Mixing of Metals
• Testing the Universality of the Fundamental Metallicity Relation at High Redshift Using Low-Mass Gravitationally Lensed Galaxies
• A Deep Survey of the Fornax dSph I: Star Formation History
• Origin and Evolution of the Abundance Gradient along the Milky Way Disk
• 3D-HST Grism Spectroscopy of a Gravitationally Lensed, Low-metallicity Starburst Galaxy at z=1.847
• Systematics in Metallicity Gradient Measurements I : Angular Resolution, Signal-to-Noise and Annuli Binning
• Nebular Excitation in z~2 Star-forming Galaxies from the SINS and LUCI Surveys: The Influence of Shocks and AGN
• Strong Lensing by a Node of the Cosmic Web. The Core of MACS J0717.5+3745 at z=0.55
• The building up of the disk galaxy M33 and the evolution of the metallicity gradient
• A CANDELS WFC3 Grism Study of Emission-Line Galaxies at z~2: A Mix of Nuclear Activity and Low-Metallicity Star Formation
• The Mass-Metallicity Relation Of A Z~2 Protocluster With MOSFIRE
• Hubble Space Telescope Grism Spectroscopy of Extreme Starbursts Across Cosmic Time: The Role of Dwarf Galaxies in the Star Formation History of the Universe
• The merger rates and sizes of galaxies across the peak epoch of star formation from the HiZELS survey
• Cosmological Zoom Simulations of z = 2 Galaxies: The Impact of Galactic Outflows
• The Presence of Weak Active Galactic Nuclei in High Redshift Star Forming Galaxies
• Insights from the Outskirts: Chemical and Dynamical Properties in the outer Parts of the Fornax Dwarf Spheroidal Galaxy
• Properties of simulated Milky Way-mass galaxies in loose group and field environments
• The A2667 Giant Arc at z=1.03: Evidence for Large-scale Shocks at High Redshift
• Resolved Star Formation on Sub-galactic Scales in a Merger at z=1.7
• Spatially-resolved HST Grism Spectroscopy of a Lensed Emission Line Galaxy at z~1

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• SDSS-IV MaNGA: The Impact of Diffuse Ionized Gas on Emission-line Ratios, Interpretation of Diagnostic Diagrams, and Gas Metallicity Measurements
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• The Grism Lens-Amplified Survey from Space (GLASS). I. Survey overview and first data release
• "Direct" Gas-Phase Metallicity in Local Analogs of High-Redshift Galaxies: Empirical Metallicity Calibrations for High-Redshift Star-Forming Galaxies
• The evolution of metallicity and metallicity gradients from z=2.7-0.6 with KMOS3D
• The KLEVER Survey: Spatially resolved metallicity maps and gradients in a sample of 1.2 < z < 2.5 lensed galaxies
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• A Keck Survey of Gravitationally-Lensed Star-Forming Galaxies: High Spatial Resolution Studies of Kinematics and Metallicity Gradients
• CLEAR: The Gas-Phase Metallicity Gradients of Star-Forming Galaxies at 0.6 < z < 2.6
• Discovery of Strongly Inverted Metallicity Gradients in Dwarf Galaxies at $z$$\sim$2
• The Grism Lens-Amplified Survey from Space (GLASS) X. Sub-kpc resolution gas-phase metallicity maps at cosmic noon behind the Hubble Frontier Fields cluster MACS1149.6+2223
• Return to [Log-]Normalcy: Rethinking Quenching, The Star Formation Main Sequence, and Perhaps Much More
• First gas-phase metallicity gradients of $0.1\lesssim z\lesssim 0.8$ galaxies with MUSE
• Early results from GLASS-JWST. IV: Spatially resolved metallicity in a low-mass $z\sim 3$ galaxy with NIRISS
• 3-D gas-phase elemental abundances across the formation histories of Milky Way-mass galaxies in the FIRE simulations: initial conditions for chemical tagging
• Metallicity gradients in small and nearby spiral galaxies
• Metallicity gradients in Local Universe galaxies: time evolution and effects of radial migration
• A Census of Sub-kiloparsec Resolution Metallicity Gradients in Star-forming Galaxies at Cosmic Noon from HST Slitless Spectroscopy
• Gas-phase metallicity gradients in galaxies at $z\sim 6-8$
• MUSE-ALMA Halos V: Physical properties and environment of z < 1.4 HI quasar absorbers
• The gas metallicity gradient and the star formation activity of disc galaxies
• The evolution of the oxygen abundance gradients in star-forming galaxies in the EAGLE simulations
• Mass and Light of Abell 370: A Strong and Weak Lensing Analysis
• The mass-metallicity relation at z~1-2 and its dependence on star formation rate
• First Results from the KMOS Lens-Amplified Spectroscopic Survey (KLASS): Kinematics of Lensed Galaxies at Cosmic Noon
• The Grism Lens-Amplified Survey from Space (GLASS). IX. The dual origin of low-mass cluster galaxies as revealed by new structural analyses
• The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
• A versatile tool for cluster lensing source reconstruction. I. methodology and illustration on sources in the Hubble Frontier Field Cluster MACS J0717.5+3745
• A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS
• Probing Structure in Cold Gas at $z\lesssim 1$ with Gravitationally Lensed Quasar Sight Lines
• Early results from GLASS-JWST. XXVII. The mass-metallicity relation in lensed field galaxies at cosmic noon with NIRISS
• The OSIRIS Lens-Amplified Survey (OLAS) I: Dynamical Effects of Stellar Feedback in Low Mass Galaxies at z ~ 2
• Mass Modeling of Frontier Fields Cluster MACS J1149.5+2223 Using Strong and Weak Lensing
• The role of gas kinematics in setting metallicity gradients at high redshift
• Mild evolution of the stellar metallicity gradients of disc galaxies
• High Resolution spatial analysis of a z $\sim$ 2 lensed galaxy using adaptive coadded source-plane reconstruction
• The resolved chemical abundance properties within the interstellar medium of star-forming galaxies at $\text{z}\approx 1.5$
• Evolution of the radial ISM metallicity gradient in the Milky Way disk since redshift $\approx 3$
• Age and metal gradients in massive quiescent galaxies at $0.6\lesssim z\lesssim 1.0$: implications for quenching and assembly histories
• Ages and metallicities of quiescent galaxies: confronting broadband ($UVJ$) colours with stellar absorption lines
• The Grism Lens-Amplified Survey from Space (GLASS). XIII. G800L optical spectra from the parallel fields
• The Grism Lens-Amplified Survey from Space (GLASS). XII. Spatially Resolved Galaxy Star Formation Histories and True Evolutionary Paths at z > 1
• Strong Lensing Analysis of the Powerful Lensing Cluster MACS J2135.2-0102 ($z$=0.33)
• From order to chaos: the blurred out metallicity gradient of the Gaia-Enceladus/Sausage progenitor
• Pixel-level modelling of group-scale strong lens CASSOWARY 19
• The MOSDEF Survey: Probing Resolved Stellar Populations at $z\sim 2$ Using a New Bayesian-defined Morphology Metric Called Patchiness
• Prospects for extending the Mass-Metallicity Relation to low mass at high redshift: a case study at z~1
• The ALPINE-CRISTAL-JWST Survey: Gas-phase abundance gradients of main sequence star-forming galaxies and their kinematics at $4<z<6$