Photometric metallicity map of the Large Magellanic Cloud

Abstract

We have estimated a metallicity map of the Large Magellanic Cloud (LMC) using the Magellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data. This is a first of its kind map of metallicity up to a radius of 4 - 5 degrees, derived using photometric data and calibrated using spectroscopic data of Red Giant Branch (RGB) stars. We identify the RGB in the V, (V$-$I) colour magnitude diagrams of small subregions of varying sizes in both data sets. We use the slope of the RGB as an indicator of the average metallicity of a subregion, and calibrate the RGB slope to metallicity using spectroscopic data for field and cluster red giants in selected subregions. The average metallicity of the LMC is found to be [Fe/H] = $-$0.37 dex ($\sigma$[Fe/H] = 0.12) from MCPS data, and [Fe/H] = $-$0.39 dex ($\sigma$[Fe/H] = 0.10) from OGLE III data. The bar is found be the most metal-rich region of the LMC. Both the data sets suggest a shallow radial metallicity gradient up to a radius of 4 kpc ($-$0.049$\pm$0.002 dex kpc${}^{-1}$ to $-$0.066$\pm$0.006 dex kpc${}^{-1}$). Subregions in which the mean metallicity differs from the surrounding areas do not appear to correlate with previously known features; spectroscopic studies are required in order to assess their physical significance.

arXiv comment28 pages, 40 figures, 7 tables, Accepted for publication in MNRAS. arXiv admin note: text overlap with arXiv:1101.1771, arXiv:1302.6211 by other authors

References in corpus (49)

• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• Are the Magellanic Clouds on their First Passage about the Milky Way?
• The Magellanic Clouds Photometric Survey: The Large Magellanic Cloud Stellar Catalog and Extinction Map
• The Magellanic Clouds Photometric Survey: The Small Magellanic Cloud Stellar Catalog and Extinction Map
• Uncovering Extremely Metal-Poor Stars in the Milky Way's Ultra-Faint Dwarf Spheroidal Satellite Galaxies
• A New Look at the Large-Scale HI Structure of the LMC
• Metallicity Gradients and Gas Flows in Galaxy Pairs
• Age Determination of Six Intermediate-age SMC Star Clusters with HST/ACS
• Metallicity Gradients in Disks: Do Galaxies Form Inside-Out?
• The impact of gas inflows on star formation rates and metallicities in barred galaxies
• Star formation history of barred disc galaxies
• Ca II Triplet Spectroscopy of Giants in SMC Star Clusters: Abundances, Velocities and the Age-Metallicity Relation
• Magellanic Cloud Structure from Near-IR Surveys II: Star Count Maps and the Intrinsic Elongation of the LMC
• Spectroscopy of Red Giants in the LMC Bar: Abundances, Kinematics, and the Age-Metallicity Relation
• Spectroscopic Survey of Red Giants in the SMC. I: Kinematics
• A Search for Old Star Clusters in the Large Magellanic Cloud
• Chemical abundances in LMC stellar populations I. The Inner disk sample Based on observations collected at the VLT UT2 telescope
• Calcium II Triplet Spectroscopy of LMC Red Giants. I. Abundances and Velocities for a Sample of Populous Clusters
• A Population of Accreted SMC Stars in the LMC
• The Chemical Enrichment History of the Large Magellanic Cloud
• The Chemical Enrichment History of the Small Magellanic Cloud and Its Gradients
• Chemical abundances in LMC stellar populations. II. The bar sample
• The metallicity gradient as a tracer of history and structure: the Magellanic Clouds and M33 galaxies
• The 3D structure of the Small Magellanic Cloud
• Depth estimation of the Large and Small Magellanic Clouds
• The VMC Survey - XIV. First results on the look-back time star-formation rate tomography of the Small Magellanic Cloud
• The VMC Survey. XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids
• The Morphologies of the Small Magellanic Cloud
• Ages and Metallicities of Star Clusters and Surrounding Fields in the Outer Disk of the Large Magellanic Cloud
• The age-metallicity relationship of the Large Magellanic Cloud field star population from wide-field Washington photometry
• Three dimensional maps of the Magellanic Clouds using RR Lyrae Stars and Cepheids II. The Small Magellanic Cloud
• The VMC survey - XXVI. Structure of the Small Magellanic Cloud from RR Lyrae stars
• Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. I. Abundances and Velocities for a Sample of Clusters
• The Stellar Populations in the Outer Regions of M33. I. Metallicity Distribution Function
• An estimate of the structural parameters of the Large Magellanic Cloud using red clump stars
• Red Giants in the Small Magellanic Cloud. I. Disk and Tidal Stream Kinematics
• Red Giants in the Small Magellanic Cloud. II. Metallicity Gradient and Age-Metallicity Relation
• Ca II Triplet Spectroscopy of Small Magellanic Cloud Red Giants. III. Abundances and Velocities for a Sample of 14 Clusters
• The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud
• Distances to Populous Clusters in the LMC via the K-Band Luminosity of the Red Clump
• Properties of RR Lyrae stars in the inner regions of the Large Magellanic Cloud. II. The extended sample
• Chemical evolution of the Small Magellanic Cloud based on planetary nebulae
• Tagging the Chemical Evolution History of the Large Magellanic Cloud Disk
• The Connection between Star Formation and Metallicity Evolution in Barred Spiral Galaxies
• Formation of the Small Magellanic Cloud: ancient major merger as a solution to the kinematical differences between old stars and HI gas
• Morphology and metallicity of the Small Magellanic Cloud using RRab stars
• RR Lyrae variables in the Small Magellanic Cloud - II. The extended area: chemical and structural analysis
• The stellar populations of spiral disks.II Measuring and modeling the radial distribution of absorption spectral indices
• From K giants to G dwarfs: stellar lifetime effects on metallicity distributions derived from red giants

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