The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- III. The Large Magellanic Cloud

Abstract

We present a map of the total intrinsic reddening across ~90 deg${}^2$ of the Large Magellanic Cloud (LMC) derived using optical (ugriz) and near-infrared (IR; YJKs) spectral energy distributions (SEDs) of background galaxies. The reddening map is created from a sample of 222,752 early-type galaxies based on the LEPHARE ${\chi }^2$ minimisation SED-fitting routine. We find excellent agreement between the regions of enhanced intrinsic reddening across the central (4x4 deg${}^2$) region of the LMC and the morphology of the low-level pervasive dust emission as traced by far-IR emission. In addition, we are able to distinguish smaller, isolated enhancements that are coincident with known star-forming regions and the clustering of young stars observed in morphology maps. The level of reddening associated with the molecular ridge south of 30 Doradus is, however, smaller than in the literature reddening maps. The reduced number of galaxies detected in this region, due to high extinction and crowding, may bias our results towards lower reddening values. Our map is consistent with maps derived from red clump stars and from the analysis of the star formation history across the LMC. This study represents one of the first large-scale categorisations of extragalactic sources behind the LMC and as such we provide the LEPHARE outputs for our full sample of ~2.5 million sources.

18 pages, 16 figures, accepted for publication in MNRAS

References in corpus (29)

• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• A Unified Representation of Gas-Phase Element Depletions in the Interstellar Medium
• Calibration of the Tip of the Red Giant Branch (TRGB)
• Photometric redshift and classification for the XMM-COSMOS sources
• The Radio-Loud Fraction of Quasars is a Strong Function of Redshift and Optical Luminosity
• The VISTA Science Archive
• Clustering of Local Group distances: publication bias or correlated measurements? I. The Large Magellanic Cloud
• New Optical Reddening Maps of the Large and Small Magellanic Clouds
• Dust and Gas in the Magellanic Clouds from the HERITAGE Herschel Key Project. I. Dust Properties and Insights into the Origin of the Submm Excess Emission
• The VISTA ZYJHKs Photometric System: Calibration from 2MASS
• OGLE-ing the Magellanic System: Optical Reddening Maps of the Large and Small Magellanic Cloud from Red Clump Stars
• Clustering of Local Group distances: publication bias or correlated measurements? III. The Small Magellanic Cloud
• The VMC Survey. XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids
• The VMC survey - XXVI. Structure of the Small Magellanic Cloud from RR Lyrae stars
• Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
• The panchromatic view of the Magellanic Clouds from Classical Cepheids. I. Distance, Reddening and Geometry of the Large Magellanic Cloud disk
• The VMC survey -- XLIII. The spatially resolved star formation history across the Large Magellanic Cloud
• Empirical calibration of the reddening maps in the Magellanic Clouds
• The Resolved Distributions of Dust Mass and Temperature in Local Group Galaxies
• The VMC Survey -- XLII. Near-infrared period-luminosity relations for RR Lyrae stars and the structure of the Large Magellanic Cloud
• The VMC Survey -- XL. Three-dimensional structure of the Small Magellanic Cloud as derived from red clump stars
• The ASKAP-EMU Early Science Project: 888 MHz Radio Continuum Survey of the Large Magellanic Cloud
• Resolving the Dust-to-Metals Ratio and CO-to-H${}_2$ Conversion Factor in the Nearby Universe
• Dust distributions in the Magellanic Clouds
• The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- II. The Small Magellanic Cloud
• 4MOST Consortium Survey 9: One Thousand and One Magellanic Fields (1001MC)
• Identification confusion and blending concealment in the SDSS-DR16 Quasar catalogues -- 40 new quasars and 82 false quasars identified
• Extinction in the Large Magellanic Cloud Bar around NGC1854, NGC1856, and NGC1858
• The VMC survey -- XLVI. Stellar proper motions in the centre of the Large Magellanic Cloud