Detection of an ultra-bright submillimeter galaxy behind the Small Magellanic Cloud
arXiv:1308.6375 · doi:10.1088/2041-8205/774/2/L30
Abstract
We report the discovery of a new ultra-bright submillimeter galaxy (SMG) behind the Small Magellanic Cloud (SMC). This SMG is detected as a 43.3+-8.4 mJy point source (MM J01071-7302, hereafter MMJ0107) in the 1.1 mm continuum survey of the SMC by AzTEC on the ASTE telescope. MMJ0107 is also detected in the radio (843 MHz), Herschel/SPIRE, Spitzer MIPS 24 μm, all IRAC bands, Wide-field Infrared Survey Explorer, and near-infrared (J, H, KS). We find an optical (U, B, V) source, which might be the lensing object, at a distance of 1.4 arcsec from near-infrared and IRAC sources. Photometric redshift estimates for the SMG using representative spectral energy distribution templates show the redshifts of 1.4-3.9. We estimate total far-infrared luminosity of (0.3-2.2)x10^14 μ^-1 L_sun and a star formation rate of 5600-39, 000 μ^-1 M_sun yr^-1, where μ is the gravitational magnification factor. This apparent extreme star formation activity is likely explained by a highly magnified gravitational lens system.
14 pages, 2 figures, published in ApJ Letters
References in corpus (15)
- The Detection of a Population of Submillimeter-Bright, Strongly-Lensed Galaxies
- Intense Star Formation within Resolved Compact Regions in a Galaxy at z=2.3
- Surveying the Agents of Galaxy Evolution in the Tidally-Stripped, Low Metallicity Small Magellanic Cloud (SAGE-SMC). I. Overview
- AzTEC Millimetre Survey of the COSMOS Field: I. Data Reduction and Source Catalogue
- The Spitzer Survey of the Small Magellanic Cloud: FIR Emission and Cold Gas in the SMC
- HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths
- The AzTEC mm-Wavelength Camera
- AzTEC millimeter survey of the COSMOS field - III. Source catalog over 0.72 sq. deg. and plausible boosting by large-scale structure
- An AzTEC 1.1 mm Survey of the GOODS-N Field I: Maps, Catalogue, and Source Statistics
- Spatial correlation between submillimetre and Lyman-alpha galaxies in the SSA 22 protocluster
- The source counts of submillimetre galaxies detected at 1.1 mm
- Submillimeter Observations of Millimeter Bright Galaxies Discovered by the South Pole Telescope
- The Sloan Lens ACS Survey. XI. Beyond Hubble resolution: size, luminosity and stellar mass of compact lensed galaxies at intermediate redshift
- Optical Properties of High-Frequency Radio Sources from the Australia Telescope 20 GHz (AT20G) Survey
- Calculating the transfer function of noise removal by principal component analysis and application to AzTEC observations