SIMBAD references

2017ApJ...843L..22D - Astrophys. J., 843, L22-L22 (2017/July-2)

Discovery of a lensed ultrabright submillimeter galaxy at z = 2.0439.

DIAZ-SANCHEZ A., IGLESIAS-GROTH S., REBOLO R. and DANNERBAUER H.

Abstract (from CDS):

We report an ultrabright lensed submillimeter galaxy (SMG) at z = 2.0439, WISE J132934.18+224327.3, identified as a result of a full-sky cross-correlation of the AllWISE and Planck compact source catalogs aimed to search for bright analogs of the SMG SMM J2135, the Cosmic Eyelash. Inspection of archival SCUBA-2 observations of the candidates revealed a source with fluxes (S_850µm_=130 mJy) consistent with the Planck measurements. The centroid of the SCUBA-2 source coincides within 1 arcsec with the position of the AllWISE mid-IR source, and, remarkably, with an arc-shaped lensed galaxy in HST images at visible wavelengths. Low-resolution rest-frame UV-optical spectroscopy of this lensed galaxy obtained with 10.4 m GTC reveals the typical absorption lines of a starburst galaxy. Gemini-N near-IR spectroscopy provided a clear detection of Hα emission. The lensed source appears to be gravitationally magnified by a massive foreground galaxy cluster lens at z = 0.44; modeling with Lenstool indicates a lensing amplification factor of 11 ± 2. We determine an intrinsic rest-frame 8-1000 µm luminosity, LIR, of (1.3±0.1)×1013 L, and a likely star formation rate (SFR) of ∼500–2000 M yr–1. The SED shows a remarkable similarity with the Cosmic Eyelash from optical-mid/IR to submillimeter/radio, albeit at higher fluxes.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: high-redshift - galaxies: starburst - gravitational lensing: strong - infrared: galaxies - submillimeter: galaxies - submillimeter: galaxies

Simbad objects: 4

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