The Einstein ring GAL-CLUS-022058s: a Lensed Ultrabright Submillimeter Galaxy at z=1.4796

Abstract

We report an ultra-bright lensed submillimeter galaxy at $z_{spec}=1.4796$, identified as a result of a full-sky cross-correlation of the AllWISE and Planck compact source catalogs aimed to search for bright submillimeter galaxies at $z\sim 1.5-2.8$. APEX/LABOCA observations of the candidate galaxy reveal a source with flux (S${}_{870\mu m}=54\pm 8$ mJy). The position of the APEX source coincides with the position of the AllWISE mid-IR source, and with the Einstein ring GAL-CLUS-022058s, observed with the HST. Archival VLT/FORS observations reveal the redshift of this Einstein ring, $z_{spec}=1.4796$, and detection of the CO(5-4) line at $z_{spec}=1.4802$ with APEX/nFLASH230 confirms the redshift of the submillimeter emission. The lensed source appears to be gravitationally magnified by a massive foreground galaxy cluster lens at $z=0.36$. We use Lenstool to model the gravitational lensing, which is near to a "fold arc" configuration for an elliptical mass distribution of the central halo, where four images of the lensed galaxy are seen; the mean magnification is ${\mu }_{\mathrm{L}}=18\pm 4$. We have determined an intrinsic rest-frame infrared luminosity of $L_{IR}\approx 10^{12}{L}_{\odot }$ and a likely star formation rate of $\sim 70-170$ $M_{\odot }y{r}^{-1}$. The molecular gas mass is $M_{mol}\sim 2.6\times 10^{10}{M}_{\odot }$ and the gas fraction is $f=0.34\pm 0.07$. We also obtain a stellar mass log$(M_{\ast }/M_{\odot })=10.7\pm 0.1$ and a specific star formation rate log$(sSFR/Gy{r}^{-1})=0.15\pm 0.03$. This galaxy lies on the so-called main sequence of star-forming galaxies at this redshift.

References in corpus (48)

• Planck 2015 results. XIII. Cosmological parameters
• The Global Schmidt Law in Star Forming Galaxies
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• A Redshift Survey of the Submillimeter Galaxy Population
• Cool Gas in High Redshift Galaxies
• Molecular Gas at High Redshift
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• Infrared luminosity functions from the Chandra Deep Field South : the Spitzer view on the history of dusty star formation at 0<z<1
• Dusty Star-Forming Galaxies at High Redshift
• A Bayesian approach to strong lensing modelling of galaxy clusters
• ISM masses and the star formation law at Z = 1 to 6 // ALMA observations of dust continuum in 145 galaxies in the COSMOS survey field
• An interferometric CO survey of luminous submm galaxies
• A survey of molecular gas in luminous sub-millimetre galaxies
• 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
• Regularity underlying complexity: a redshift-independent description of the continuous variation of galaxy-scale molecular gas properties in the mass-star formation rate plane
• ALMA redshifts of millimeter-selected galaxies from the SPT survey: The redshift distribution of dusty star-forming galaxies
• The Large APEX Bolometer Camera LABOCA
• An ALMA survey of the SCUBA-2 CLS UDS field: Physical properties of 707 Sub-millimetre Galaxies
• Cluster Lenses
• Herschel-ATLAS: a binary HyLIRG pinpointing a cluster of starbursting proto-ellipticals
• Constraining the mass distribution of galaxies using galaxy-galaxy lensing in clusters and in the field
• Dust temperature and CO-to-H2 conversion factor variations in the SFR-M* plane
• Toward Unbiased Galaxy Cluster Masses from Line of Sight Velocity Dispersions
• An ALMA survey of submillimetre galaxies in the Extended Chandra Deep Field South: Spectroscopic redshifts
• Testing the Low-Mass End of X-Ray Scaling Relations with a Sample of Chandra Galaxy Groups
• The nature of giant clumps in distant galaxies probed by the anatomy of the Cosmic Snake
• Revealing the complex nature of the strong gravitationally lensed system H-ATLAS J090311.6+003906 using ALMA
• Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5
• Molecular clouds in the Cosmic Snake normal star-forming galaxy 8 billion years ago
• SEPIA - a new single pixel receiver at the APEX Telescope
• The ROSAT All-Sky Survey: a Catalog of Clusters of Galaxies in a Region of 1 Ster around the South Galactic Pole
• Chandra ACIS Survey of X-ray Point Sources: The Source Catalog
• Properties of mm galaxies: Constraints from K-band blank fields
• Strong Lens Models for 37 Clusters of Galaxies from the SDSS Giant Arcs Survey
• The REFLEX galaxy cluster survey. VIII. Spectroscopic observations and optical atlas
• Giant star-forming clumps?
• Ultra-bright CO and [CI] emission in a lensed z=2.04 submillimeter galaxy with extreme molecular gas properties
• PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel
• Early Science with the Large Millimeter Telescope: Constraining the Gas Fraction of a Compact Quiescent Galaxy at z=1.883
• HerMES: A Statistical Measurement of the Redshift Distribution of Herschel-SPIRE Sources Using the Cross-correlation Technique
• ALMA 1.3 mm Survey of Lensed Submillimeter Galaxies (SMGs) Selected by Herschel: Discovery of Spatially Extended SMGs and Implications
• Discovery of a lensed ultrabright submillimeter galaxy at z=2.0439
• Rest-frame UV and optical emission line diagnostics of ionised gas properties: a test case in a star-forming knot of a lensed galaxy at z~1.7
• Mass Calibration of the CODEX Cluster Sample using SPIDERS Spectroscopy -- II. The X-ray Luminosity-Mass Relation
• A low mass cluster of extremely red galaxies at z=1.10 in the GOODS Southern Field
• A near/mid infrared search for ultra-bright submillimetre galaxies: Searching for Cosmic Eyelash Analogues

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• Interlopers speak out: studying the dark universe using small-scale lensing anisotropies
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• Millimeter-wave observations of Euclid Deep Field South using the South Pole Telescope: A data release of temperature maps and catalogs
• Hamilton's Object Revisited: A challenging source redshift of a strong lensing configuration