Journal article
MULTI-WAVELENGTH LENS RECONSTRUCTION OF A PLANCK AND HERSCHEL-DETECTED STAR-BURSTING GALAXY
The Astrophysical journal, Vol.829(1), 21
09/16/2016
DOI: 10.3847/0004-637X/829/1/21
Abstract
We present a source-plane reconstruction of a Herschel and Planck-detected gravitationally lensed dusty star-forming galaxy (DSFG) at z = 1.68 using Hubble, Submillimeter Array (SMA), and Keck observations. The background submillimeter galaxy (SMG) is strongly lensed by a foreground galaxy cluster at z = 0.997 and appears as an arc with a length of ∼15″ in the optical images. The continuum dust emission, as seen by SMA, is limited to a single knot within this arc. We present a lens model with source-plane reconstructions at several wavelengths to show the difference in magnification between the stars and dust, and highlight the importance of multi-wavelength lens models for studies involving lensed DSFGs. We estimate the physical properties of the galaxy by fitting the flux densities to model spectral energy distributions leading to a magnification-corrected star-formation rate (SFR) of 390 60 M yr−1 and a stellar mass of . These values are consistent with high-redshift massive galaxies that have formed most of their stars already. The estimated gas-to-baryon fraction, molecular gas surface density, and SFR surface density have values of 0.43 0.13, 350 200 pc−2, and M yr−1 kpc−2, respectively. The ratio of SFR surface density to molecular gas surface density puts this among the most star-forming systems, similar to other measured SMGs and local ULIRGs.
Details
- Title: Subtitle
- MULTI-WAVELENGTH LENS RECONSTRUCTION OF A PLANCK AND HERSCHEL-DETECTED STAR-BURSTING GALAXY
- Creators
- Nicholas Timmons - University of California Department of Physics and Astronomy, Irvine, CA 92697, USAAsantha Cooray - University of California, IrvineDominik A Riechers - Ithaca CollegeHooshang Nayyeri - University of California Department of Physics and Astronomy, Irvine, CA 92697, USAHai Fu - University of IowaEric Jullo - Laboratoire d’Astrophysique de MarseilleMichael D Gladders - University of ChicagoMaarten Baes - Sterrenkundig ObservatoriumR. Shane Bussmann - Cornell UniversityJae Calanog - San Diego Miramar CollegeDavid L Clements - Physics Department , Blackett Lab, Imperial College, Prince Consort Road, London SW7 2AZ, UKElisabete da Cunha - Swinburne University of TechnologySimon Dye - University of NottinghamStephen A Eales - Cardiff UniversityCristina Furlanetto - CAPES Foundation, Ministry of Education of Brazil, Brasília/DF, 70040-020, BrazilJoaquin Gonzalez-Nuevo - Universidad de Oviedo Departamento de F sica, C. Calvo Sotelo s/n, E-33007 Oviedo, SpainJoshua Greenslade - Physics Department , Blackett Lab, Imperial College, Prince Consort Road, London SW7 2AZ, UKMark Gurwell - Center for Astrophysics Harvard & SmithsonianHugo Messias - Instituto de Astrofísica e Ciências do Espaço, Universidade de Lisboa, OAL, Tapada da Ajuda, PT 1349-018 Lisboa, PortugalMichal J Michalowski - Royal ObservatoryIván Oteo - European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, GermanyIsmael Pérez-Fournon - Universidad de La Laguna Departimento de Astrofísica, E-38206, La Laguna, Tenerife, SpainDouglas Scott - University of British ColumbiaElisabetta Valiante - Cardiff University
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.829(1), 21
- DOI
- 10.3847/0004-637X/829/1/21
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- Institute of Physics (IOP)
- Number of pages
- 11
- Language
- English
- Date published
- 09/16/2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199664002771
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