ALMA OBSERVATIONS OF SPT-DISCOVERED, STRONGLY LENSED, DUSTY, STAR-FORMING GALAXIES
Hezaveh, YDDepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaMarrone, DPSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USAFassnacht, CDDepartment of Physics, University of California, One Shields Avenue, Davis, CA 95616, USASpilker, JSSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USAVieira, JDCalifornia Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USAAguirre, JEUniversity of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAAird, KAUniversity of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAManuel AravenaEuropean Southern Observatory, Karl-Schwarzschild Strasse, D-85748 Garching bei München, GermanyAshby, MLNHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USAMatthew BaylissDepartment of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138, USABenson, BAEnrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USABleem, LEDepartment of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAM. S. BothwellSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USAM. BrodwinDepartment of Physics and Astronomy, University of Missouri, 5110 Rockhill Road, Kansas City, MO 64110, USACarlstrom, JEDepartment of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAChang, CLArgonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL, USA 60439, USAChapman, SCDepartment of Physics and Atmospheric Science, Dalhousie University, Halifax, NS B3H 3J5 CanadaCrawford, TMDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USACrites, ATDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAC. De BreuckEuropean Southern Observatory, Karl-Schwarzschild Strasse, D-85748 Garching bei München, GermanyT. de HaanDepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaDobbs, MADepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaFomalont, EBNational Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USAGeorge, EMDepartment of Physics, University of California, Berkeley, CA 94720, USAGladders, MDDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAGonzalez, AHDepartment of Astronomy, University of Florida, Gainesville, FL 32611, USAGreve, TRDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UKHalverson, NWDepartment of Astrophysical and Planetary Sciences and Department of Physics, University of Colorado, Boulder, CO 80309, USAHigh, FWKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAHolder, GPDepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaHolzapfel, WLDepartment of Physics, University of California, Berkeley, CA 94720, USAS. HooverKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAHrubes, JDUniversity of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAK. HusbandInstitute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UKHunter, TRNational Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USAR. KeislerKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USALee, ATPhysics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USALeitch, EMKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAM. LuekerCalifornia Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USAD. Luong-VanUniversity of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAMatthew A. MalkanDepartment of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547, USAV. J. McIntyreAustralia Telescope National Facility, CSIRO, Epping, NSW 1710, AustraliaMcMahon, JJEnrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAJ. MehlDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAMenten, KMMax-Planck-Institut für Radioastronomie, Auf dem Hügel 69 D-53121 Bonn, GermanyMeyer, SSDepartment of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAMocanu, LMDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAMurphy, EJObservatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAT. NatoliDepartment of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAS. PadinCalifornia Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USAT. PlaggeKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAReichardt, CLDepartment of Physics, University of California, Berkeley, CA 94720, USAA. RestSpace Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USAJ. RuelDepartment of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138, USARuhl, JEPhysics Department, Center for Education and Research in Cosmology and Astrophysics, Case Western Reserve University, Cleveland, OH 44106, USAKeren SharonKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USASchaffer, KKLiberal Arts Department, School of the Art Institute of Chicago, 112 S Michigan Ave, Chicago, IL 60603, USAL. ShawDepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaE. ShirokoffCalifornia Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USAB. StalderHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USAZ. StaniszewskiPhysics Department, Center for Education and Research in Cosmology and Astrophysics, Case Western Reserve University, Cleveland, OH 44106, USAStark, AAHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USAK. T. StoryKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAK. VanderlindeDepartment of Physics, McGill University, 3600 Rue University, Montreal, Quebec H3A 2T8, CanadaWeiss, AMax-Planck-Institut für Radioastronomie, Auf dem Hügel 69 D-53121 Bonn, GermanyN. WelikalaInstitut d'Astrophysique Spatiale, Bâtiment 121, Université Paris-Sud XI & CNRS, F-91405 Orsay Cedex, FranceR. WilliamsonDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
2013en
ABI
Аннотация
We present Atacama Large Millimeter/submillimeter Array (ALMA) 860 micrometer imaging of four high-redshift (z=2.8-5.7) dusty sources that were detected using the South Pole Telescope (SPT) at 1.4 mm and are not seen in existing radio to far-infrared catalogs. At 1.5 arcsec resolution, the ALMA data reveal multiple images of each submillimeter source, separated by 1-3 arcsec, consistent with strong lensing by intervening galaxies visible in near-IR imaging of these sources. We describe a gravitational lens modeling procedure that operates on the measured visibilities and incorporates self-calibration-like antenna phase corrections as part of the model optimization, which we use to interpret the source structure. Lens models indicate that SPT0346-52, located at z=5.7, is one of the most luminous and intensely star-forming sources in the universe with a lensing corrected FIR luminosity of 3.7 X 10^13 L_sun and star formation surface density of 4200 M_sun yr^-1 kpc^-2. We find magnification factors of 5 to 22, with lens Einstein radii of 1.1-2.0 arcsec and Einstein enclosed masses of 1.6-7.2x10^11 M_sun. These observations confirm the lensing origin of these objects, allow us to measure the their intrinsic sizes and luminosities, and demonstrate the important role that ALMA will play in the interpretation of lensed submillimeter sources.
Перевод пока недоступен
Цитирования и источники
Цитирований: 2Использованных источников: 0