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Title: DISCOVERY OF A QUADRUPLE LENS IN CANDELS WITH A RECORD LENS REDSHIFT z = 1.53

Using spectroscopy from the Large Binocular Telescope and imaging from the Hubble Space Telescope we discovered the first strong galaxy lens at z {sub lens} > 1. The lens has a secure photometric redshift of z = 1.53 ± 0.09 and the source is spectroscopically confirmed at z = 3.417. The Einstein radius (0.''35; 3.0 kpc) encloses 7.6 × 10{sup 10} M {sub ☉}, with an upper limit on the dark matter fraction of 60%. The highly magnified (40×) source galaxy has a very small stellar mass (∼10{sup 8} M {sub ☉}) and shows an extremely strong [O III]{sub 5007Å} emission line (EW{sub 0} ∼ 1000 Å) bolstering the evidence that intense starbursts among very low-mass galaxies are common at high redshift.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ; ;  [4] ; ; ;  [5] ;  [6]
  1. Max-Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany)
  2. INAF - Osservatorio Astronomico di Roma, via Frascati 33, I-00040 Monteporzio (Italy)
  3. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States)
  4. UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)
  5. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
  6. Department of Physics and Astronomy, University of Kentucky, 505 Rose Street, Lexington, KY 40506 (United States)
Publication Date:
OSTI Identifier:
22215388
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 777; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; EMISSION; GALAXIES; GRAVITATIONAL LENSES; MASS; NONLUMINOUS MATTER; RED SHIFT; SPACE; SPECTROSCOPY; TELESCOPES