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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693418.0, MPI für Astronomie / Publikationen_mpia
Discovery of a quadruple lens in CANDELS with a record lens redshift z = 1.53
Authors:van der Wel, A.; van de Ven, G.; Maseda, M.; Rix, H. W.; Rudnick, G. H.; Grazian, A.; Finkelstein, S. L.; Koo, D. C.; Faber, S. M.; Ferguson, H. C.; Koekemoer, A. M.; Grogin, N. A.; Kocevski, D. D.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:The Astrophysical Journal Letters
Volume:777
Issue / Number:1
Start Page:id. L17 (5 pp)
Audience:Not Specified
Abstract / Description:Using spectroscopy from the Large Binocular Telescope and imaging from the Hubble Space Telescope we discovered the first strong galaxy lens at z 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 × 1010 M , with an upper limit on the dark matter fraction of 60%. The highly magnified (40×) source galaxy has a very small stellar mass (~108 M ) and shows an extremely strong [O III]5007 Å emission line (EW0 ~ 1000 Å) bolstering the evidence that intense starbursts among very low-mass galaxies are common at high redshift.
Free Keywords:gravitational lensing: strong
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X
URL:http://cdsads.u-strasbg.fr/abs/2013ApJ...777L..17V
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