CLASS B0739+366: A New Two-Image Gravitational Lens System | Zendy

D. R. Marlow | Zendy; D. Rusin | Zendy; M. Norbury | Zendy; N. Jackson | Zendy; I. W. A. Browne | Zendy; P. N. Wilkinson | Zendy; C. D. Fassnacht | Zendy; S. T. Myers | Zendy; L. V. E. Koopmans | Zendy; R. D. Blandford | Zendy; T. J. Pearson | Zendy; A. C. S. Readhead | Zendy; A. G. de Bruyn | Zendy

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CLASS B0739+366: A New Two-Image Gravitational Lens System

Author(s) -

D. R. Marlow,

D. Rusin,

M. Norbury,

N. Jackson,

I. W. A. Browne,

P. N. Wilkinson,

C. D. Fassnacht,

S. T. Myers,

L. V. E. Koopmans,

R. D. Blandford,

T. J. Pearson,

A. C. S. Readhead,

A. G. de Bruyn

Publication year - 2001

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/318735

Subject(s) - physics , gravitational lens , astrophysics , galaxy , redshift , lens (geology) , hubble's law , astronomy , telescope , sky , strong gravitational lensing , very long baseline array , quasar , radio galaxy , optics

We present the discovery of CLASS B0739+366, a new gravitational lens systemfrom the Cosmic Lens All-Sky Survey. Radio imaging of the source with the VeryLarge Array (VLA) shows two compact components separated by $0\farcs54$, with aflux density ratio of $\sim$ 6:1. High-resolution follow-up observations usingthe Very Long Baseline Array (VLBA) at 1.7 GHz detect weak, parity-reversed jetemission from each of the radio components. Hubble Space Telescope NICMOS F160Wobservations detect infrared counterparts to the lensed images, as well as anextended object between them which we identify as the lensing galaxy. Redshiftsfor the galaxy and lensed source have not yet been obtained. For typical lensand source redshifts of $z=0.5$ and $z=1.5$, respectively, preliminary massmodeling predicts a time delay of $\sim7h^{-1}$ days in a flat $\Omega_{M}=1.0$universe. The small predicted time delay and weak radio components will makeCLASS B0739+366 a challenging target for Hubble constant determination.Comment: 15 pages, including 6 figures, to be published in A

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