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To be published in:
Proceedings of the ASP conference "Highly redshifted Radio Lines" Greenbank, WV.

BIMA and Keck Imaging of the Radio Ring PKS 1830-211+

B. L. Frye 1, F. Courbin2,3, T. J. Broadhurst1, W. J. W. Welch1, C. Lidman4, P. Magain 2,*,
M. Pahre5 and S.G. Djorgovski5

1 Astronomy Department, University of California, Berkeley, CA 94720
2 Institut d'Astrophysique et de Géophysique - Université de Liège, Avenue de Cointe 5, 4000 Liège, Belgium
3 URA 173 CNRS-DAEC, Observatoire de Paris, F-92195 Meudon Principal cedex, France
4 European Southern Observatory, Casilla 19001, Santiago 19, Chile
5 Palomar Observatory, California Institute of Technology, Pasadena, CA 91125, USA

* Maître de Recherches FNRS, Belgium

+ Based on observations obtained at ESO La Silla Observatory, Chile and at the W. M. Keck Observatory, Hawaii, which is operated jointly by the California Institute of Technology and the University of California.


     We discuss BIMA (Berkeley Illinois Maryland Association) data and present new high quality optical and near-IR Keck images of the bright radio ring PKS 1830-211. Applying a powerful new deconvolution algorithm we have been able to identify both images of the radio source. In addition we recover an extended source in the optical, consistent with the expected location of the lensing galaxy. The source counterparts are very red, I-K × 7 suggesting strong Galactic absorption with additional absorption by the lensing galaxy at z=0.885, and consistent with the detection of high redshift molecules in the lens.

Key Words
cosmology: observations, gravitational lensing -- quasars: individual: PKS 1830-211 -- infrared: general -- technique: image processing methods: data analysis.

See also the more detailed preprint "

Article: (26450 bytes): HTTP FTP (
Figures: pks1830f1.eps.gz (50245 bytes): HTTP FTP
pks1830f2.eps.gz (6935 bytes): HTTP FTP
pks1830f3.eps.gz (15708 bytes): HTTP FTP

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