Preprint Logo P41 September
1999


To be published in:
the proceedings of the conference held in Boston 25-30 July, 1999: gravitational lensing: recent progress and future goals.

Deconvolving Spectra: Near-IR Spectroscopy of the Lens and Source in HE 1104-1805

F. Courbin1, C. Lidman2, G. Meylan3 and P.Magain4,


1 Universidad Católica de Chile, Departamento de Astronomia y Astrofisica, Vicuña Mackenna 4860, Casilla 306, Santiago 22, Chile.
2 European Southern Observatory, Casilla 19, Santiago, Chile.
3 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany.
4 Institut d'Astrophysique et de Géophysique - Université de Liège, Avenue de Cointe 5, B-4000 Liège, Belgium.


Abstract

     A new method for spatial deconvolution of spectra is applied to near-IR spectroscopy of the doubly imaged QSO HE 1104-1805. The spectra of the QSO images and of the lensing galaxy are extracted, free of any mutual light contamination. Evidence for continuum microlensing is seen in the QSO images while the featureless lens spectrum, combined with previous photometry, indicates 1.0 < zl < 1.3.

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