Astronomy and Astrophysics – Astronomy
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.8701k&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #87.01; Bulletin of the American Astronomical Society, Vol. 31, p.978
Astronomy and Astrophysics
Astronomy
Scientific paper
We report results from deep NICMOS imaging of the field of a damped Lyman-alpha (DLA) quasar absorber at z=1.89. This is one of the three high-z DLA fields that we have observed with NICMOS as part of our GTO observing programs. The images were obtained in the broad filter F160W and the narrow filter F190N with camera 2 on NICMOS, with the goal of detecting the rest-frame optical continuum and H-alpha line emission from the DLA absorber. Some of the broad-band images were obtained with the NICMOS coronagraph. We describe the reduction of the images and subtraction of the quasar point spread function. The resultant broad-band images put sensitive constraints on the size of the DLA absorber, while the narrow-band images put tight limits on the star formation rate in the absorber. These results have important implications for the physical nature of DLA galaxies and for their dust content. Finally, our images also offer very sensitive constraints on the properties of the quasar host galaxy.
Hill James M.
Jannuzi Buell
Kulkarni Varsha P.
Rieke Marcia J.
Schneider Gerardo
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