Gravitational Lensing Enhanced NICMOS Imagery of a Young, Rapidly Evolving Faint Blue Galaxy

Details Gravitational Lensing Enhanced NICMOS Imagery of a Young, Rapidly Evolving Faint Blue Galaxy Gravitational Lensing Enhanced NICMOS Imagery of a Young, Rapidly Evolving Faint Blue Galaxy

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7425t&link_type=abstract

HST Proposal ID #7425

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Hst Proposal Id #7425 Cosmology

Scientific paper

Previous WFPC2 observations of the gravitational lens system Cl0024+16 in which a faint blue galaxy is multipli-imaged by a foreground rich galaxy cluster have allowed the reconstruction of the source. It displays a spectacular ring like morphology with several bright knots and a dark center that strongly suggests vigorous star formation and rapid evolution. This proposal requests NICMOS H, J and K band images of the three brightest and most magnified of these arcs. These data will be used to reconstruct, by the same inverse lensing processing, the source's appearance at NIR wavelengths. The gravitational lensing boost provides us with more than 10 times more total flux and up to about ten times better spatial resolution than would otherwise be available for a typical member of the faint blue galaxy population. The resulting 3 band {2 color} NIR source image, in combination with WFPC2 data obtained previously {see figures}, will allow us to {1} search for any old stellar population in this apparently young and rapidly evolving object, {2} characterize the luminosity, color and morphology of any such old component of the galaxy, and {3} test the hypothesis that some regions of the source galaxy are heavily obscured by dust.

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