Other
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5621t&link_type=abstract
HST Proposal ID #5621
Other
Hst Proposal Id #5621 Quasars &Amp, Agn Gravitational Lenses
Scientific paper
Observations of the gravitationally lensed "Cloverleaf" Broad Absorption Line (BAL) QSO Q1413+117 are a follow-on to a Cycle 1 proposal. Red and blue WFPC2 images and FOS spectra will be taken to achieve the following aims: (1) The red WFPC2 PC images, taken earlier in 1994, were used as EARLY ACQs and searched for other component images and the lensing galaxy. Note that the lensing was not discovered and so must be fainter than models suggest. (2) FOS data on the QSO image components will be used to check sight-line dependent differences in BAL profiles. The results can be used to place constraints on BAL region cloud sizes and shapes. WFPC2 Red (f814w) and blue(f336w) images will replace (11/94) the FOS galaxy spectrum in grating 650L. These images will yield sight-line dependent differences in dust extinction.
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