Spectrophotometry and Imaging of the Lensed, Clover Leaf Broad Absorption Line QSO 1413+117-PART II-Cyc 4 High-Imaging

Details Spectrophotometry and Imaging of the Lensed, Clover Leaf Broad Absorption Line QSO 1413+117-PART II-Cyc 4 High-Imaging Spectrophotometry and Imaging of the Lensed, Clover Leaf Broad Absorption Line QSO 1413+117-PART II-Cyc 4 High-Imaging

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5442t&link_type=abstract

HST Proposal ID #5442

Other

Hst Proposal Id #5442 Quasars &Amp, Agn Gravitational Lenses

Scientific paper

Observations of the gravitationally lensed "Cloverleaf" Broad Absorption Line (BAL) QSO Q1413+117 are proposed as a follow-on to a Cycle 1 proposal. Red and UV WFPC2 images and FOS spectra will be taken to achieve the following aims: (1) The red WFPC2 PC images will be used as an EARLY ACQ and to search for other component images and the lensing galaxy, followed by FOS observations to determine the galaxy's redshift. The information will be used to delineate and model the geometry of this unique gravitationally lensed BAL QSO. (2) FOS data on the QSO image components will be used to check sight-line dependent differences in the BAL profiles. The results can be used to place constraints on BAL region cloud sizes and shapes. (3) The same FOS observations will be used to constrain the sizes and shapes of Ly-alpha forest clouds and two intervening narrow absorption-line metal systems. (4) The UV and red images will be compared to search for possible sight-line dependent differences in dust-extinction. Thus, results from this study will yield relevant information on a number of different important astrophysical problems.

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