Physics
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6350a&link_type=abstract
HST Proposal ID #6350
Physics
Hst Proposal Id #6350 Qso Absorption Lines
Scientific paper
About 10% of all quasars show broad absorption lines {BALs} associated with resonance lines from abundant ions. The ability to observe the UV part of BALQSOs spectra is crucial for improving our knowledge of these objects. Using one of the FOC's prisms we can obtain important information about the slope of the UV continuum in BALQSOs even in the snapshot mode. Our objectives are: {a} Check whether the UV continuum of objects that show a Ly ``ghost'' signature in their BALs, is steeply declining in the UV, and whether the opposite is also true. This is a crucial test for verifying whether radiative acceleration is the dominant acceleration mechanism in BAL outflows. {b} Check whether the UV continuum of Mg II BALQSOs shows a thick H I absorption edge at 912Angstrom rest wavelength. This feature is predicted by an ionization model created to explain the existence of Mg II BALs. {c} Observe the UV continuum of several high redshift BALQSOs in order to decide if their flux level are appropriate for future deep UV spectroscopy using the FOS {or the STIS after its installment}. {d} Make the same observation on a significant sample of BALQSOs in order to shed light on their ionization equilibrium, and to obtain statistical information for a non- biased sample.
No associations
LandOfFree
FOC Spectroscopy of BALQSOs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with FOC Spectroscopy of BALQSOs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FOC Spectroscopy of BALQSOs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1117536