Exploratory Observations of a New Bright Quasar

Details Exploratory Observations of a New Bright Quasar Exploratory Observations of a New Bright Quasar

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9181l&link_type=abstract

HST Proposal ID #9181

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Hst Proposal Id #9181 Agn/Quasars

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The VLA FIRST radio survey recently discovered a new, extremely bright quasar that is the second brightest optical object in the sky at z > 0.1. Optically classified as a Narrow-line Seyfert 1 galaxy {NLS1}, PHL 1811 is not typical of this class of objects because it is a very weak X-ray source. We propose short exploratory UV spectroscopic observations of this new bright quasar that will reveal its true nature and permit us to identify potential applications of future deeper observations. PHL 1811 may be the brightest luminous NLS1, in which case the study of the profiles and ratios of the emission lines will be valuable. Alternatively, PHL 1811 may be the brightest BALQSO, and the structure and composition of the BAL flow may be studied. PHL 1811 may be a useful probe for local LyAlpha absorption and follow-up high resolution spectroscopy will be indicated; furthermore, the proposed HST STIS observation will support the FUSE observation scheduled for this fall. We also request short Chandra observations to identify the origin of the faint X-ray emission.

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