Emission Line Fluxes and Profiles of the QSO PG1211+143 Observed with the HST Faint Object Spectrograph

Details Emission Line Fluxes and Profiles of the QSO PG1211+143 Observed with the HST Faint Object Spectrograph Emission Line Fluxes and Profiles of the QSO PG1211+143 Observed with the HST Faint Object Spectrograph

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.0209r&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #02.09; Bulletin of the American Astronomical Society, Vol. 24, p.729

Astronomy and Astrophysics

Astronomy

Scientific paper

Ultraviolet spectra of the low redshift quasar PG1211+143 were obtained with the Faint Object Spectrograph (FOS) onboard the Hubble Space Telescope. Additional observations were made in the optical at Lick Observatory. The fluxes and profiles of a large number of emission lines are being analyzed to obtain information on the structure and kinematics of the broad line region (BLR). Line asymmetries, differences in line shape, and relative differences in the zero velocity of several lines indicate that the BLR in this QSO is inhomogenous and that radial motion combined with some form obscuration is most likely present. Moreover, line ratios as a function of velocity show that widely different physical conditions exist for low and high velocity gas. The photoionization model CLOUDY (kindly provided by Gary Ferland) is being used to investigate the density and ionization levels in the gas that produces the cores and wings of the emission lines. We have also fit the ultraviolet and optical continuum with accretion disk models to constrain the mass and accretion rate onto the alleged blackhole. This research is supported by NASA NAG 5--1630 and NAS 5--29293.

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