Associated Absorption Lines in the STIS Spectrum of the Radio-Loud Quasar 3C351

Details Associated Absorption Lines in the STIS Spectrum of the Radio-Loud Quasar 3C351 Associated Absorption Lines in the STIS Spectrum of the Radio-Loud Quasar 3C351

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.9906y&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #99.06; Bulletin of the American Astronomical Society, Vol. 33, p.1457

Astronomy and Astrophysics

Astronomy

Scientific paper

As one of the most luminous radio-loud quasars showing intrinsic ultraviolet (UV) and X-ray absorption, 3C351 provides a perfect environment for studying the kinematics and physical conditions of the ionized absorbers. In this poster we present the intrinsic absorption lines in the high-resolution ( ~ 3.5 km s-1) far-UV spectrum which is acquired by coadding the observations from 1999 June to 2000 July with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST). The spectrum covers a wavelength region from 1150 Å to 1710 Å, and shows strong broad (up to ~ 21,000 km s-1) and narrow ( ~ 3,000 km s-1) emissions from the O 6 doublet and Lyα . The associated absorption lines are present on the blue wings of the high-ionization emission doublets O 6 λ λ 1032,1038 and N 5 λ λ 1238,1242, as well as the Lyman lines through Lyɛ . These intrinsic absorptions are resolved into several distinct kinematic components, spanning a rest-frame velocity range from -50 to -3800 km s-1, with respect to the systemic redshift of zem=0.3721. The majority of the intrinsic absorption line regions are found to have partial coverage of the background continuum source and the broad emission line region (BELR). The relationships between the far-UV absorbers and X-ray `warm' absorbers are studied with the assistance of photoionization models. We find that most of the UV associated absorption components have low values of ionization parameters and effective hydrogen column densities, inconsistent with the previous claim that the X-ray and UV absorption arises in the same material.

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