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Title:
QSOs with PHL 5200-like broad absorption line profiles
Authors:
Turnshek, David A.; Grillmair, Carl J.; Foltz, Craig B.; Weymann, Ray J.
Affiliation:
AA(Space Telescope Science Institute, Baltimore, MD), AB(Space Telescope Science Institute, Baltimore, MD), AC(Multiple Mirror Telescope Observatory, Tucson, AZ), AD(Mount Wilson and Las Campanas Observatoires, Pasadena, CA)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. 651-670. (ApJ Homepage)
Publication Date:
02/1988
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Absorption Spectra, Astronomical Spectroscopy, Line Spectra, Quasars, High Resolution, Lyman Alpha Radiation, Spectral Resolution, Spectrum Analysis
DOI:
10.1086/166036
Bibliographic Code:
1988ApJ...325..651T

Abstract

The first moderately high resolution observations of three broad absorption line (BAL) QSOs with PHL 5200-type profiles are presented. Relatively smooth absorption extends from the emission blueward out to wavelengths corresponding to as much as several tens of thousands of km/s. There is some structure in the absorption troughs of all the objects which may be due to the effects of radiation pressure. The Ly-alpha broad emission line region (BELR) is occulted by the QSO and must also be larger in extent along the line of sight than the Ly-alpha emitting region. The evidence for occultation of the regions creating the high-ionization BELs of C IV, Si IV, and N V by the BALR is discussed. It is concluded that the BALR occults all of the components of the BEL region in 1413 + 113. Limits on the BALR covering factor are discussed, and is is concluded that the BALR occults the N V BELR that the BAL flow is decelerating.

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