Absorption-Line Systems and Galaxies in Front of the Second Brightest Quasar, PHL 1811

Abstract

The extraordinarily bright quasar PHL 1811 at a redshift z = 0.192 provides an attractive opportunity to use ultraviolet absorption-line spectroscopy to study the properties of gas systems in the local universe. An R = 20,000 far-UV spectrum recorded by FUSE revealed 7 extragalactic absorption systems, one of which is a Lyman limit system at z = 0.08093 accompanied by three systems having redshifts which differ from it by less than 0.008. The abundance of O with respect to Fe in the Lyman limit system is not much different from the solar abundance ratio. Supplementary low resolution spectra recorded by STIS (on HST) at longer wavelengths helped to substantiate our identifications of systems in the FUSE spectrum and suggested the presence of an additional 4 systems that could be detected only through their Ly-alpha features. Spectroscopy at visible wavelengths of 7 galaxies within approximately 2' of PHL 1811 indicated that 2 of them are near the redshift of the quasar and 4 have redshifts within 850 km/s of the extragalactic absorption systems. The Lyman limit system is likely associated with an L* galaxy lying 23" from the sightline. Finally, in addition to prominent features at very low velocities arising from the disk of our Galaxy, the strong resonance transitions of C II and Mg II show evidence for material at v = -200 km/s; the column densities of these two species suggest that 17.7 < log N(H I) < 18.1 if the material has a solar composition.

arXiv comment47 pages, 5 figures, to appear in the June 2003 issue of the Astronomical Journal

References in corpus (29)

• The 'Forbidden' Abundance of Oxygen in the Sun
• Overview of the Far Ultraviolet Spectroscopic Explorer Mission
• Highly-Ionized High-Velocity Gas in the Vicinity of the Galaxy
• On-Orbit Performance of the Far Ultraviolet Spectroscopic Explorer (FUSE) Satellite
• The Low Redshift Lyman Alpha Forest in Cold Dark Matter Cosmologies
• A Reappraisal of the Solar Photospheric C/O Ratio
• Distances and Metallicities of High- and Intermediate-Velocity Clouds
• H I, H II, and R-Band Observations of a Galactic Merger Sequence
• The Deuterium to Hydrogen Abundance Ratio Towards a Fourth QSO: HS0105+1619
• The Luminosity Function of Galaxies in the Las Campanas Redshift Survey
• Intervening O VI Quasar Absorption Systems at Low Redshift: A Significant Baryon Reservoir
• Distribution and Kinematics of O VI in the Galactic Halo
• The Kinematic Connection Between QSO-Absorbing Gas and Galaxies at Intermediate Redshift
• A New Measurement of the Primordial Abundance of Deuterium: Toward Convergence with the Baryon Density from the CMB?
• The Population of Weak Mg II Absorbers I. A Survey of 26 QSO HIRES/Keck Spectra
• Abundances of Deuterium, Oxygen, and Nitrogen in the Local Interstellar Medium: Overview of First Results from the Far Ultraviolet Spectroscopic Explorer Mission
• The Gaseous Extent of Galaxies and the Origin of Lya Absorption Systems. V. Optical and Near-Infrared Photometry of Lya-absorbing Galaxies at z < 1
• The Local Lyman-alpha Forest. II: Distribution of HI Absorbers, Doppler Widths, and Baryon Content
• Constraining Dark Halo Potentials with Tidal Tails
• The Ionization and Metallicity of the Intervening O VI Absorber at z = 0.1212 in the Spectrum of H1821+643
• The Kinematics of Intermediate Redshift Mg II Absorbers
• Highly Ionized High Velocity Clouds: Intergalactic Gas in the Local Group or Distant Gas in the Galactic Halo?
• Far Ultraviolet Spectroscopy of the Intergalactic and Interstellar Absorption Toward 3C 273
• The Kinematic Composition of MgII Absorbers
• Lyman-alpha absorption around nearby galaxies
• The Heavy Element Enrichment of Lyman alpha Clouds in the Virgo Supercluster
• Deuterium abundances
• Thermal Pressures in Neutral Clouds inside the Local Bubble, as Determined from C I Fine-Structure Excitations
• The First Observations of the Second Brightest Quasar

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• The Far Ultraviolet Spectroscopic Explorer Survey of OVI Absorption in the Disk of the Milky Way
• The Relationship Between Intergalactic HI/OVI and Nearby (z<0.017) Galaxies
• The Properties of Low Redshift Intergalactic O VI Absorbers Determined from High S/N Observations of 14 QSOs with the Cosmic Origins Spectrograph
• The Intrinsically X-ray Weak Quasar PHL 1811. II. Optical and UV Spectra and Analysis
• The Intrinsically X-ray Weak Quasar PHL 1811. I. X-ray Observations and Spectral Energy Distribution
• The O VII X-ray forest toward Markarian 421: Consistency between XMM-Newton and Chandra
• A Hubble Space Telescope Study of Lyman Limit Systems: Census and Evolution
• Characterizing the Circumgalactic Medium of Nearby Galaxies with HST/COS and HST/STIS Absorption-Line Spectroscopy: II. Methods and Models
• Highly Ionized High-Velocity Clouds: Hot Intergalactic Medium or Galactic Halo?
• The Low-z Intergalactic Medium. II. LyB, OVI, and CIII Forest
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• Absorption-Line Detections of $10^{5-6}$ K Gas in Spiral-Rich Groups of Galaxies
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• The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203
• High Metallicity, Photoionised Gas in Intergalactic Large-Scale Filaments
• COS-Weak: Probing the CGM using analogs of weak Mg II absorbers at z < 0.3
• A Survey of Analogs to Weak MgII Absorbers in the Present
• Cloud-by-cloud, multiphase, Bayesian modeling: Application to four weak, low ionization absorbers
• The Surprisingly Constant Strength of O VI Absorbers over Cosmic Time
• A Census of Quasar-Intrinsic Absorption in the Hubble Space Telescope Archive: Systems from High Resolution Echelle Spectra
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• The Kinematic Evolution of Strong MgII Absorbers
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• The z = 0.0777 C III Absorber Towards PHL 1811 as a Case Study of a Low Redshift Weak Metal Line Absorber
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