QSO Absorption Lines: Proceedings of the ESO Workshop Held at Garching, Germany, 21–24 November 1994

Front Matter....Pages I-XXIII
Front Matter....Pages 1-1
QSO Absorption Lines: Progress, Problems and Opportunities....Pages 3-10
Front Matter....Pages 11-11
Evolution of the Neutral Gas and Metal Content of Damped Lyman Alpha Systems....Pages 13-22
Consequences of Dust in Damped Lyman-Alpha Systems....Pages 23-34
Are Studies of Dust in Damped Lyman- α Systems Biased by Extinction ?....Pages 35-36
QSO Absorption by Nearby Galaxies....Pages 37-38
The Mass Spectrum of Giant Hydrogen Clouds Associated with Damped Ly α Absorbers....Pages 39-42
A Damped Ly α Survey at z < 1.65....Pages 43-46
High Redshift Lyman Limit and Damped Lyman-Alpha Absorbers....Pages 47-50
Moderate Resolution Studies of Damped Lyα Systems at High Redshift....Pages 51-52
Near-Infrared Hα Searches for Companion Galaxies to Damped Ly-α Systems at z > 2....Pages 53-54
Lyman α Emission from Galaxies at High Redshifts....Pages 55-58
Front Matter....Pages 59-59
Abundances and Nature of the Absorbers....Pages 61-70
The Chemical Evolution of Damped Lyman α Galaxies....Pages 71-80
Chemical Evolution of (Proto-) Galactic Disks and Metal Abundances of Damped Lyα Absorbers....Pages 81-84
Abundances and Ionization in Multiple-Component Absorbers....Pages 85-88
Element Abundances at High Redshifts: The N/O Ratio at Low Metallicity....Pages 89-94
Abundances in the Lyman—Alpha Clouds....Pages 95-100
Relative Metal Abundance Patterns in Two Damped Lyman—Alpha Systems....Pages 101-102
As Metal Poor as It Could Be: the Damped System at z =3.390 Towards QSO 0000-2619....Pages 103-104
Front Matter....Pages 105-105
Lessons Learned from UV Absorption Lines at z =0....Pages 107-118
Front Matter....Pages 105-105
Probing the Outer Galactic Halo with the GHRS....Pages 119-122
Detection of Highly Ionized Galactic HVCs Toward Markarian 509....Pages 123-124
Front Matter....Pages 125-125
The Subclasses of Metal-Rich Absorbers....Pages 127-136
Observational Constraints on the Nature of Low Redshift Ly α Absorbers....Pages 137-138
The Nature and Evolution of Absorption—Selected Galaxies....Pages 139-152
From Metal—Line Absorption Profiles to Halo Kinematics?....Pages 153-156
Keck HIRES Spectroscopy: Low-Redshift Mg II and Lyman α Systems....Pages 157-160
Mg II Absorption from Low-Redshift Galaxies....Pages 161-164
The Sizes of MgII Absorption Systems....Pages 165-168
Hunting for MgII Absorbers with Fabry-Perot Imaging....Pages 169-170
Intrinsic Interstellar Absorption in two Radio Galaxies at z=0.8....Pages 171-174
Molecular Absorption in the Millimeter Range....Pages 175-178
CO Emission at z = 0.437 Toward 3C 196....Pages 179-180
Automated Search for Absorption Systems in Low Resolution QSO Spectra....Pages 181-182
Quantitative Spectroscopy of HS 1700+6416 with the Hubble Space Telescope....Pages 183-192
Reanalysis of the LLS in QSO HS 1700+6416....Pages 193-194
Metal Line Absorptions Toward the QSO HS1700+6416....Pages 195-196
High Signal-to-Noise Echelle Spectroscopy of HS 1946+7658....Pages 197-198
Redshift Evolution of the Carbon Abundance in Galaxies....Pages 199-200
Recent Results on QSO Absorption Lines....Pages 201-202
Front Matter....Pages 125-125
Fine-Structure Doublets in QSO Spectra and Variability of the Fine-Structure Constant α ....Pages 203-204
Limits on Star Formation Rates in Four Quasar Metal-Line Absorbers....Pages 205-206
A Group of Galaxies at z=2.38....Pages 207-208
A Narrow-line Emission Galaxy at z=2.8 in the Field of Q0831+128....Pages 209-210
Front Matter....Pages 211-211
Broad Absorption Line Quasars: An Overview....Pages 213-222
The Covering Factors, Ionization Structure, and Chemical Composition of QSO Broad Absorption Line Region Gas....Pages 223-236
The Absorption Spectrum of Nuclear Gas in Q 0059-2735....Pages 237-240
The BAL QSO Theory....Pages 241-242
Evaporation Dominated Flows in BAL Regions of QSOs....Pages 243-244
Testing Unified X-ray — UV Absorber Models with NGC 5548....Pages 245-246
An Associated Absorption System in Front of a Peculiar QSO with z abs ~ z em ~ 2.7....Pages 247-248
X-ray Environment of 3CR Radio Sources....Pages 249-250
Front Matter....Pages 251-251
Observations of Lyman- α and Lyman-Limit Systems from the HST Quasar Absorption Line Key Project....Pages 253-262
The Gaseous Extent of Galaxies and the Origin of Ly α Absorption Systems....Pages 263-272
Are Low Redshift Ly- α Absorption Systems Associated with Galaxies ?....Pages 273-274
Gravitational Lenses and Quasar Absorption Lines....Pages 275-286
Galaxies Close to the Line of Sight to two z=1 Quasars — Implications for Galactic Halos and Gravitational Lensing....Pages 287-288
Ionization and Abundances of Intergalactic Gas....Pages 289-298
The Proximity Effect....Pages 299-310
The Proximity Effect on the Lyman α Forest Due to a Foreground QSO....Pages 311-312
Front Matter....Pages 251-251
Lyα Forest: Results and Prospects....Pages 313-320
Simulation Analysis of the Lyman—Alpha Forest....Pages 321-322
Evidence for Large, Quiescent Lyman-Alpha Clouds from HST UV Spectroscopy of the Quasar Pair Q0107-025A,B....Pages 323-326
The Absorption Spectra of Q1107+487 and Q1442+295....Pages 327-328
Common Ly α Absorption Toward the Quasar Pair Q1343+2640A,B....Pages 329-330
The Ly α Forest towards HS1700+6416 at High Resolution....Pages 331-332
High-Resolution Spectroscopy of the Bright Quasar HS 1946+7658....Pages 333-334
Front Matter....Pages 335-335
The Spatial Correlation of Ly- α Clouds....Pages 337-342
Small-Scale Clustering in a Column-Density-Limited Sample of the Lyman-alpha Forest....Pages 343-346
Discovery of a Ly α Cloud in a Cosmic Void....Pages 347-350
The Observed Properties of Ly α Clouds as Signatures of Dark Matter Potential Wells....Pages 351-352
Redshift Dependence of the Number Density of Ly α Lines and Evolution of the Dark Matter Filamentary Structures....Pages 353-354
Hydrodynamical Simulations of Ly α Clouds....Pages 355-356
Clustering of the Ly α Clouds in the Line of Sight to the z=3.66 QSO 0055-269....Pages 357-360
The Clustering of QSO Absorption-Line Systems....Pages 361-362
Clustering in the Lyman-alpha Forest at z > 4....Pages 363-364
Large-Scale Structure at High Redshift....Pages 365-368
Investigating the Connection Between Ly α Absorbers and Large-Scale Galaxy Structures....Pages 369-370
QSO Spectra and the Evolution of Structure....Pages 371-372
QSO Absorption Lines as a Cosmic Reference Frame....Pages 373-374
Front Matter....Pages 375-375
The Ultraviolet Extragalactic Background....Pages 377-380
Effects of the Photoionizing Background on Galaxy Formation....Pages 381-382
The Helium Gunn-Peterson Test....Pages 383-392
New Results on the Gunn-Peterson Effect at High Redshift....Pages 393-396
The HeII Proximity Effect....Pages 397-398
On the He II Absorption Towards Q0302-003....Pages 399-400
Active Galactic Nuclei as Cosmological Probes....Pages 401-402
Front Matter....Pages 403-403
Models of Ly α Forest Clouds....Pages 405-418
Sizes and Dynamics of the Lyman Forest Clouds....Pages 419-425
Hydrodynamic Simulations of the Lyman Alpha Forest in a Theory of Gravitational Collapse....Pages 427-432
Uncertainties in the Interpretation of the Lyman—Alpha Forest Lines....Pages 433-434
Environmental Effects on a Lyman—Alpha Cloud Confined by a Dark Halo....Pages 435-436
Photoionization Edges of Galaxies and the HI Column Density Distribution....Pages 437-438
Hot Galactic Halos and Lyman Limit Systems of Quasars....Pages 439-440
Ly α Clouds from Dwarf Outflows....Pages 441-442
Consequences of H II Region Model for Absorption Systems in QSOs....Pages 443-444
QSO Absorption Line Systems as Pressure-Confined Clouds in Galactic Haloes....Pages 445-446
Jeans-Type Instability of the Reheated IGM....Pages 447-448
 Ω baryon and the Geometry of Intermediate Redshift Lyman α Absorption Systems....Pages 449-450
Front Matter....Pages 451-451
Summary: An Absorbing Workshop....Pages 453-468
Back Matter....Pages 469-471