The IGM/Galaxy Connection

This volume contains the proceedings of the meeting entitled, "The IGM/Galaxy Connection: The Distribution of Baryons at z = 0. " The meeting was held August 8 -10 at the National Center for Atmospheric Research (NCAR) located in Boulder, Colorado on the foothills of the Rocky Mountains (see conference photo). We organized this meeting because we felt it was time to address the link between galaxies and the intergalactic medium at low redshift. In this vein, we posed several questions to the conference participants: Where are the baryons in the local universe and in what phase do they reside? What signatures of galaxy evolution have been imprinted on the IGM? What percentage of intergalactic gas is left from the galaxy formation process? What does the distribution of baryons at z = 0 tell us about the early universe? The conference was an overwhelming success with lots of friendly interaction and discussion among the participants. At lunch we were treated to splendid views from the NCAR terrace and discussions rang­ ing from the importance of the LSR, GSR, and LGSR velocity frames to how long the desserts would last with 90 astronomers and the hot Boul­ der sun. From an inventory of the baryons, to the associations between galaxies and Lya absorbers, to the mechanisms by which galaxies obtain and lose gas, the conference covered many topics. The results of these endeavors are contained in these pages and eloquently summarized by Chris Impey.

Inhalt

I. The Baryon Inventory at z = 0.- The Inventory and Distribution of Baryons at Redshift z = 0.- Ia. Galaxies.- Diffuse Baryons in the Universe: Galaxies, Warm Gas, or Cold Lonely Lumps.- The HIPASS Catalogue.- Strong Absorption-Line Systems at Low Redshift: Mg II and Damped Ly?.- CO Luminosity Function and the First Estimate for ?HI+H2.- Effects of Noise on Galaxy Isophotes.- The Contribution of HI-Rich Galaxies to the Damped Ly? Absorber Population at z = 0.- Characteristics of HI -Massive Galaxies.- Ib. The Ly? Forest.- Exploring the Low-Redshift Cosmic Web with O VI Absorption Lines.- The Baryon Content of the Local Ly? Forest.- Galaxies as Fluctuations in the Ionizing Background Radiation at Low Redshift.- Hydrodynamical Simulations of the IGM at High Mach Numbers.- The IGM-Galaxy Connection: The Line of Sight to 3C 273.- High-Resolution Observations of the Lyman-? Forest in the Redshift Interval 0.9 ? z ? 1.9.- A 50 Gpc Hike Through the Ly? Forest.- FUSE and STIS Observations of Intergalactic Absorption Towards PG 1259+593.- Ic. The Hot Phase.- A Chandra and XMM View of the Mass & Metals in Galaxy Groups and Clusters.- Chandra Detection of X-ray Absorption from Local Warm/Hot Gas.- X-ray Observations of the Warm-Hot Intergalactic Medium.- X-ray IGM in the Local Group.- Id. Evolution with z.- Evolution of HI from z = 5 to the Present.- The Evolution of the Ultraviolet Background.- Strong Mg II Absorption Systems in QSOs from the Sloan Digital Sky Survey Early Data Release.- II. The Characterization of Galaxy Halos.- Ly? Absorption Around Nearby Galaxies.- Absorption Signatures of the Gaseous Phases of Galaxies.- MgII/CIV Kinematics vs. Stellar Kinematics in Galaxies.- Highly Ionized High Velocity Gas in the Vicinity of the Milky Way.- H? Emission from HVCs and Ionization Sources in the Galactic Halo.- The Metallicity of High-Velocity Cloud Complex C.- The Multi-Phase Absorption Systems Toward PG 1206+459.- Highly Ionized Gas in High Velocity Clouds - The PG 1259+593 Sight Line through Complex C.- Feeding the IGM through Galaxy Interactions.- The FUSE survey of O VI In and Near the Galaxy.- III. The Relics of Galaxy Formation.- How Do Galaxies Get Their Gas.- Dwarf Sphs/First-Galaxies Connection.- Cosmology on a Mesh.- The PSCz Galaxy Power Spectrum Compared to N-Body Simulations.- IV. Feedback Mechanisms.- Properties of Galactic Winds and Their Impact on the IGM.- The Complicated Life of Elliptical Galaxies.- Galactic Recycling: The HI Ring Around NGC 1533.- SNe Ia and the Formation History of Early-Type Galaxies.- V. Metallicity of the IGM.- A High-Resolution Survey for Low-Redshift CIV Absorbers.- Galactic Chemical Evolution: The Solar Neighborhood.- Recovering Intergalacic Metallicity Using Pixel Optical Depths.- NIR High Resolution Spectroscopy of High-z QSO Absorption Systems with Subaru IRCS.- VI. Cosmic Web.- Line Versus Flux Statistics - Considerations for the Low Redshift Lyman-? Forest.- The Nature and Abundance of Ly? Clouds in Voids.- The Ly? Forest Toward PKS 0405-123.- Ly? Absorber Correlations and the "Bias" of the Ly? Forest.- On the Intergalactic Origin of the z ? 0 Absorber Detected by Chandra and FUSE.- A Comparison Of Virgo Cluster Absorption Along Two Sight Lines.- Skewering the Cosmic Web with Quasars.- An Atlas of Low Redshift Absorption in FUSE Sight Lines.- VII. Spiral-Rich Groups and the Local Group.- A Census of Poor Groups: Hot Gas, Cold Gas, and Galaxies.- Is there an Intragroup Medium in the Local Group?.- Where has all the Neutral Hydrogen Gone?.- Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent.- VIII. Elliptical-Rich Groups and Clusters.- Simulating the Hot X-ray Emitting Gas in Elliptical Galaxies.- Watching Galaxies Fall Into Coma.- Intracluster Entropy.- FIR Observations of Intracluster Dust in Galaxy Clusters.- IX. Summary, Synthesis, and the Future.- Baryons in the Local Universe.- Author Index 345.