White Dwarfs: Proceedings of the 10th European Workshop on White Dwarfs, held in Blanes, Spain, 17–21 June 1996

Front Matter....Pages i-xxiii
Front Matter....Pages 1-1
The Empirical White Dwarf Mass – Radius Relation....Pages 3-9
What We Have Learned about White Dwarfs from Studies of Novae....Pages 11-17
The Redistribution of Carbon and Oxygen in Crystallizing White Dwarfs....Pages 19-25
The Cooling of White Dwarfs and Their Internal Composition....Pages 27-33
Theoretical Models of White Dwarfs with Helium-Rich Interiors....Pages 35-41
The Electrostatic Screening of Thermonuclear Reactions in Astrophysical Plasmas....Pages 43-48
The Possible White Dwarf-Neutron Star Connection....Pages 49-55
The Impact of Evolutionary Envelope Masses on the Evolution of White Dwarfs....Pages 57-62
The Progenitors of High-Mass White Dwarfs....Pages 63-66
The Multiperiodic, Short-Period Variations of WZ Sge....Pages 67-70
Limits on Gravities of Evolved Stars, from Infrared Photometry and Binary Companions....Pages 71-74
Rotation: CO White Dwarfs Near the Chandrasekhar Limiting Mass....Pages 75-78
The Accretion-Induced Collapse of White Dwarfs Revisited in 3D....Pages 79-82
Front Matter....Pages 83-83
Towards a Luminosity Function of Hot DA White Dwarfs....Pages 85-89
White Dwarfs in M67....Pages 91-96
Monte Carlo Simulations of the Kinematics and Luminosity Function of White Dwarfs....Pages 97-104
Monte Carlo Simulations of the White Dwarf Population and Luminosity Function....Pages 105-111
Halo White Dwarfs: A Conservative Point of View....Pages 113-119
Halo White Dwarfs: A Non Conventional Scenario....Pages 121-127
HST Observations of White Dwarfs in the Globular Cluster NGC 6397....Pages 129-134
Front Matter....Pages 83-83
The Distance and Age of the Globular Cluster NGC6752 Measured by HST Observations of Cluster and Field White Dwarfs....Pages 135-141
DA White Dwarfs in the Montréal-Cambridge-Tololo Survey....Pages 143-147
Cool White Dwarf Survey using Stacked Digitised Schmidt Plates....Pages 149-152
Front Matter....Pages 153-153
Chemical Evolution of Cool White Dwarf’s Atmospheres....Pages 155-163
The Chemical Evolution of White Dwarf Stars: What the Observations Tell Us....Pages 165-171
A Critical Look at the Question of Thick vs Thin Hydrogen and Helium Envelopes in White Dwarfs....Pages 173-192
Polyatomic Carbon Molecules in Very Cool Helium-Rich White Dwarfs....Pages 193-198
Analysis of Optical, UV, and EUV Observations of G 191-B2B....Pages 199-205
New Results on PG 1159 Stars and Ultrahigh-Excitation DO White Dwarfs....Pages 207-212
Non-LTE Analyses of DO White Dwarfs....Pages 213-219
New Spectral Analyses of Pre-White Dwarfs....Pages 221-227
The Sphericity Effects in the NLTE Model Atmospheres of White Dwarfs....Pages 229-235
Heavy Elements in White Dwarf Envelopes....Pages 237-243
Lyman Spectra of Hot DA White Dwarfs....Pages 245-251
Diffusion of Silicon in the Envelopes of Hot DA White Dwarfs....Pages 253-258
Time-Dependent Diffusion Calculations for Hot Pre-White Dwarfs....Pages 259-263
Evolutionary Calculations of Carbon Dredge-Up in Helium Envelope White Dwarfs....Pages 265-267
Analysis of Optical and Ultraviolet Spectroscopy of the DAZ White Dwarf G74-7....Pages 269-272
Modeling Extreme Ultraviolet Spectra of White Dwarfs with High-Metallicity LTE Models....Pages 273-276
Extreme Ultraviolet Spectroscopy of EUVE J0720-317 and EUVE J0723-277....Pages 277-280
Front Matter....Pages 153-153
A New Dithered EUVE Spectrum of PG 1234+482....Pages 281-284
Line of Sight H and He Ionization Fractions in the Local Interstellar Medium....Pages 285-288
An Instrument for Observations of EUV Opacity Sources in G191-B2B....Pages 289-292
Metals in the Variable DA G29-38....Pages 293-296
Front Matter....Pages 297-297
In Search of the Double Degenerate Progenitors of Type IA Supernovae....Pages 299-305
The Double Degenerate Population....Pages 307-314
White Dwarf+M Dwarf Systems: A New Infrared Search....Pages 315-320
The EC14026 Stars: A New Class of Pulsating Star....Pages 321-327
Hot White Dwarfs in Non-Interacting Binaries from the ROSAT EUV Survey....Pages 329-335
HST Observations of AM Canum Venaticorum....Pages 337-343
Effects of Irradiation on the Secondary Star in a Tight Binary System, Exemplified by AM Canum Venaticorum....Pages 345-351
White Dwarfs in AM Herculis Systems....Pages 353-358
HST Synthetic Spectral Analysis of U Gem in Early and Late Quiescence: A Heated White Dwarf and Accretion Belt....Pages 359-366
WFPC2 Observations of Procyon B....Pages 367-373
Extreme Ultraviolet Light Curve and Phase-Resolved Spectroscopy of the Hot White Dwarf in V471 Tauri....Pages 375-381
Unique White Dwarfs Accompanying Recycled Pulsars....Pages 383-389
Merging of Different Mass Ratio White Dwarfs: First Moments of the 0.4-1.2 M ⊙ Case....Pages 391-394
Front Matter....Pages 395-395
New Results of Magnetic White Dwarf Spectroscopy....Pages 397-403
1-D and 2-D Calculations of Dynamo-Generated Magnetic Fields in White Dwarfs....Pages 405-411
Magnetic Field Survey of DC White Dwarfs....Pages 413-419
Front Matter....Pages 395-395
New IUE-Spectra of the Magnetic White Dwarf GRW +70°8247 and Their Interpretation....Pages 421-425
Front Matter....Pages 427-427
Convection and the ZZ Ceti Instability Strip....Pages 429-435
Wet Observations of the DAV Variable HL TAU 76: First Results....Pages 437-443
Preliminary Asteroseismology of G 29–38....Pages 445-450
Recent Advances in the Theoretical Determination of the ZZ Ceti Instability Strip....Pages 451-457
Cool DAV Asteroseismology....Pages 459-465
Overstability of G-Modes in ZZ Ceti Variables....Pages 467-472
A Continuing Spectroscopic Study of the Instability Strip of the Pulsating DB (V777 HER) White Dwarfs: The View in the Optical....Pages 473-476
The Potential of Asteroseimology for Hot, B Subdwarfs: A New Class of Pulsating Stars?....Pages 477-480
Modeling Time-Resolved Spectra of ZZ Ceti Stars....Pages 481-484
Discovery of Two New ZZ Ceti Variables....Pages 485-487
Non-Pulsating DA White Dwarfs in the DAV Region....Pages 489-492