Upper Main Sequence Stars with Anomalous Abundances: Proceedings of the 90th Colloquium of the International Astronomical Union, held in Crimea, U.S.S.R., May 13–19, 1985

Front Matter....Pages i-xiv
The Origin and Structure of the Magnetic Fields of the Chemically Peculiar Stars....Pages 1-10
Origin of the Magnetic Field....Pages 11-24
On the Spottedness, Magnetism and Internal Structure of Stars....Pages 25-28
Investigations of the Magnetic Fields of Chemically Peculiar Stars of Different Age....Pages 29-32
The Magnetic Field and other Parameters of the Chemically Peculiar Stars....Pages 33-36
On the Perturbation Technique for the Influence of Magnetic Field on Stellar Oscillations....Pages 37-40
On the Magnetic Field of β CrB....Pages 41-44
Discussion....Pages 45-47
Does ν Cep Indicate a Non-axisymmetric Dynamo?....Pages 49-49
Model Atmospheres and Radiative Transfer in Chemically Peculiar Stars: Interpretational Significance of Non-LTE....Pages 51-56
Influence of the Magnetic Field on the Polarization of Radiation Scattered by Electrons in Stellar Atmospheres and Envelopes....Pages 57-79
A Determination of Magnetic Fields of T Tau and Ae/Be Herbig Stars using the Parameters of their Linear Polarization....Pages 81-86
Practical Problems in the Analysis of CP Stars....Pages 87-90
Missing Levels and Lines of Astrophysical Importance....Pages 91-98
Characteristic Absorption Features in the Spectra of Ap-Si Stars Between 1250 and 1850 Å....Pages 99-104
Space Observations of Chemically Peculiar and Related Normal Stars....Pages 105-107
Study of Inhomogeneities on the Surface of Magnetic CP Stars....Pages 109-123
Inverse Problems in Astrophysics....Pages 125-134
The Distribution of Fe, Cr, and Si over the Surface of θ Aur....Pages 135-136
Application of Deutsch’s Method for 53 Cam....Pages 137-140
The Nonhomogeneous Distribution of Abundances and the Magnetic Field Measurements in CP Stars....Pages 141-147
Systematics of CP Stars....Pages 149-149
Spectroscopy of CP Stars in the Groups of Different Age....Pages 151-158
Rotation, Variability and Age of Ap Stars....Pages 159-166
Light curve analysis of rotating variable stars....Pages 167-170
A Search for Long-Term Photometric Variability in CP2-Stars....Pages 171-174
The Nature of Balmer Line Variability in Chemically Peculiar Stars....Pages 175-177
The Variability of the λ5200 Feature in CP2 Stars....Pages 179-181
Short time light variations of Ap-stars....Pages 183-187
CP-Stars in the Near Infrared: Normal!....Pages 189-190
Hα and OI Photometry of Upper Main Sequence Stars with Anomalous Abundances....Pages 191-194
A Photometric Investigation of the Magnetic Star 53 Camelopardalis....Pages 195-198
Spectrophotometry of the Broad Continuum Features in Magnetic Ap Stars....Pages 199-199
On the Duplicity of CP3 Stars....Pages 201-204
Investigations of CP and Normal Stars with Coadded Dominion Astrophysical Observatory Spectrograms....Pages 205-208
Rapid Oscillations of CP2-Stars....Pages 209-217
Computed Spectral Line Variations for Oblique Nonradial Pulsators....Pages 219-233
Short-Periodic Radial Velocity Variations of the B9p Star ET And....Pages 234-234
Frequency Analysis of the Rapidly Oscillating Ap Star HD 60435....Pages 235-238
Investigations of the Magnetic Star 53 Cam Variations using the Spectra of High Time Resolution....Pages 239-242
HD 24975: A New Delta Scuti Star? (Or a Mild Ap Star with Short Photometric Variations?)....Pages 243-252
Hot Magnetic Stars Abundances, Spectroscopy, Photometry, Systematics....Pages 253-256
On the Ultraviolet Photometric Variability of the Helium-Weak B Stars (From ANS Data)....Pages 257-269
Intermediate Peculiar Stars : The Bp-Ap Si Stars....Pages 271-274
Blanketing Hypothesis and Light Variations of HD 27309....Pages 275-290
A Spectroscopic Study of the Bp-Star θ Aur....Pages 291-294
The Ultraviolet Spectral Energy Distribution of the Magnetic Ap Star HD 170000 Inside and Outside of the Spots....Pages 295-298
Cool Magnetic CP Stars....Pages 299-304
Abundance Analysis of Three Ap Stars: HD2453, HD8441, and HD192913....Pages 305-317
Absorption Lines of CaII and H in the Near IR Region of the Magnetic Star HD 152107....Pages 319-322
A Search for Heavy Elements in the Ultraviolet Spectra of Ap Stars....Pages 323-326
The Investigations of Variations in the Depression λ 4200, λ 5200 of the Magnetic Stars 53CAM and Beta CrB.....Pages 327-340
Discussion....Pages 341-344
The age of ε UMa....Pages 345-345
Line Spectrum Variations in the AP Star HD 5I4I8....Pages 347-350
βCrB — a Rosetta stone?....Pages 351-354
Some Structural Features of Magnetic Fields of the Chemically Peculiar Stars β Cr B and α 2 CVn....Pages 355-358
β Lyrae — A Binary System with Anomalous Abundances and Magnetic Field....Pages 359-363
Spectroscopic Analyses of Hot Main Sequence Stars....Pages 365-368
Diffusion Processes and Chemical Peculiarities in Magnetic Stars....Pages 369-380
Chemical and Temperature Inhomogeneities on Stellar Surfaces as a Result of an Instability....Pages 381-393
Non-Magnetic Intermediate-Temperature Stars: A Review....Pages 395-396
The Abundance of Gallium in B-Type Chemically Peculiar Stars....Pages 397-419
Gallium Overabundance in the Ap-Si Star HD 25823....Pages 420-420
The Most Iron-Deficient Manganese Star HR562....Pages 421-424
The Light and Spectrum Variable CP2 Star HR 6127....Pages 425-428
The Analysis of Chemical Composition of Am Star Atmospheres....Pages 429-432
Lithium in Am and δDel Stars....Pages 433-445
The LI I 6708 Feature in CP Stars....Pages 447-450
The Metallic-Lined Star 32 Aquarii....Pages 451-453
Particle Transport in Non-Magnetic Stars....Pages 455-457
The Planetoid-Impact Hypothesis of CP, F, A, and B Star Formation: Possibilities and Perspectives....Pages 459-472
Back Matter....Pages 473-478
....Pages 479-489