Asteroseismology Across the H.R. Diagram: Proceedings of the Asteroseismology Workshop Porto, Portugal 1-5 July 2002

We stand at the threshold of an exciting era of Asteroseismology. In a few months' time, the Canadian small-satellite asteroseismology mission MOST will be laun­ ched. Danish and French missions MONS and COROT should follow, with the ESA mission Eddington following in 2007/8. Helioseismology has proved spec­ tacularly successful in imaging the internal structure and dynamics of the Sun and probing the physics of the solar interior. Ground-based observations have detected solar-like oscillations on alpha Centauri A and other Sun-like stars, and diagnostics similar to those used in helioseismology are now being used to test and constrain the physics and evolutionary state of these stars. Multi-mode oscillations are being observed in an abundance of other stars, including slowly pulsating B stars (SPB stars), delta Scuti stars, Ap stars and the pulsating white dwarfs. New classes of pulsators continue to be discovered across the Hertzsprung-Russell diagram. For good reason it was decided to entitle our conference 'Asteroseismology Across the HR Diagram' . Yet the challenges still to be faced to make asteroseismology across the HR diagram a reality are formidable. Observation, data analysis and theory all pose hard problems to be overcome. In conceiving this meeting, the aim of the organisers was to facilitate a cross-fertilization of ideas and approaches between researchers working on different pulsators and with different areas of expertise. We venture to suggest that in this the conference was a great success. Front Matter....Pages i-xviii Space and Ground Based Data for Asteroseismology....Pages 1-12 Stare Results on a Single Field: Tens of New Pulsating Stars....Pages 13-16 The Eddington Mission....Pages 17-19 Present Observational Status of Solar-Type Stars....Pages 21-28 Present Observational Status of the Intermediate Mass Stars: δ Sct Stars, γ Dor Stars and roAp Stars....Pages 29-35 Present Observational Status of High Mass Pulsating Stars....Pages 37-44 Old Pulsators: White Dwarfs and Their Immediate Precursors....Pages 45-52 δ Scuti Pulsations in Pre-Main Sequence Stars....Pages 53-60 Solar-Like Oscillations in Semiregular Variables....Pages 61-64 Discovery of a New Class of Pulsating Stars: Gravity-Mode Pulsators among Subdwarf B Stars....Pages 65-68 Recent Observations of PMS δ Scuti Stars....Pages 69-72 Multicolor Photometry for Mode Identification....Pages 73-84 High-Resolution Spectroscopy for Pulsation-Mode Identification....Pages 85-96 Theoretical Clues for Mode Identification — Instability Ranges and Rotational Splitting Patterns....Pages 97-107 Peak Bagging for Solar-Like Stars....Pages 109-119 Mode Identification from Line Profiles Using the Direct Fitting Technique....Pages 121-124 Statistical Revision of the Moment Method....Pages 125-128 An Improved Method of Photometric Mode Identification: Applications to Slowly Pulsating B, β Cephei, δ Scuti and γ Doradus Stars....Pages 129-132 Photometric Nonadiabatic Observables in Rotating β Cephei Models....Pages 133-136 Gravity Modes in Delta Scuti Stars....Pages 137-140 Seismic Inference Using Genetic Algorithms....Pages 141-151 Stellar Inversions....Pages 153-164 On the Principal Asteroseismic Diagnostic Signatures....Pages 165-185 Diagnostics of the Internal Structure of Stars Using the Differential Response Technique....Pages 187-191 Stellar Convection....Pages 193-204 Diffusion and Mixing in Main-Sequence Stars....Pages 205-215 Are Pulsation and Magnetic Axes Aligned in roAP Stars?....Pages 217-220 Seismic Diagnostics of Stellar Convection Treatment from Oscillation Amplitudes of P -Modes....Pages 221-224 Of Variability, or Its Absence, in HgMn Stars....Pages 225-228 A Study of the Solar-Like Properties of β Hydri....Pages 229-232 Giant Vibrations in Dip....Pages 233-236 Stochastic Excitation of Gravity Waves by Overshooting Convection in Solar-Type Stars....Pages 237-240 P-Mode Oscillations of α Cen A....Pages 241-244 Outstanding Issues on Pulsations in Young Stars....Pages 245-255 Outstanding Issues for Post-Main Sequence Evolution....Pages 257-268 Hot Subdwarfs: Magnetic, Oscillatory and Other Physical Properties....Pages 269-272 Nonlinearity of Nonradial Modes in Evolved Stars....Pages 273-276 Problems, Connections and Expectations of Asteroseismology: A Summary of the Workshop....Pages 277-294 This book aims to facilitate a cross-fertilisation of ideas and approaches between fields covering different pulsators and with different areas of expertise. The book successfully covers most known types of pulsators, reflecting a highly productive and far reaching interchange of ideas which we believe is conveyed by the papers and posters published, making it a reference for researchers and postgraduate students working on stellar structure and evolution Proceedings of the Asteroseismology Workshop, held in Porto, Portugal, 1-5 July 2002