Asymptotic Giant Branch Stars

ISBN-13: 9780387008806 / Angielski / Twarda / 2003 / 562 str.

H. J. Habing; H. Olofsson; Harm J. Habing

Opis

This book deals with stars during a short episode before they undergo a ma- jor, and fatal, transition. Soon the star will stop releasing nudear energy, it will become a planetary nebula for abrief but poetic moment, and then it will turn into a white dwarf and slowly fade out of sight. Just before this dramatic change begins the star has reached the highest luminosity and the largest diameter in its existence, and while it is a star detectable in galaxies beyond the Local Group, its structure contains already the inconspicuous white dwarf it will become. It is called an "asymptotic giant branch star" or "AGB star." Over the last 30 odd years AGB stars have become a topic of their own although individual members of this dass had already been studied for cen- turies without realizing what they were. In the early evolution, so called "E-AGB"-phase, the stars are a bit bluer than, but otherwise very similar to, what are now called red giant branch stars (RGB stars). It is only in the sec- ond half of their anyhow brief existence that AGB stars differ fundamentally from RGB stars.

Recenzje

From the reviews:

"AGB stars have red giants as progenitors, and are fated to become planetary nebulae and white dwarfs. This book comprises a set of papers dealing with all aspects of the physics of these stars. It is intended for a graduate study level ... . the chapters which are designed to be self-standing do provide interesting discussions about theory and corroborative observations, and I think there is lot that can be gleaned ... ." (Callum Potter, Journal of the British Astronomical Association, Vol. 114 (3), 2004)

Spis treści

Preface Chapter 1: Introduction: H.J. Habing and H. Olofsson N.B.: This chapter is not yet completed! 1.1 Bits of history 1.2 The structure of AGB stars 1.3 Observational characteristics of AGB stars 1.4 Distinctive properties of AGB stars Chapter 2: Evolution, Nucleosynthesis and Pulsation: P. Wood and J. Lattanzio 2.1 Basic observational properties 2.2 Pre-AGB evolution 2.3 Stellar evolution on the AGB 2.4 Evolution beyond the AGB: planetary nebula nuclei and white dwarfs 2.5 Nucleosynthesis in AGB stars 2.6 Variability 2.7 Conclusions and outlook Chapter 3: Synthetic AGB Evolution: M. Groenewegen, P. Marigo 3.1 The role of synthetic evolutionary models 3.2 A historical overview 3.3 The main ingredients of a synthetic AGB model 3.4 Stellar yields 3.5 From one star to population synthesis 3.6 Observational constraints 3.7 conclusions and outlook Chapter 4: Atmospheres: B. Gustafsson and S. H¨ofner 4.1 Introduction 4.2 Observations 4.3 Physics and characteristic conditions 4.4 The microscopic state of matter 4.5 The radiation .eld 4.6 The modelling of AGB star atmospheres 4.7 Dynamics 4.8 Mass loss 4.9 Abundances and other fundamental paramters 4.10 Conclusions and outlook Chapter 5: Molecule and grain formation: T. Miller 5.1 Introduction 5.2 Chemical processes for molecule and dust formation 5.3 Detailed models- carbon-rich envelopes 5.4 Detailed models- oxygen-rich envelopes 5.5 Complications 5.6 Conclusions and outlook Chapter 6: Dynamics and instabilities in dusty winds: Y. Simis and P. Woitke 6.1 Introduction 6.2 Modelling the AGB wind 6.3 Instabilities and structure in the out.ow 6.4 Conclusions and outlook Chapter 7: Circumstellar envelopes: H. Olofsson 7.1 Introduction 7.2 A 'standard' gas AGB-CSE 7.3 Circumstellar line observations 7.4 A 'standard' dustAGB-CSE 7.5 Circumstellar dust observations 7.6 Morphology and kinematics of AGB-CSEs 7.7 Mass-loss rate estimators 7.8 Mass-loss rate 7.9 Conclusions and outlook Chapter 8: AGB stars as tracers of a galactic population: H.J. Habing and P.A. Whitelock 8.1 Introduction 8.2 The Milky Way galaxy and its companions 8.3 M31 and its companions 8.4 The remaining members of the Local Group 8.5 AGB stars in galaxies outside of the Local Group 8.6 Conclusions and outlook Chapter 9: AGB stars in Binaries and their Progeny: A. Jorissen 9.1 The binary-AGB connection 9.2 AGB stars in binary systems 9.3 Impact of binarity on intrinsic properties of AGB stars 9.4 The progeny of AGB stars in binary system 9.5 Conclusions and outlook Chapter 10: Post-AGB stars: C.Waelkens and R.Waters 10.1 Introduction 10.2 Observational de.nition of a post-AGB star 10.3 Observed properties of post-AGB stars: the central star 10.4 Observed properties of post-AGB stars: the envelope 10.5 Binary post-AGB stars 10.6 Confrontation of observations with theory 10.7 Conclusions and outlook Index List of acronyms Some biographical notes about the authors