Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds

Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds

Author: Tiago L. Campante

Publisher: Springer

Published: 2017-11-03

Total Pages: 288

ISBN-13: 3319593153

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This book presents the proceedings of the IVth Azores International Advanced School in Space Sciences entitled "Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds". The school addressed the topics at the forefront of scientific research being conducted in the fields of asteroseismology and exoplanetary science, two fields of modern astrophysics that share many synergies and resources. These proceedings comprise the contributions from 18 invited lecturers, including both monographic presentations and a number of hands-on tutorials.


Asteroseismic Data Analysis

Asteroseismic Data Analysis

Author: Sarbani Basu

Publisher: Princeton University Press

Published: 2017-09-05

Total Pages: 352

ISBN-13: 1400888204

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Studies of stars and stellar populations, and the discovery and characterization of exoplanets, are being revolutionized by new satellite and telescope observations of unprecedented quality and scope. Some of the most significant advances have been in the field of asteroseismology, the study of stars by observation of their oscillations. Asteroseismic Data Analysis gives a comprehensive technical introduction to this discipline. This book not only helps students and researchers learn about asteroseismology; it also serves as an essential instruction manual for those entering the field. The book presents readers with the foundational techniques used in the analysis and interpretation of asteroseismic data on cool stars that show solar-like oscillations. The techniques have been refined, and in some cases developed, to analyze asteroseismic data collected by the NASA Kepler mission. Topics range from the analysis of time-series observations to extract seismic data for stars to the use of those data to determine global and internal properties of the stars. Reading lists and problem sets are provided, and data necessary for the problem sets are available online. The first book to describe in detail the different techniques used to analyze the data on stellar oscillations, Asteroseismic Data Analysis offers an invaluable window into the hearts of stars. Introduces the asteroseismic study of stars and the theory of stellar oscillations Describes the analysis of observational (time-domain) data Examines how seismic parameters are extracted from observations Explores how stellar properties are determined from seismic data Looks at the “inverse problem,” where frequencies are used to infer internal structures of stars


Asteroseismology

Asteroseismology

Author: Pere L. Pallé

Publisher: Cambridge University Press

Published: 2014-01-13

Total Pages: 245

ISBN-13: 1107470625

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Our understanding of stars has grown significantly due to recent advances in asteroseismology, the stellar analog of helioseismology, the study of the Sun's acoustic wave oscillations. Using ground-based and satellite observatories to measure the frequency spectra of starlight, researchers are able to probe beneath a star's surface and map its interior structure. This volume provides a wide-ranging and up-to-date overview of the theoretical, experimental and analytical tools for carrying out front-line research in stellar physics using asteroseismological observations, tools and inferences. Chapters from seven eminent scientists in residence at the twenty-second Canary Islands Winter School of Astrophysics examine the interior of our Sun relative to data collected from distant stars, how to measure the fundamental parameters of single field stars, diffusion processes, and the effects of rotation on stellar structures. The volume also provides detailed treatments of modeling and computing programs, providing astronomers and graduate students a practical, methods-based guide.


Precision Asteroseismology (IAU S301)

Precision Asteroseismology (IAU S301)

Author: Joyce A. Guzik

Publisher: Cambridge University Press

Published: 2014-03-27

Total Pages: 0

ISBN-13: 9781107045170

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IAU Symposium 301 highlights the recent advances in the field of asteroseismology and was the twenty-first in a series of pulsation meetings started in Los Alamos in 1971 and held every two years. Topics discussed centred around seismic studies of all types of pulsating stars, which - in the era of space observations made by MOST, CoRoT and Kepler - use data of unprecedented precision. The Symposium was also the opportunity to honour Wojtek Dziembowski, one of the world's leaders in the study of solar and stellar pulsations. Highlights include contributions on observing from space and the ground, techniques of analysis and mode identification, astrophysical applications of pulsations, pulsation-convection interaction, mass loss, microphysics, pulsations in main-sequence stars, compact stars and supergiants, and solar-like oscillations. Containing many excellent reviews, this volume is an important reference source for researchers on solar and stellar pulsations.


Asteroseismology

Asteroseismology

Author: C. Aerts

Publisher: Springer Science & Business Media

Published: 2010-01-19

Total Pages: 872

ISBN-13: 1402058039

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Understanding the stars is the bedrock of modern astrophysics. Stars are the source of life. The chemical enrichment of our Milky Way and of the Universe withallelementsheavierthanlithiumoriginatesintheinteriorsofstars.Stars arethe tracersofthe dynamics ofthe Universe,gravitationallyimplying much more than meets the eye. Stars ionize the interstellar medium and re-ionized the early intergalactic medium. Understanding stellar structure and evolution is fundamental. While stellar structure and evolution are understood in general terms, we lack important physical ingredients, despite extensive research during recent decades.Classicalspectroscopy,photometry,astrometryandinterferometryof stars have traditionally been used as observational constraints to deduce the internal stellar physics. Unfortunately, these types of observations only allow the tuning of the basic common physics laws under stellar conditions with relatively poor precision. The situation is even more worrisome for unknown aspects of the physics and dynamics in stars. These are usually dealt with by using parameterised descriptions of, e.g., the treatments of convection, rotation,angularmomentumtransport,theequationofstate,atomicdi?usion andsettlingofelements,magneto-hydrodynamicalprocesses,andmore.There is a dearth of observational constraints on these processes, thus solar values areoftenassignedtothem.Yetitishardtoimaginethatonesetofparameters is appropriate for the vast range of stars.


Amplitude Modulation of Pulsation Modes in Delta Scuti Stars

Amplitude Modulation of Pulsation Modes in Delta Scuti Stars

Author: Dominic M. Bowman

Publisher: Springer

Published: 2017-09-07

Total Pages: 217

ISBN-13: 3319666495

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This outstanding thesis by Dominic Bowman provides a thorough investigation of long-standing questions as to whether amplitude modulation is astrophysical, whether it offers insights into pulsating stars, and whether simple beating of modes with stable amplitudes is unrecognised because of a lack of frequency resolution. In this thesis, the author studied a uniform sample of 983 delta Scuti stars—the most common type of main-sequence heat engine pulsator—that were observed nearly continuously for 4 years at stunning photometric precision of only a few parts per million by the Kepler space mission. With no mission planned to supersede the Kepler 4-year data set, this thesis will stand as the definitive study of these questions for many years. With revolutionary photometric data from the planet-hunting Kepler space mission, asteroseismic studies have been carried out on many hundreds of main-sequence solar-type stars and about 10,000 red giants. It is easy to understand why those stochastically driven stars have highly variable amplitudes. Over much of the rest of the Hertzsprung–Russell (HR) diagram, stellar pulsations are driven by heat mechanisms, which are much more regular than the stochastic driving in solar-like pulsators. Yet for decades, amplitude and frequency modulation of pulsation modes have been observed in almost all types of heat-driven pulsating stars. The author shows that the amplitude and frequency modulation are astrophysical, and he has investigated their implications and prospects to provide new insights into the delta Scuti stars and the many other types of heat-engine pulsators across the HR diagram.


Pulsating Stars

Pulsating Stars

Author: Márcio Catelan

Publisher: John Wiley & Sons

Published: 2015-02-02

Total Pages: 500

ISBN-13: 3527655204

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This book surveys our understanding of stars which change in brightness because they pulsate. Pulsating variable stars are keys to distance scales inside and beyond the Milky Way galaxy. They test our understanding not only of stellar pulsation theory but also of stellar structure and evolution theory. Moreover, pulsating stars are important probes of the formation and evolution of our own and neighboring galaxies. Our understanding of pulsating stars has greatly increased in recent years as large-scale surveys of pulsating stars in the Milky Way and other Local Group galaxies have provided a wealth of new observations and as space-based instruments have studied particular pulsating stars in unprecedented detail.