Evolution and Seismic Tools for Stellar Astrophysics

ISBN-13: 9789048181308 / Angielski / Miękka / 2010 / 261 str.

Mario Joao P. F. G. Monteiro

Opis

This volume is a collection of original articles published by the Astrophysics and Space Science Journal. These are the result of the work initiated in 2002 with the aim to - tensively test, compare and optimize the numerical tools used to calculate stellar models and their oscillation frequencies. This effort took place under the activities of the CoRoT Evolution and Seismic Tools Activity (CoRoT/ESTA http: //www.astro.up.pt/esta/) of the Seismology Working Group of the CoRoT Mission (http: //corot.oamp.fr/). It has been organized through the participation of the European Space Agency (ESA) in this Fren- led mission, following the appointment by ESA of a Co-Investigator on Stellar Models for the CoRoT Team. The volume includes (i) articles describing most of the evolution and seismic codes currently used in the context of Helio- and Astero-Seismology, (ii) articles reporting the results of the detailed comparisons of the codes carried out over the period 2002 2007 and (iii) works discussing grids of stellar evolutionary tracks, models, and frequencies, produced for supporting the CoRoT mission. The rst paper of the collection discusses the overall aim and methodology of the work while the last paper discusses some of the open questions that still require further work in the future."

Spis treści

The CoRoT evolution and seismic tools activity.- ASTEC—the Aarhus STellar Evolution Code.- The FRANEC stellar evolutionary code.- YREC: the Yale rotating stellar evolution code.- The Geneva stellar evolution code.- The Toulouse–Geneva Evolution Code (TGEC).- CESAM: a free code for stellar evolution calculations.- The STAROX stellar evolution code.- CLÉS, Code Liégeois d’Évolution Stellaire.- The ATON 3.1 stellar evolutionary code.- GARSTEC—the Garching Stellar Evolution Code.- PULSE: a finite element code for solving adiabatic nonradial pulsation equations.- ADIPLS—the Aarhus adiabatic oscillation package.- Porto Oscillation Code (posc).- Granada oscillation code (GraCo).- NOSC: Nice OScillations Code.- The OSCROX stellar oscillaton code.- The Liège Oscillation code.- filou oscillation code.- LNAWENR—linear nonadiabatic nonradial waves.- Reference grids of stellar models and oscillation frequencies.- Grids of stellar evolution models for asteroseismology (cesam + posc).- Grids of stellar models and frequencies with CLÉS + LOSC.- CoRoT/ESTA–TASK 1 and TASK 3 comparison of the internal structure and seismic properties of representative stellar models.- FRANEC versus CESAM predictions for selected CoRoT ESTA task 1 models.- Thorough analysis of input physics in CESAM and CLÉS codes.- Inter-comparison of the g-, f- and p-modes calculated using different oscillation codes for a given stellar model.- Concluding remarks and perspectives on the evolution and seismic tools activity (ESTA) of the CoRoT community.

Blurb

This volume is a collection of original articles published by the journal Astrophyscis and Space Science, Volume 316, Number 1-4, August 2008. These are the result of the work initiated in 2002 with the aim to extensively test, compare and optimize the numerical tools used to calculate stellar models and their oscillation frequencies.

This collection of papers provides a unique reference that covers 10 evolution codes and 9 oscillation codes. Most of these have been used to produce numerous results published over the years and have never before been fully described in literature. The comparisons that were carried out over a period of 4 years resulted in a comprehensive study that covered the numerical aspects of the different codes and the implementation of the physics they use, and have provided the basis for further development of the codes. The same work has also allowed for a detailed characterization of the precision and expected shortfalls of the models produced by these tools. Consequently, this volume is expected to be of great relevance for researchers and research students working on the modeling of stars and on the implementation of seismic test of stellar models. Moreover, it is expected to have a high impact on the analysis of the data acquired by (ongoing and future) ground-based instruments and space missions in helio- and astero-seismology.