PULSE: a finite element code for solving adiabatic nonradial pulsation equations

Pierre Brassard; Stéphane Charpinet

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Code Bibliographique ADS : 2008Ap&SS.tmp....6B

DOI : 10.1007/S10509-007-9733-Z

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Astrophysics and Space Science (2008) 6

PULSE: a finite element code for solving adiabatic nonradial pulsation equations

Pierre Brassard, Stéphane Charpinet ¹

(01/2008)

We briefly present the nonradial adiabatic pulsation code PULSE first developped for white dwarf asteroseismology and now used to compute adiabatic oscillation properties for various types of stellar objects. Numerical tests show that the code is able to provide the accuracy (for a given stellar model) required to deal with the precision in frequency expected from the COROT long runs. While the ultimate objective is to compare the output of various pulsation codes (see these proceedings), we already emphasize problems that need to be addressed concerning, in particular, the mesh resolution of the input stellar models and its impact on the accuracy at which frequencies can be computed.

1 :	Laboratoire Astrophysique de Toulouse-Tarbes (LATT)

	CNRS : UMR5572 – INSU – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III

Domaine

Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Mots Clés : Methods: numerics – Stars: oscillations – Stars: asteroseismology


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Soumis le : Mercredi 11 Juin 2008, 14:42:07
Dernière modification le : Mercredi 11 Juin 2008, 14:42:07