Open AccessThe phase function for stellar acoustic oscillations — IV. Solar‐like stars
Author(s) -
Pérez Hernández F.,
ChristensenDalsgaard J.
Publication year - 1998
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1998.01203.x
Subject(s) - physics , stars , astrophysics , context (archaeology) , phase (matter) , main sequence , spectral line , helioseismology , helium , function (biology) , astronomy , atomic physics , magnetic field , paleontology , quantum mechanics , evolutionary biology , biology
In recent years there has been some progress towards detecting solar‐like oscillations in stars. The goal of this challenging project is to analyse frequency spectra similar to that observed for the Sun in integrated light. In this context it is important to investigate what can be learned about the structure and evolution of the stars from such future observations. Here we concentrate on the structure of the upper layers, as reflected in the phase function. We show that it is possible to obtain this function from low‐degree p modes, at least for stars on the main sequence. We analyse its dependence on several uncertainties in the structure of the uppermost layers. We also investigate a filtered phase function, which has properties that depend on the layers around the second helium ionization zone.