Spectroscopic search for g-mode pulsations in ψ Centauri

Details Spectroscopic search for g-mode pulsations in ψ Centauri Spectroscopic search for g-mode pulsations in ψ Centauri

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...512a..42m&link_type=abstract

Astronomy and Astrophysics, Volume 512, id.A42

Astronomy and Astrophysics

Astrophysics

Binaries: Eclipsing, Stars: Oscillations, Stars: Fundamental Parameters, Line: Profiles, Technique: Spectroscopic

Scientific paper

Context. Prior analysis of the light curve of the eclipsing binary ψ Cen has shown the possible presence of g-mode pulsations. Aims: We will try to confirm this claim by means of the analysis of high-resolution and high signal-to-noise echelle spectrograms. Methods: We studied both the radial velocity curve and the line profile variations of ψ Cen. Results: We obtained accurate measurements of the masses and radii of the two components. Regarding the study of pulsations, the orbital motion of the stars can explain all the observed variations in the spectrograms. Conclusions: There is no evidence of g-mode pulsations in ψ Cen in the spectroscopic data.

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