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Constraining the axion mass through the asteroseismology of the ZZ Ceti star G117-B15A

We perform an asteroseismological study on the DAV star G117-B15A on the basis of a modern set of fully evolutionary DA white dwarf models that have consistent chemical profiles at the core and the envelope. We found an asteroseismological model for G117-B15A that closely reproduces its observed pulsation periods. Then, we use the most recently measured value of the rate of period change for the dominant mode of this pulsating star to impose a preliminary upper limit to the mass of the axion.

preprint2011arXivOpen access
A. H. CórsicoL. G. AlthausA. D. RomeroM. M. Miller BertolamiE. García-BerroJ. Isern
astro-ph.SR
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A. H. CórsicoL. G. AlthausA. D. RomeroM. M. Miller BertolamiE. García-BerroJ. Isern

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