...órsico^1,2,

Member of the Carrera del Investigador Científico y Tecnológico, CONICET, Argentina.

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... mode

That is, a mode with their eigenfunctions sensitive to the deep regions of the star.

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... one

That is, a mode whose eigenfunctions are concentrated mostly toward the outer layers.

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... PG 1159 stars

PG 1159 stars are hydrogen-deficient post-asymptotic giant branch (post-AGB) stars that are widely believed to be the result of a born-again episode (see Schönberner 1979 and Iben et al. 1983) and the immediate predecessors of most hydrogen-deficient white dwarfs.

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... website

http://www.fcaglp.unlp.edu.ar/evolgroup/

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... ignored

It is worth mentioning that we have turned off neutrino emission at a high effective temperature ($\approx$60 000 K). As a result, the model has adequately readjusted its thermal structure long before the DBV regime is reached.

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