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Paper: Theoretical Modeling of Pulsating Low-mass White Dwarfs
Volume: 493, 19th European Workshop on White Dwarfs
Page: 221
Authors: Córsico, A. H.; Althaus, L. G.
Abstract: Photometric variations in some low-mass white-dwarf stars have been recently detected (Hermes et al. 2012). Such variability is though to be due to long-period nonradial pulsation g modes. Pulsating low-mass white dwarfs make up a new, separate class of pulsating white dwarfs with H rich atmospheres, low effective temperatures (Teff=7800–10000 K), and low gravities (log g= 6–6.8) (Hermes et al. 2013ab). Asteroseismology of these stars can provide valuable clues about their internal structure and evolutionary status, allowing us to place constraints on the binary evolutionary processes involved in their formation. We present here the main results of a detailed pulsational study applied to low-mass He-core white dwarfs, based on full evolutionary models representative of these objects. The main aim of this work is to provide a solid theoretical basis from which to interpret present and future observations of variable low-mass white dwarfs.
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