Asteroseismology of the PG 1159 star PG 0122+200*

Authors :: Fu, J.-N.
Vauclair, G.
Solheim, J.-E.
Chevreton, M.
Dolez, N.
O'Brien, M. S.
Kim, S.-L.
Park, B.-G.
Handler, G.
Medupe, R.
Wood, M.
Gonzalez Perez, J.
Hashimoto, O.
Kinugasa, K.
Taguchi, H.
Kambe, E.
Provencal, J.
Dreizler, S.
Schuh, S.
Leibowitz, E.
Lipkin, Y.
Zhang, X.-B.
Paparo, M.
Szeidl, B.
Virághalmy, G.
Zsuffa, D.
Fu, J.-N.
Vauclair, G.
Solheim, J.-E.
Chevreton, M.
Dolez, N.
O'Brien, M. S.
Kim, S.-L.
Park, B.-G.
Handler, G.
Medupe, R.
Wood, M.
Gonzalez Perez, J.
Hashimoto, O.
Kinugasa, K.
Taguchi, H.
Kambe, E.
Provencal, J.
Dreizler, S.
Schuh, S.
Leibowitz, E.
Lipkin, Y.
Zhang, X.-B.
Paparo, M.
Szeidl, B.
Virághalmy, G.
Zsuffa, D.
Source :: Astronomy and Astrophysics; May 2007, Vol. 467 Issue: 1 p237-248, 12p
Publication Year :: 2007
Abstract: Context.The variable pre-white dwarf PG 1159 stars (GW Vir) are g-mode non-radial pulsators. Asteroseismology puts strong constraints on their global parameters and internal structure. PG 0122+200 defines the red edge of the instability strip and its evolutionary timescale is predicted to be dominated by neutrino emission. Its study offers the opportunity to better understand the instability mechanism and to validate the physics of the neutrino production in dense plasma.

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