Constraints on the Structure of HL Tau 76 Derived from Asteroseismology

Details Constraints on the Structure of HL Tau 76 Derived from Asteroseismology Constraints on the Structure of HL Tau 76 Derived from Asteroseismology

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..334..573p&link_type=abstract

14th European Workshop on White Dwarfs, ASP Conference Series, Vol. 334 Proceedings of a meeting held at Kiel, July 19-23, 2004

Astronomy and Astrophysics

Astronomy

Scientific paper

We used the periods of the independent modes identified from the WET data to constrain the internal structure of HL Tau 76. We computed a grid of DA white dwarf models with parameters consistent with the values derived from spectroscopy and their ℓ=1 and ℓ=2 non-radial modes. The observed period distribution shows a good agreement with the periods of a hydrogen thick model with q(H)= MH/M*=2× 10-4, having a total mass and an effective temperature consistent with the spectroscopic values. An identification of the observed modes is proposed.

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