The oEA star TW Dra - a spectroscopic analysis

Details The oEA star TW Dra - a spectroscopic analysis The oEA star TW Dra - a spectroscopic analysis

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008coast.157..332l&link_type=abstract

Communications in Asteroseismology, Vol.157, p. 332-333

Computer Science

5

Scientific paper

We investigate a spectroscopic time series of the oscillating Algol-type star TW Dra to derive basic system and stellar parameters and to prepare for mode identification. From the orbital solution we derive precise masses and get disentangled spectra of the components by using KOREL. For the primary we derive about solar abundance. Computed LSD profiles show a puzzling picture of blue-to-red traveling bumps indicating a rich spectrum of nonradial pulsations. Three pulsation frequencies could be found by using FAMIAS. A first attempt of mode identification indicates that TW Dra shows high-degree modes in the range of l=7-12.

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