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Monitoring of the cool ZZ Ceti star PG 2303+243

Published online by Cambridge University Press:  01 August 2006

E. Pakštienė ,
J.-E. Solheim ,
G. Handler ,
B. Steininger ,
F. Rodler ,
M. Paparo ,
Z. Bognar ,
R. Patterson  and
M. Reed
E. Pakštienė
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
J.-E. Solheim
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
G. Handler
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
B. Steininger
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
F. Rodler
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
M. Paparo
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
Z. Bognar
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
R. Patterson
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
M. Reed
Affiliation:
VU Institute of Theoretical Physics and Astronomy, Vilnius, Lithuania email: erika@itpa.lt
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Abstract

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Because PG 2303+243 had not been observed since 1992, we have arranged the mini-campaign of six observatories on PG 2303+243 in 2004 Sep. 5-21 for the more detailed frequency analysis of variations. The amplitudes of the most frequencies change even during the one night and some frequencies can disappear or appear in one year. Probably it is resonance effect. We have estimated 69 frequencies of pulsations and their amplitudes according the observations from 2004 and 36 frequencies and its amplitudes from 2005.

Keywords

Stars: oscillations(stars:) white dwarfsstars: individual (PG 2303+243)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S239: Convection in Astrophysics , August 2006 , pp. 382 - 384
Copyright
Copyright © International Astronomical Union 2007

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