Light curve patterns and seismology of a white dwarf with complex pulsation

Zs Bogná, M. Paparó, P. A. Bradley, A. Bischoff-Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ZZ Ceti star KUV 02464+3239 was observed over a whole season at the mountain station of Konkoly Observatory. A rigorous frequency analysis revealed 6 certain periods between 619 and 1250 seconds, with no shorter period modes present. We use the observed periods, published effective temperature and surface gravity, along with the model grid code of Bischoff-Kim, Montgomery and Winget [1] to perform a seismological analysis. We find acceptable model fits with masses between 0.60 and 0.70 M⊙. The hydrogen layer mass of the acceptable models are almost always between 10-4 and 10-6 M*. In addition to our seismological results, we also show our analysis of individual light curve segments. Considering the non-sinusoidal shape of the light curve and the Fourier spectra of segments showing large amplitude variations, the importance of non-linear effects in the pulsation is clearly seen.

Original languageEnglish (US)
Title of host publicationStellar Pulsation
Subtitle of host publicationChallenges for Theory and Observation - Proceedings of the International Conference
Pages625-629
Number of pages5
DOIs
Publication statusPublished - Dec 1 2009
EventInternational Conference on Stellar Pulsation: Challenges for Theory and Observation - Santa Fe, NM, United States
Duration: May 31 2009Jun 5 2009

Publication series

NameAIP Conference Proceedings
Volume1170
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Conference on Stellar Pulsation: Challenges for Theory and Observation
CountryUnited States
CitySanta Fe, NM
Period5/31/096/5/09

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

Cite this

Bogná, Z., Paparó, M., Bradley, P. A., & Bischoff-Kim, A. (2009). Light curve patterns and seismology of a white dwarf with complex pulsation. In Stellar Pulsation: Challenges for Theory and Observation - Proceedings of the International Conference (pp. 625-629). (AIP Conference Proceedings; Vol. 1170). https://doi.org/10.1063/1.3246574