ASTEROSEISMOLOGY OF THE KEPLER FIELD DBV WHITE DWARF. IT IS A HOT ONE
- Chemistry, Physics, and Astronomy Department, Georgia College and State University, Milledgeville, GA 31061 (United States)
We present an asteroseismic analysis of the helium atmosphere white dwarf (a DBV) recently found in the field of view of the Kepler satellite. We analyze the five-mode pulsation spectrum that was produced based on one month of short-cadence Kepler data. The pulsational characteristics of the star and the asteroseismic analysis strongly suggest that the star is hotter (29,200 K) than the 24,900 K suggested by model fits to the low signal-to-noise survey spectrum of the object. This result has profound and exciting implications for tests of the standard model of particle physics. Hot DBVs are expected to lose over half of their energy through the emission of plasmon neutrinos. Continuous monitoring of the star with the Kepler satellite over the course of 3-5 years is not only very likely to yield more modes to help constrain the asteroseismic fits, but also to allow us to obtain a rate of change of any stable mode and therefore measure the emission of plasmon neutrinos.
- OSTI ID:
- 22047350
- Journal Information:
- Astrophysical Journal Letters, Vol. 742, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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