Fine Grid Asteroseismology of R548 and G117-B15A

Details Fine Grid Asteroseismology of R548 and G117-B15A Fine Grid Asteroseismology of R548 and G117-B15A

2007-11-13

arxiv.org/abs/0711.2039v1

Astronomy and Astrophysics

Astrophysics

The first author would love to hear from you if you found this paper interesting. email agnes@astro.as.utexas.edu

Scientific paper

10.1086/527287

We now have a good measurement of the cooling rate of G117-B15A. In the near future, we will have equally well determined cooling rates for other pulsating white dwarfs, including R548. The ability to measure their cooling rates offers us a unique way to study weakly interacting particles that would contribute to their cooling. Working toward that goal, we perform a careful asteroseismological analysis of G117-B15A and R548. We study them side by side because they have similar observed properties. We carry out a systematic, fine grid search for best fit models to the observed period spectra of those stars. We freely vary 4 parameters: the effective temperature, the stellar mass, the helium layer mass, and the hydrogen layer mass. We identify and quantify a number of uncertainties associated with our models. Based on the results of that analysis and fits to the periods observed in R548 and G117-B15A, we clearly define the regions of the 4 dimensional parameter space ocuppied by the best fit models.

Affiliated with

Also associated with

No associations

Rating

Fine Grid Asteroseismology of R548 and G117-B15A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fine Grid Asteroseismology of R548 and G117-B15A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine Grid Asteroseismology of R548 and G117-B15A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-271685