Poster abstract details

Modelling auto covariance spectra of bright solar-like stars
Karoff C.

Abstract

Analysis of acoustic spectra of solar-like stars normally suffers from
some degree of subjectivity due to the lack of a consistent way of
selecting and tacking the oscillation modes. By modelling the auto
covariance spectra of the stellar acoustic spectra instead of just the
acoustic spectra these problems are overcome by not having to model the
individual oscillation modes themselves, but their auto covariance
spectra.
We have modelled the auto covariance spectra of a large catalogue of
high-precision ground-based radial-velocity observations of
bright solar-like stars in order to obtain reliable and consistent
measurements of the large and small frequency separations in these
stars. We use these measurements to provide estimates of the radii,
masses and ages of these stars with consistent uncertainties.