Tootfinder

The main reason for Fraserburgh is the excellent lighthouse museum there. Perfect visit for us: lovely landscape, a bunch of lenses, and a climb up the old lighthouse itself.

Asteroseismic investigation of HD 140283: The Methuselah star
M. S. Lundkvist, J. R. Larsen, Y. Li, M. L. Winther, T. R. Bedding, H. Kjeldsen, T. R. White, M. B. Nielsen, G. Buldgen, C. Guillaume, A. L. Stokholm, D. Huber, J. L. R{\o}rsted, P. Mani, F. Grundahl
https://arxiv.org/abs/2510.11532

Asteroseismic investigation of HD 140283: The Methuselah star
HD 140283 is a well-studied metal-poor subgiant and a Gaia benchmark star, often used for testing stellar models due to its proximity, brightness, and low metallicity ([Fe/H] = -2.3 dex). Here we present the first asteroseismic analysis of HD 140283, providing improved constraints on its fundamental properties. The star was observed by TESS in 20-second cadence during Sector 51. We extracted a custom light curve and performed a frequency analysis, revealing a rich spectrum of solar-like osc…