Asteroseismology Meets Art: The beautiful échelle diagram

Since its introduction by Grec et al. (1983), the échelle diagram has proved to be an amazingly useful tool for helioand asteroseismology. We present an artistic visualization that highlights the beauty and usefulness of échelle diagrams. This artwork was produced to hang alongside other physicsthemed posters on the walls of the School of Physics at University of Sydney. The legend (left) gives details of the nine stars, which are arranged to approximately match their relative positions in the H-R diagram. All data are from Kepler except where indicated. The échelle diagrams for some stars have been shifted horizontally by a small fraction of ∆𝜈 for better visualization, as indicated in the legend. Scan the QR code below if you would like your own copy, free to use for talks or teaching materials. Please credit to: the Sun nmax =3090 µHz Dn = 135 µHz shifted by -0.2 SOHO/VIRGO data F star HD 176071/KIC 9139163 nmax =1720 µHz Dn = 81.1 µHz shifted by +0.2 (Lund et al. 2017) δScuti HD 32297 Dn = 7.06 c/d TESS data (Schneider et al. 2005; Murphy et al. in prep.) δScuti HD 99506 Dn = 7.05 c/d TESS data (Bedding et al. 2020) subgiant “Zebedee” KIC 11137075 nmax =1170 µHz Dn = 65.6 µHz shifted by -0.2 (Z. Tian et al. 2015) low-L RGB star “Pooh” KIC 4351319 nmax =387 µHz Dn = 24.6 µHz shifted by -0.08 (Di Mauro et al. 2011) Kepler-56 misaligned exoplanet host nmax =244 µHz Dn = 17.4 µHz (Huber et al. 2013; Ong 2025) core He burning KIC 5000307 (1.3M⊙) nmax =42 µHz Dn = 4.8 µHz shifted by -0.05 (Silva Aguirre et al. 2014; Y. Li et al. 2022) RGB star KIC 5006817 (1.4M⊙) nmax =145 µHz Dn = 11.6 µHz (Bedding et al. 2010; Beck et al. 2014) C.L. Crawford and T.R. Bedding (U. Sydney) Courtney Crawford & Tim Bedding Asteroseismology Meets Art: The beautiful échelle diagram https://www.physics.usyd.edu.au/~bedding/echelles/