Extended Data Fig. 4: Stellar models for KIC 8367834 within 3σ of the classical constraints, colour-coded with probability using constraints from parallax, Teff, metallicity, and oscillation frequencies.
From: Discovery of post-mass-transfer helium-burning red giants using asteroseismology

a, The Hertzsprung–Russell diagram. b, The mass–radius diagram. c, The seismic quantity \({\nu }_{\max }^{0.75}/{{\Delta }}\nu\) versus \({\nu }_{\max }\). d, Mass versus \({\nu }_{\max }\). The black boxes show the 1.5σ confidence regions, either directly from observations (L, Teff, \({\nu }_{\max }\), Δν) or from the scaling relations (M, R).