Image Details
Caption: Figure 5.
Mean Tcond slope (﹩\frac{\partial [{\rm{X}}/{\rm{Fe}}]}{\partial {T}_{{\rm{cond}}}}﹩) as a function of mean Teff and colored by mean ﹩\mathrm{log}g﹩ for stars with the same [Fe/H] and [α/Fe] consistent with the Sun with B18 as circles (only one symbol shown since these stars occupy one bin), GALAH as squares, R24 as diamonds, and APOGEE as stars. There is a slight negative gradient in Tcond slope with Teff for each dataset (-3 ± 1E-7 dex/K2) and with ﹩\mathrm{log}g﹩ (-1 ± 3E-4 K2). Hotter and lower ﹩\mathrm{log}g﹩ stars tend to share ﹩\frac{\partial [{\rm{X}}/{\rm{Fe}}]}{\partial {T}_{{\rm{cond}}}}﹩ = 0 than stars with similar Teff and ﹩\mathrm{log}g﹩ as the Sun. The APOGEE stars are systemically offset from the rest of the surveys, given their difference in kinematic selection as shown in Figure 4.
© 2026. The Author(s). Published by the American Astronomical Society.