Background-corrected PSD of KIC 6975038 obtained from Kepler data using the background model of Kallinger et al. (2014) (for details, see Coppée et al. 2024). Radial modes are indicated by the gray shaded area, dipole modes by the blue area, and quadrupole modes by the reddish area. In addition, we show the trapped fraction as a function of frequency computed for a stellar model with M_* = 1.3 M_⊙, Z_init = 0.02, ν_max ≈ 128 μHz, and B_cen ≈ 6.23 MG (see Sect. 4.3) for both the dipole modes (in blue) and quadrupole modes (in red).