Abstract Doubly eclipsing quadruple systems provide an excellent opportunity to analyse multiple stellar systems and their evolutionary processes. However, their fundamental parameters are derived in only a few cases. We conduct new observations and study ten doubly eclipsing 2+2 candidates in the Northern sky. The new ground-based measurements are combined with TESS and archival data from available additional surveys (ASAS-SN, ZTF, and SuperWASP). We detrend and disentangle the light curves to derive precise minima timings. Further modelling is made using the PHOEBE 0.32 software package. Orbital period analysis using the O − C diagrams reveals seven candidates as newly confirmed quadruple systems. We identify ASASSN-V J020003.56+452605.2 as a blend of two independent binaries. The spectral analysis is carried out for ASASSN-V J233336.79+615012.0, and all four components and their radial velocities are measured from high-resolution spectra. Notably, 2MASS J04380244+5543535 is confirmed as a quadruple system with an additional detected cyclic O − C variations.
Kolář et al. (Mon,) studied this question.