SN 2020sck: Deflagration in a Carbon-Oxygen White Dwarf

We present optical UBVRI photometry and low-to-medium resolution spectroscopic observations of type Iax SN 2020sck spanning -5.5 d to +67 from maximum light in the B-band. From photometric analysis we find $\Delta m_{\rm{B}}$(15) = 2.03$\pm$0.05 mag $M_{\rm{B}}$=-17.81$\pm$0.22 mag. Radiation diffusion model fit quasi-bolometric curve indicates 0.13$\pm$0.02 $M_{\odot}$ $^{56}$Ni 0.34 $M_{\rm \odot}$ ejecta are synthesized explosion. Comparing observed with angle-averaged bolometric three-dimensional pure deflagration explosion $M_{\rm{ch}}$ carbon-oxygen white dwarf, agreement a which 0.16 0.37 is formed. By comparing +1.4 day spectrum synthetic generated using SYN++, absorption features due C II, III O I. These unburned materials indicate C-O dwarf. One dimensional radiative transfer modeling spectra TARDIS shows higher density near photosphere steep decrease outer layers an composition dominated mostly by C, O, Si, Fe, Ni. The star formation rate host galaxy computed luminosity H$\alpha$ ($\lambda$6563) line 0.09 yr$^{-1}$ indicating relatively young stellar environment.