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We present an analysis of the height distributions of the different types ofsupernovae (SNe) from the plane of their host galaxies. We use a well-definedsample of 102 nearby SNe appeared inside high-inclined (i > 85 deg),morphologically non-disturbed S0-Sd host galaxies from the Sloan Digital SkySurvey. For the first time, we show that in all the subsamples of spirals, thevertical distribution of core-collapse (CC) SNe is about twice closer to theplane of host disc than the distribution of SNe Ia. In Sb-Sc hosts, theexponential scale height of CC SNe is consistent with those of the youngerstellar population in the Milky Way (MW) thin disc, while the scale height ofSNe Ia is consistent with those of the old population in the MW thick disc. Weshow that the ratio of scale lengths to scale heights of the distribution of CCSNe is consistent with those of the resolved young stars with ages from ~ 10Myr up to ~ 100 Myr in nearby edge-on galaxies and the unresolved stellarpopulation of extragalactic thin discs. The corresponding ratio for SNe Ia isconsistent with the same ratios of the two populations of resolved stars withages from a few 100 Myr up to a few Gyr and from a few Gyr up to ~ 10 Gyr, aswell as with the unresolved population of the thick disc. These results can beexplained considering the age-scale height relation of the distribution ofstellar population and the mean age difference between Type Ia and CC SNeprogenitors.

Supernovae and their host galaxies - V. The vertical distribution of supernovae in disc galaxies