Study of unconfirmed supernovae
  We study the nature of 39 unconfirmed supernovae (SNe) from the sky area covered by Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), using available photometric and imaging data and intensive literature search. We confirm that 21 objects are real SNe, 2 are Galactic stars, 4 are probable SNe and 12 remain unconfirmed events. The probable types for 4 objects are suggested: 3 SNe are of probable type Ia and SN 1953H is probable type II SN. In addition, we identify the host galaxy of SN 1976N and correct the offsets/coordinates of SNe 1958E, 1972F, and 1976N. 
L. S. Aramyan, A. R. Petrosian, A. A. Hakobyan, G. A. Mamon, D. Kunth,   M. Turatto, V. Zh. Adibekyan, T. A. Nazaryan
astro-ph.HE astro-ph.SR