New supernova candidates from the SDSS-DR7 spectral survey

Abstract

This letter presents 25 supernova candidates discovered from SDSS-DR7 by using our dedicated method, called Sample Decrease. Ten of them have been confirmed by other research groups, while the remaining 15, including 14 Type Ia and one Type II, are first discovered based on Supernova Identification analysis. The results demonstrate that our method is reliable. The description of the method and some detailed spectral analysis procedures are also presented. © 2009 National Astronomical Observatories of Chinese Academy of Sciences and IOP Publishing Ltd..