Optical and Near-IR Observations of the Faint and Fast 2008ha-like Supernova 2010ae

摘要: A comprehensive set of optical and near-infrared (NIR) photometry spectroscopy is presented for the faint fast 2008ha-like supernova (SN) 2010ae. Contingent on adopted value host extinction, SN 2010ae reached a peak brightness -13.8 > M_V -15.3 mag, while modeling UVOIR light curve suggests it produced 0.003--0.007 M_sun (56)Ni, ejected 0.30--0.60 material, had an explosion energy 0.04--0.30x10^51 erg. The values these parameters are similar to peculiar 2008ha --for which we also present previously unpublished early phase NIR curves-- places two transients at end 2002cx-like population. Detailed inspection post maximum spectroscopic sequence indicates presence multitude spectral features, identified through SYNAPPS be mainly attributed Co II. Comparison with collection published spectra other SNe, reveals that II footprint ubiquitous this subclass transients, providing link Type Ia SNe. visual-wavelength spectrum obtained +252 days past shows striking resemblance epoch 2002cx. However, subtle differences in strength ratio calcium emission as well diversity among SNe range physical conditions ejecta, highlighting heterogeneous nature class transients.