The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy

S. Holmbo, M. D. Stritzinger, B. J. Shappee +26

We present an early-phase $g$-band light curve and visual-wavelength spectra of the normal Type Ia supernova (SN) 2013gy. The light curve is constructed by determining the appropri…