Image Details
Caption: Figure 5.
R-band photometry of the 12 flash-spectroscopy events and two (out of the three) events showing neither FI signatures nor a BF continuum in their spectra <2 days after explosion. The light curve of the highly reddened iPTF14ayo is very faint; it is omitted for clarity. Measurements from the same night have been averaged into a single data point. Error bars are omitted for clarity and are available with the full photometry in the electronic table.
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