SN 2018hna is a 1987A-like Type II supernova whose early light curves show the cooling emission after shock breakout, indicating a compact blue supergiant progenitor about 50 solar radii across.
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SN 2018hna: 1987A-like supernova with a signature of shock breakout
SN 2018hna is a 1987A-like Type II supernova whose early light curves show the cooling emission after shock breakout, indicating a compact blue supergiant progenitor about 50 solar radii across.