Infrared Photometry of Supernova 1993J in M81

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present near-infrared photometry of supernova (SN) 1993J in M81 based on wide-field ( 30.('}1x40.({')) 1) J band imaging on April and May in 1993. The spectral energy distribution of SN 1993J can't be fitted well to single component blackbody spectrum after the second maximum of the light curve. The quasi-bolometric luminosity of SN 1993J was derived by integrating its flux from U to J band. The fraction of the quasi-bolometric luminosity emitted in J band increased twice through the second maximum.

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