250 days of SN 1987A - UBVRI photometrey at MSSSO

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Astronomical Photometry, Gravitational Collapse, Nickel Isotopes, Radioactive Isotopes, Supernova 1987A, Ubv Spectra, Magellanic Clouds, Reflecting Telescopes, Supergiant Stars

Scientific paper

The U, B, V, R, and I photometry of SN 1987A obtained at Mount Stromlo and Siding Spring Observatories during the first 250 days since core collapse is presented. These data are compared with photometry obtained at other observatories, and the global data set is used to derive the evolution of physical parameters of the photosphere of the fireball, to give estimates of the hydrogen-envelope mass, and to give an estimate for the mass of radioactive nickel formed in the explosion.

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