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Photometry and spectroscopy of the Type IIP SN 1999em from outburst to dust formation
We present photometry and spectra of the Type IIP supernova 1999em in NGC 1637 from several days after the outburst till day 642. The radioactive tail of the recovered bolometric light curve of SN 1999em indicates that the amount of the ejected 56Ni is . The Hα and He i …