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2 results

  • Optical observations of supernova 2012aw

  • Subhash Bose, Brijesh Kumar, Firoza Sutaria, Rupak Roy, Brajesh Kumar, Vijay K. Bhatt, Sayan Chakraborti
  • Journal:
    Proceedings of the International Astronomical Union / Volume 9 / Issue S296 / January 2013
    Published online by Cambridge University Press:
    29 January 2014, pp. 334-335
    Print publication:
    January 2013
    • Article
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  • We present optical UBVRI photometric and low-resolution spectroscopic follow-up observations of a type II SN 2012aw in a nearby (~10 Mpc) galaxy M95 during 4 to 270 days post-explosion. The evolution characteristics of optical brightness and color are found to have striking similarity with the archetypal type IIP SN 1999em. The mid-plateau MV is −16.7 mag and the ejected nickel mass is ~0.06 M⊙. The presence and evolution of optical spectral features during 7d to 104d are also similar to SN 1999em as well as other normal type IIP events. The mid-plateau photospheric velocity is around 4200 km s−1 which is same as that of SN 2004et at similar phases, indicating similar energy of explosion i.e. 2 × 1051 erg s−1.