A Geometric Determination of the Distance to SN 1987A and the LMC

  title={A Geometric Determination of the Distance to SN 1987A and the LMC},
  author={Nino Panagia},
  • N. Panagia
  • Published 15 September 2003
  • Physics, Mathematics
Using the definitive reductions of the IUE light curves by [15] and an extensive set of HST images of SN 1987A we have repeated and improved our original analysis [8, 9] to derive a better determination of the distance to the supernova. In this way we have obtained an absolute size of the ring R abs = (6.23 ± 0.08) × 1017 cm and an angular size R″ = 808 ± 17 mas, which give a distance to the supernova d(SN1987A) = 51.4 ± 1.2 kpc and a distance modulus (m − M)SN1987A = 18.55 ± 0.05. Allowing for… 
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