Limits from the Hubble Space Telescope on a Point Source in SN 1987A

@article{Graves2005LimitsFT,
  title={Limits from the Hubble Space Telescope on a Point Source in SN 1987A},
  author={Genevieve J. M. Graves and Peter M. Challis and Roger A. Chevalier and Arlin P. S. Crotts and Alexei V. Filippenko and Claes Fransson and Peter M. Garnavich and Robert P. Kirshner and Weidong Li and Peter Lundqvist and Richard McCray and Nino Panagia and Mark M. Phillips and Chun Shing Jason Pun and Brian P. Schmidt and George Sonneborn and Nicholas B. Suntzeff and Lifan Wang and J. Craig Wheeler},
  journal={The Astrophysical Journal},
  year={2005},
  volume={629},
  pages={944 - 959}
}
We observed supernova 1987A (SN 1987A) with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST) in 1999 September and again with the Advanced Camera for Surveys (ACS) on the HST in 2003 November. Our spectral observations cover ultraviolet (UV) and optical wavelengths from 1140 to 10266 Å, and our imaging observations cover UV and optical wavelengths from 2900 to 9650 Å. No point source is observed in the remnant. We obtain a limiting flux of Fopt ≤ 1.6 × 10-14… 

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