Decrease in the orbital period of dwarf nova OY Carinae

  title={Decrease in the orbital period of dwarf nova OY Carinae},
  author={John G. Greenhill and Kristina M. Hill and Stefan W. Dieters and Kurt S. Fienberg and Marybeth Howlett and Awm Anthonie Meijers and Alistair Munro and Carsten Senkbeil},
  • John G. Greenhill, Kristina M. Hill, +5 authors Carsten Senkbeil
  • Published 2006
  • Physics
  • We have measured the orbital light curve of dwarf nova OY Carinae on 8 separate nights between 1997 September and 2005 December. The measurements were made in white light using CCD photometers on the Mt Canopus 1 m telescope. The time of eclipse in 2005 December was 168±5 s earlier than that predicted by the Wood et al.(1989) ephemeris. Using the times of eclipse from our measurements and the compilation of published measurements by Pratt et al. (1999) we find that the observational data are… CONTINUE READING