The location of Oort Cloud comets C/2011 L4 Panstarrs and C/2012 S1 ISON on a comet evolutionary diagram

@article{Ferrin2013TheLO,
  title={The location of Oort Cloud comets C/2011 L4 Panstarrs and C/2012 S1 ISON on a comet evolutionary diagram},
  author={Ignacio Ferr'in},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2013},
  volume={442},
  pages={1731-1754}
}
  • I. Ferr'in
  • Published 20 June 2013
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
The secular light-curves (SLCs) of comets C/2011 L4 Panstarrs and C/2012 S1 ISON are plotted. The brightness of both comets increased steeply after discovery but decreased sharply at ∼4–5 au, a characteristic of Oort Cloud cometary light-curves referred to as a slope discontinuity event (SDE). After the SDE, the SLC of C/2011 L4 continued to increase and had a surge near perihelion. The SLC of comet C/2012 S1 ISON, on the other hand, is very unusual and exhibits a SDE plus a near-standstill… 

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