Lsst As A New Probe Of The Oort Cloud

Details Lsst As A New Probe Of The Oort Cloud Lsst As A New Probe Of The Oort Cloud

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933402s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #334.02

Astronomy and Astrophysics

Astronomy

Scientific paper

The current catalog of long-period comets (LPCs) is overwhelmingly dominated by cometary orbits passing within a few AU of the Sun. By the time LPCs reach such low perihelia, it is very likely their orbital semimajor axes have already been strongly modified by planetary perturbations (Kaib & Quinn 2009). Consequently, the present sample of LPCs offers little constraint on the true orbital structure of the Oort Cloud. Detecting LPCs with larger perihelia will place significantly better constraints on Oort Cloud structure, and LSST offers the best prospect to build such a cometary catalog in the near future. Using numerically simulated comet orbits coupled with observationally motivated models for LPC magnitudes and the LSST observational cadence (Solontoi et al. 2011), we estimate the perihelion range that LSST will be able to efficiently detect long-period comets.

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