Binary and Multiple Systems Binary and Multiple Systems

Details Binary and Multiple Systems Binary and Multiple Systems Binary and Multiple Systems Binary and Multiple Systems

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p52a..07c&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P52A-07

Mathematics

Logic

[6000] Planetary Sciences: Comets And Small Bodies, [6206] Planetary Sciences: Solar System Objects / Asteroids: Satellites

Scientific paper

Recent observational advances have led to the realization that binary or multiple systems are common in small body populations from the near-Earth objects through the main belt and out to the Kuiper Belt. Understanding the formation processes of such systems is critical to understanding the collisional and dynamical evolution of small body systems, including even dwarf planets. Binary and multiple systems provide a means of determining critical physical properties (masses, densities, and rotations) with greater ease and higher precision than is available for single objects. Binaries and multiples provide a natural laboratory for dynamical investigations and may exhibit unique geologic processes such as mass transfer or even accretion disks. Missions to many classes of planetary bodies - asteroids, Trojans, TNOs, dwarf planets - can offer enhanced science return if they target binary or multiple systems. Significant resources should be dedicated to investigations using large aperture facilities with advanced instrumentation. Fundamental questions remain to be answered: does the prevalence of binary and multiple systems differ between populations (e.g., NEOs versus main belt, Trojans versus TNOs)? Are the fundamental physical characteristics of binaries, which reflect their formation mechanisms and later evolution, different in these populations (their spin periods versus mutual orbit periods, their orbital separations versus sizes)? Are binary and multiple systems more likely to be found in asteroid families? Are binary systems more likely to contain rubble pile objects? Do binary systems evolve into single bodies, or vice versa, and how might that happen?

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