Constraints on the Kuiper belt dust in the outer Solar System

Details Constraints on the Kuiper belt dust in the outer Solar System Constraints on the Kuiper belt dust in the outer Solar System

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..489v&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.489

Astronomy and Astrophysics

Astronomy

Scientific paper

The Edgeworth-Kuiper belt (EKB) and its presumed dusty debris are a natural reference for extrasolar debris disks. The dust in the EKB cannot be seen directly due to the strong foreground emission of the zodiacal cloud but in-situ measurements show that dust is present in the outer solar system. To model the dust distribution we take advantage of the knowledge of the parent bodies of dust, namely the transneptunian objects (TNOs). On the base of [8] we generate the dust with our collisional code to determine the radial and size distribution of the dust using a 50% ice and 50% astrosilicate composition of the particles. In addition we included a simple estimation of the influence of the three outermost planets and sublimation. To calibrate our model we used the in-situ measurements of the New Horizons dust counter [7]. It is shown that the influence of the planets and sublimation on the spectral energy distribution is very small. Our model can reproduce the in-situ measurements the New Horizons and is roughly consistent with the upper limit on the thermal emission flux from the COBE spacecraft [1].

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