In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1

Details In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1 In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf...84g&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.84

Computer Science

Scientific paper

The Deep Impact spacecraft flew by comet 103P/Hartley 2 on November 4, 2010 (EPOXI mission) [1] and comet 9P/Tempel 1 on July, 4, 2005 (Deep Impact mission) [2]. During the two flybys, spatially resolved infrared (1.05-4.85 μm) spectra of the surface of the nucleus were acquired by the HRIIR instrument. The analysis of these two datasets, obtained by the same instrument, offer a unique opportunity to understand, compare and contrast the surface thermal properties of these two comets. For this paper, we use two hyperspectral cubes with a spatial resolution of 25 m/pixel for 103P/Hartley 2 and 160 m/pixel for 9P/Tempel 1. We present and discuss the temperature maps derived from these data. The nucleus thermal emission at all resolved spatial scales differs from that of a grey body with a constant infrared emissivity of 0.9-1.0, the discrepancy being more important for larger incident angles. This results from projected shadows, which play an important role as expected for a rough surface, and we indeed demonstrate that the nucleus thermal emission can be well reproduced using a rough, fractal, terrain model.

Affiliated with

Also associated with

No associations

Rating

In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-situ thermal observations of the nuclei of comets 103P/Hartley 2 and 9P/Tempel 1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1655526