Near-infrared mapping of comet 73P/Schwassmann-Wachmann 3-B

Details Near-infrared mapping of comet 73P/Schwassmann-Wachmann 3-B Near-infrared mapping of comet 73P/Schwassmann-Wachmann 3-B

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.384..630r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 384, Issue 2, pp. 630-636.

Astronomy and Astrophysics

Astronomy

1

Comets: Individual: 73P/Schwassmann, Wachmann 3, Infrared: Solar System

Scientific paper

Comet 73P/Schwassmann-Wachmann 3 made a close approach to Earth in the first half of 2006, during which its nucleus was observed to disintegrate into 80 or more fragments. We report the results of infrared mapping of fragment B on May 12, during which images were obtained in J, H and K'. The observations indicate the presence of strong variations in colour as a function of position within the comet, with the largest indices (J - H ≅ 0.37 mag, H - K' ≅ 0.5 mag) occurring close to the nucleus. This may be explainable in terms of scattering by grains having a mixture of sizes, and the influence of grain thermal emission within the K' photometric band. There is a strong possibility that increased smaller grain scattering within the tail may arise as a result of the disintegration of aggregate particles.

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