Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pasj...59l..25s&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.59, No.4, pp.L25--L28
Astronomy and Astrophysics
Astronomy
7
Comets: Individual (4P/Faye), Meteors, Meteoroids
Scientific paper
The longest dust trail among those so detected at optical wavelengths was found along the orbit of 4P/Faye in the 2006 return. It extended as long as 10D in the backward direction. The surface brightness increases monotonically with the distance from the nucleus between 0D.5 and 3D, but decreases slowly beyond 4D. The observed brightnesses of the dust trail and the tail are reasonably explained by our dust ejection model. The model shows that the dust trail is composed of cm-sized particles ejected during previous returns, and the derived power indices of the size distribution function of dust particles ejected from the nucleus (-3.5) and those remaining in the trail (-1.9) have a big difference for each other. The averaged mass-loss rate (20 kg s-1) derived from the model is comparable to those of known IRAS dust trail comets.
Ishiguro Masateru
Miura Naoya
Nakada Yoshikazu
Pyo Jeonghyun
Sarugaku Yuki
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