Journal Article

Location of upper borders of cavities containing dust and gas under pressure in comets

Sergei I. Ipatov

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 423, issue 4, pages 3474-3477
Published in print July 2012 | ISSN: 0035-8711
Published online July 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21144.x
Location of upper borders of cavities containing dust and gas under pressure in comets

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The distance between the pre-impact surface of Comet 9P/Tempel 1 and the upper border of the largest cavity excavated during the ejection of material after the collision of the impact module of the Deep Impact (DI) spacecraft with the comet is estimated to be about 5–6 m if the diameter of the DI transient crater was about 150–200 m. The estimated distance is 4 m if the diameter was 100 m. This result suggests that cavities containing dust and gas under pressure and located a few metres below the surfaces of comets can be common.

Keywords: comets: general

Journal Article.  3683 words. 

Subjects: Astronomy and Astrophysics

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