- · Electronic On-line Article (HTML)
- · Full Printable Article (PDF/Postscript)
- · Scanned Article (GIF)
- · Table of Contents
- · References in the Article
- · Citations to the Article (8) (Citation History)
- · Refereed Citations to the Article
- · Also-Read Articles (Reads History)
- · Translate This Page
|Title:||Connections between asteroids and cometary nuclei|
|Publication:||Asteroids, Comets, Meteors, Proceedings of the 229th Symposium of the International Astronomical Union held in Búzios, Rio de Janeiro, Brasil August 7-12, 2005, Edited by D. Lazzaro, S. Ferraz-Mello & J.A. Fernández. Cambridge: Cambridge University Press, 2006., pp.67-96|
We review the recent progress in the exploration of the interrelations
between primitive small bodies of the solar system which are preserved
the pristine material in their interior: cometary nuclei, Transneptunian
Objects, Centaurs, and primitive asteroids, and they are considered as
primordial objects. In addition, we discuss the properties of the
asteroid-comet transition objects which have really enigmatic behavior.
The comets have most primitive, accessible material in the solar system
but we do not know what is hidden below the evolved surface layers.
Comets must become dormant but we do not know whether the ice is
exhausted or sublimation is inhibited (blocked by quenching mechanisms).
There must be many dormant comets masquerading as asteroids but we do
not know to identify these bodies unless via serendipitous discovery
observations. Indeed, there are some asteroids which temporarily show
comet-like activity. These are among the Damocloids (C/2001 OG108
(LONEOS)), main belt asteroids (7968 Elst-Pizarro = 133P/E-P) and
Near-Earth objects (4015 Wilson-Harrington = 107P/W-H). The important
questions are: where is the pristine material in the cometary nuclei and
in the asteroid-comet transition objects, do comets lose their ice or
seal it in? Both the large survey projects and in-situ space missions
will help to answer these questions in the near future.
More Article Retrieval Options
HELP for Article Retrieval