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Accueil > Séminaires > Archive des séminaires d’Utinam > 2013

Nuno Peixinho

Kuiper Belt Objects : Too Much Color Distracts the Spectator

mercredi 13 mars 2013, 14h

salle de conférences de l’observatoire

Nuno Peixinho , Center for Geophysics of the University of Coimbra, Astronomical Observatory of the University of Coimbra, Portugal

Résumé :

Since the discovery of the Kuiper Belt, a large reservoir of icy bodies beyond Neptune, twenty years ago, the onset of discoveries has never stopped restating this field as one of the most active areas of research in Astronomy and Planetary Sciences.

Kuiper Belt Objects (KBOs), a.k.a. Trans-Neptunian Objects (TNOs), separate in several dynamical families, and exhibit dramatically different surfaces. Identifying the interconnections between orbital parameters, dynamical families, and surface properties, is the most fundament starting point to the understanding of the reasons for this diversity and the physical processes involved. Regardless of the growing knowledge of surface spectra and albedos for the brighter and larger of these objects, one cannot see the forest for the trees. It seems that the smaller objects carry the best kept secrets and multicolor photometry is the only statistically relevant characterization of their surface properties. As always… there is more than meets the eye.