Among L-type asteroids, a peculiar category of objects exists: it includes the so-called "Barbarians", known to have very specific features in the phasepolarization curve. Such objects are thought to contain a high percentage of Calcium-Aluminumrich- Inclusions, responsible of a spinel absorption feature in the near infrared (around 2.1-2.2 μm). However, Barbarians are also peculiar in some other physical properties: in particular they seem to have unusually high rotation periods, and large amplitude light curves. We started a campaign of NIR spectroscopy and photometry to shed a light on such properties and to compare the Barbarians to the other objects belonging to the same taxonomic type.
European Planetary Science Congress
- Pub Date:
- October 2015