Reference : Shape and spin determination of Barbarian asteroids
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/213192
Shape and spin determination of Barbarian asteroids
English
[en] Détermination de la forme et du pole de rotation d'astéroïde Barbarians
Devogele, Maxime mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Tanga, P. [> >]
Bendjoya, P. [> >]
Rivet, J. P. [> >]
Surdej, Jean mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Hanus, J. [> >]
Pilcher, F. [> >]
Quiñones, M. C. [> >]
Trela, P. [> >]
Vernet, D. [> >]
Abe, L. [> >]
Antonini, P. [> >]
Artola, R. A. [> >]
Audejean, M. [> >]
Behrend, R. [> >]
Berski, F. [> >]
Bosch, J. G. [> >]
Bronikowska, M. [> >]
Carbognani, A. [> >]
Char, F. [> >]
Kim, M.-J. [> >]
Choi, Y.-J. [> >]
Colazo, C. A. [> >]
Coloma, J. [> >]
Coward, D. [> >]
Durkee, R. [> >]
Erece, O. [> >]
Forne, E. [> >]
Hickson, P. [> >]
Hirsch, R. [> >]
Horbowicz, J. [> >]
Kami ski, K. [> >]
Kankiewicz, P. [> >]
Kaplan, M. [> >]
Kwiatkowski, T. [> >]
Konstanciak, I. [> >]
Kruszewki, A. [> >]
Kudak, V. [> >]
Manzini, F. [> >]
Moon, H.-K. [> >]
Marciniak, A. [> >]
Murawiecka, M. [> >]
Nadolny, J. [> >]
Ogloza, W. [> >]
Ortiz, J. L. [> >]
Oszkiewicz, D. [> >]
Pallares, H. [> >]
Peixinho, N. [> >]
Poncy, R. [> >]
Reyes, F. [> >]
de los Reyes, J. A. [> >]
Santana-Ros, T. [> >]
Sobkowiak, K. [> >]
Pastor, S. [> >]
25-Jul-2017
Astronomy and Astrophysics
EDP Sciences
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] Astrophysics - Earth and Planetary Astrophysics
[en] The so-called Barbarian asteroids share peculiar, but common polarimetric properties, probably related to both their shape and composition. They are named after (234) Barbara, the first on which such properties were identified. As has been suggested, large scale topographic features could play a role in the polarimetric response, if the shapes of Barbarians are particularly irregular and present a variety of scattering/incidence angles. This idea is supported by the shape of (234) Barbara, that appears to be deeply excavated by wide concave areas revealed by photometry and stellar occultations. Aims. With these motivations, we started an observation campaign to characterise the shape and rotation properties of Small Main- Belt Asteroid Spectroscopic Survey (SMASS) type L and Ld asteroids. As many of them show long rotation periods, we activated a worldwide network of observers to obtain a dense temporal coverage. Methods. We used light-curve inversion technique in order to determine the sidereal rotation periods of 15 asteroids and the con- vergence to a stable shape and pole coordinates for 8 of them. By using available data from occultations, we are able to scale some shapes to an absolute size. We also study the rotation periods of our sample looking for confirmation of the suspected abundance of asteroids with long rotation periods. Results. Our results show that the shape models of our sample do not seem to have peculiar properties with respect to asteroids with similar size, while an excess of slow rotators is most probably confirmed.
http://hdl.handle.net/2268/213192
10.1051/0004-6361/201630104

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Barbarians.pdfAuthor preprint10.7 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.