2024-03-28T08:11:42Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1675392023-02-02T10:56:58Zcom_10261_97com_10261_4col_10261_350
DIGITAL.CSIC
author
Devogèle, M.
author
Tanga, P.
author
Bendjoya, P.
author
Rivet, J.P.
author
Surdej, J.
author
Hanuš, J.
author
Abe, L.
author
Antonini, P.
author
Artola, R.A.
author
Audejean, M.
author
Behrend, R.
author
Berski, F.
author
Bosch, J.G.
author
Bronikowska, M.
author
Carbognani, A.
author
Char, F.
author
Kim, M.J.
author
Choi, Y.J.
author
Colazo, C.A.
author
Coloma, J.
author
Coward, D.
author
Durkee, R.
author
Erece, O.
author
Forne, E.
author
Hickson, P.
author
Hirsch, R.
author
Horbowicz, J.
author
Kamiński, K.
author
Kankiewicz, P.
author
Kaplan, M.
author
Kwiatkowski, T.
author
Konstanciak, I.
author
Kruszewki, A.
author
Kudak, V.
author
Manzini, F.
author
Moon, H.K.
author
Marciniak, A.
author
Murawiecka, M.
author
Nadolny, J.
author
Ogłoza, W.
author
Ortiz, José Luis
author
Oszkiewicz, D.
author
Pallares, H.
author
Peixinho, N.
author
Poncy, R.
author
Reyes, F.
author
de los Reyes, J.A.
author
Santana-Ros, T.
author
Sobkowiak, K.
author
Pastor, S.
funder
Natural Sciences and Engineering Research Council of Canada
funder
European Commission
funder
Fundação para a Ciência e a Tecnologia (Portugal)
funder
National Science Centre (Poland)
2018-07-11T07:32:35Z
2018-07-11T07:32:35Z
2017
Astronomy and Astrophysics 607: A119 (2017)
http://hdl.handle.net/10261/167539
10.1051/0004-6361/201630104
http://dx.doi.org/10.13039/501100000038http://dx.doi.org/10.13039/501100004281http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/501100001871
Context. 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 convergence 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.© 2017 ESO.
eng
openAccess
Techniques: photometric
Methods: observational
Minor planets, asteroids: general
Shape and spin determination of Barbarian asteroids
artículo
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URL
https://digital.csic.es/bitstream/10261/167539/1/IAA_2017_aa30104-16.pdf
File
MD5
5db07d4644b8a18b6cd84c310e9c2413
2213332
application/pdf
IAA_2017_aa30104-16.pdf