Shape and spin determination of Barbarian asteroids

DEVOGELE, M.; TANGA, P.; BENDJOYA, P.; RIVET, J.; SURDEJ, J.; HANUS, J.; ABE, L.; ANTONINI, P.; ARTOLA, R.; AUDEJEAN, M.; Behrend, R.; BERSKI, F.; BOSCH, J.; BRONIKOWSKA, M.; CARBOGNANI, A.; Char, F.; Kim, M.; Choi, Y.; COLAZO, C.; COLOMA, J.; COWARD, D.; DURKEE, R.; ERECE, O.; FORNE, E.; Hickson, P.; HIRSCH, R.; HORBOWICZ, J.; KAMINSKI, K.; KANKIEWICZ, P.; KAPLAN, MURAT; KWIATKOWSKI, T.; KONSTANCIAK, I.; KRUSZEWKI, A.; KUDAK, V.; MANZINI, F.; Moon, H.; MARCINIAK, A.; MURAWIECKA, M.; Nadolny, J.; OGLOZA, W.; ORTIZ, J.; OSZKIEWICZ, D.; PALLARES, H.; Peixinho, N.; PONCY, R.; REYES, F.; DE LOS REYES, J.; SANTANA-ROS, T.; SOBKOWIAK, K.; PASTOR, S.; PILCHER, F.; QUINONES, M.; TRELA, P.; VERNET, D.

doi:10.1051/0004-6361/201630104

Shape and spin determination of Barbarian asteroids

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DEVOGELE M., TANGA P., BENDJOYA P., RIVET J. P., SURDEJ J., HANUS J., ...More

ASTRONOMY & ASTROPHYSICS, vol.607, 2017 (SCI-Expanded)

Publication Type: Article / Article
Volume: 607
Publication Date: 2017
Doi Number: 10.1051/0004-6361/201630104
Journal Name: ASTRONOMY & ASTROPHYSICS
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Keywords: techniques: photometric, minor planets, asteroids: general, methods: observational, MAIN-BELT ASTEROIDS, LIGHTCURVE INVERSION, PHOTOELECTRIC PHOTOMETRY, POLARIMETRIC BEHAVIOR, OPTIMIZATION METHODS, NONCONVEX, PERIODS, MODELS
Akdeniz University Affiliated: Yes

Abstract

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.