Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/80786
Title: Shape and spin determination of Barbarian asteroids
Authors: M. Devogèle 
P. Tanga 
P. Bendjoya 
J. P. Rivet 
J. Surdej 
J. Hanus 
L. Abe 
P. Antonini 
R. A. Artola 
M. Audejean 
R. Behrend 
F. Berski 
J. G. Bosch 
M. Bronikowska 
A. Carbognani 
F. Char 
M. -J. Kim 
Y. -J. Choi 
C. A. Colazo 
J. Coloma 
D. Coward 
R. Durkee 
O. Erece 
E. Forne 
P. Hickson 
R. Hirsch 
J. Horbowicz 
K. Kamiński 
P. Kankiewicz 
M. Kaplan 
T. Kwiatkowski 
I. Konstanciak 
A. Kruszewki 
V. Kudak 
F. Manzini 
H. -K. Moon 
A. Marciniak 
M. Murawiecka 
J. Nadolny 
W. Ogłoza 
J. L Ortiz 
D. Oszkiewicz 
H. Pallares 
N. Peixinho 
R. Poncy 
F. Reyes 
J. A. de los Reyes 
T. Santana-Ros 
K. Sobkowiak 
S. Pastor 
F. Pilcher 
M. C. Quiñones 
P. Trela 
D. Vernet 
Keywords: astro-ph.EP; astro-ph.EP
Issue Date: 24-Jul-2017
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. 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.
URI: http://hdl.handle.net/10316/80786
DOI: 10.1051/0004-6361/201630104
Rights: openAccess
Appears in Collections:I&D CITEUC - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat 
1707.07503.pdf1.88 MBAdobe PDFView/Open
Show full item record

WEB OF SCIENCETM
Citations

2
checked on Jun 11, 2019

Page view(s)

15
checked on Jun 12, 2019

Download(s)

14
checked on Jun 12, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.