New and updated convex shape models of asteroids based on optical data from a large collaboration network
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Context. Asteroid modeling efforts in the last decade resulted in a comprehensive dataset of almost 400 convex shape models and their rotation states. These efforts already provided deep insight into physical properties of main-belt asteroids or large collisional families. Going into finer detail (e.g., smaller collisional families,asteroids with sizes ≲20 km) requires knowledge of physical parameters of more objects. Aims. We aim to increase the number of asteroid shape models and rotation states. Such results provide important input for further studies, such as analysis of asteroid physical properties in different populations, including smaller collisional families, thermophysical modeling, and scaling shape models by disk-resolved images, or stellar occultation data. This provides bulk density estimates in combination with known masses, but also constrains theoretical collisional and evolutional models of the solar system. Methods. We use all available disk-integrated optical data (i.e.,classical dense-in-time photometry obtained from public databases and through a large collaboration network as well as sparse-in-time individual measurements from a few sky surveys) as input for the convex inversion method, and derive 3D shape models of asteroids together with their rotation periods and orientations of rotation axes. The key ingredient is the support of more that 100 observers who submit their optical data to publicly available databases. Results. We present updated shape models for 36 asteroids, for which mass estimates are currently available in the literature, or for which masses will most likely be determined from their gravitational influence on smaller bodies whose orbital deflections will be observed by the ESA Gaia astrometric mission. Moreover, we also present new shape model determinations for 250 asteroids, including 13 Hungarias and three near-Earth asteroids. The shape model revisions and determinations were enabled by using additional optical data from recent apparitions for shape optimization.
Hanuš , J , Ďurech , J , Oszkiewicz , D A , Behrend , R , Carry , B , Delbo , M , Adam , O , Afonina , V , Anquetin , R , Antonini , P , Arnold , L , Audejean , M , Aurard , P , Bachschmidt , M , Baduel , B , Barbotin , E , Barroy , P , Baudouin , P , Berard , L , Berger , N , Bernasconi , L , Bosch , J-G , Bouley , S , Bozhinova , I N , Brinsfield , J , Brunetto , L , Canaud , G , Caron , J , Carrier , F , Casalnuovo , G , Casulli , S , Cerda , M , Chalamet , L , Charbonnel , S , Chinaglia , B , Cikota , A , Colas , F , Coliac , J-F , Collet , A , Coloma , J , Conjat , M , Conseil , E , Costa , R , Crippa , R , Cristofanelli , M , Damerdji , Y , Debackère , A , Decock , A , Déhais , Q , Déléage , T , Delmelle , S , Demeautis , C , Dróżdż , M , Dubos , G , Dulcamara , T , Dumont , M , Durkee , R , Dymock , R , Escalante del Valle , A , Esseiva , N , Esseiva , R , Esteban , M , Fauchez , T , Fauerbach , M , Fauvaud , M , Fauvaud , S , Forné , E , Fournel , C , Fradet , D , Garlitz , J , Gerteis , O , Gillier , C , Gillon , M , Giraud , R , Godard , J-P , Goncalves , R , Hamanowa , H , Hamanowa , H , Hay , K , Hellmich , S , Heterier , S , Higgins , D , Hirsch , R , Hodosan , G , Hren , M , Hygate , A , Innocent , N , Jacquinot , H , Jawahar , S , Jehin , E , Jerosimic , L , Klotz , A , Koff , W , Korlevic , P , Kosturkiewicz , E , Krafft , P , Krugly , Y , Kugel , F , Labrevoir , O , Lecacheux , J , Lehký , M , Leroy , A , Lesquerbault , B , Lopez-Gonzales , M J , Lutz , M , Mallecot , B , Manfroid , J , Manzini , F , Marciniak , A , Martin , A , Modave , B , Montaigut , R , Montier , J , Morelle , E , Morton , B , Mottola , S , Naves , R , Nomen , J , Oey , J , Ogłoza , W , Paiella , M , Pallares , H , Peyrot , A , Pilcher , F , Pirenne , J-F , Piron , P , Polińska , M , Polotto , M , Poncy , R , Previt , J P , Reignier , F , Renauld , D , Ricci , D , Richard , F , Rinner , C , Risoldi , V , Robilliard , D , Romeuf , D , Rousseau , G , Roy , R , Ruthroff , J , Salom , P A , Salvador , L , Sanchez , S , Santana-Ros , T , Scholz , A , Séné , G , Skiff , B , Sobkowiak , K , Sogorb , P , Soldán , F , Spiridakis , A , Splanska , E , Sposetti , S , Starkey , D , Stephens , R , Stiepen , A , Stoss , R , Strajnic , J , Teng , J-P , Tumolo , G , Vagnozzi , A , Vanoutryve , B , Vugnon , J M , Warner , B D , Waucomont , M , Wertz , O , Winiarski , M & Wolf , M 2016 , ' New and updated convex shape models of asteroids based on optical data from a large collaboration network ' , Astronomy & Astrophysics , vol. 586 , A108 , pp. 1-24 . https://doi.org/10.1051/0004-6361/201527441
Astronomy & Astrophysics
© ESO 2016. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1051/0004-6361/201527441
DescriptionJ.H. greatly appreciates the CNES post-doctoral fellowship program. J.H. and M.D. were supported by the project under the contract 11-BS56-008 (SHOCKS) of the French Agence National de la Recherche (ANR), JD by grant GACR 15-04816S of the Czech Science Foundation, DO by the grant NCN 2012/S/ST9/00022 of Polish National Science Center, and A. Marciniak by grant 2014/13/D/ST/01818 of Polish National Science Center.
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