VLT/SPHERE- and ALMA-based shape reconstruction of asteroid (3) Juno

We use the recently released Atacama Large Millimeter Array (ALMA) and VLT/SPHERE science verification data, together with earlier adaptive-optics images, stellar occultation, and lightcurve data to model the 3D shape and spin of the large asteroid (3) Juno with the all-data asteroid modelling (ADAM...

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Published inAstronomy and astrophysics (Berlin) Vol. 581; p. L3
Main Authors Viikinkoski, M., Kaasalainen, M., Ďurech, J., Carry, B., Marsset, M., Fusco, T., Dumas, C., Merline, W. J., Yang, B., Berthier, J., Kervella, P., Vernazza, P.
Format Journal Article
LanguageEnglish
Published EDP Sciences 01.09.2015
Subjects
asteroids: individual: Juno
Astrophysics
instrumentation: adaptive optics
instrumentation: interferometers
methods: numerical
minor planets
Physics
Sciences of the Universe
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Summary:We use the recently released Atacama Large Millimeter Array (ALMA) and VLT/SPHERE science verification data, together with earlier adaptive-optics images, stellar occultation, and lightcurve data to model the 3D shape and spin of the large asteroid (3) Juno with the all-data asteroid modelling (ADAM) procedure. These data set limits on the plausible range of shape models, yielding reconstructions suggesting that, despite its large size, Juno has sizable unrounded features moulded by non-gravitational processes such as impacts.
Bibliography:dkey:10.1051/0004-6361/201526626
publisher-ID:aa26626-15
bibcode:2015A%26A...581L...3V
ark:/67375/80W-ZVQF9V1X-M
e-mail: matti.viikinkoski@tut.fi
istex:6F810BDA846C6D95CD08E28280703768487064FB
Based on observations collected at the European Southern Observatory, Paranal, Chile (prog. ID: 60.A-9379, 086.C-0785), and at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation.
ISSN:0004-6361
1432-0746
1432-0756
DOI:10.1051/0004-6361/201526626