Sizes of main-belt asteroids by combining shape models and Keck adaptive optics observations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173940" target="_blank" >RIV/00216208:11320/13:10173940 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.icarus.2013.07.023" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2013.07.023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.icarus.2013.07.023" target="_blank" >10.1016/j.icarus.2013.07.023</a>

Result language

angličtina

Original language name

Sizes of main-belt asteroids by combining shape models and Keck adaptive optics observations

Original language description

We select 50 main-belt asteroids with a diameter between 20 and 400 km for which we have (i) shape models derived by the lightcurve inversion method and (ii) resolved observations of good quality collected with the Keck II adaptive optics (AO) system inthe near-infrared. We derive the size of these asteroids by minimizing the difference between the contours from deconvolved AO images and the projected silhouettes calculated from the shape model at the time of the AO observations. We compute the volume-equivalent diameters for 48 of these asteroids. For 15 of them, we remove the ambiguity of the pole orientation typical for shape models derived by the lightcurve inversion method. We have found that our equivalent diameters are smaller by 3%, 7%, and 2%compared with the effective diameters derived from mid-IR photometric observations provided by IRAS, WISE and AKARI. For 40 asteroids with previously determined mass estimates, we compute their bulk densities and discuss the mass-density

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Icarus

ISSN

0019-1035

e-ISSN

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Volume of the periodical

226

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

1045-1057

UT code for WoS article

000324720200082

EID of the result in the Scopus database

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