Candidate Main-belt Asteroids for Surface Heterogeneity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10490565" target="_blank" >RIV/00216208:11320/24:10490565 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ZAbPCgRakX" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ZAbPCgRakX</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-3881/ad3045" target="_blank" >10.3847/1538-3881/ad3045</a>
Alternative languages
Result language
angličtina
Original language name
Candidate Main-belt Asteroids for Surface Heterogeneity
Original language description
Large terrestrial bodies in our solar system like the Earth, Mars, Mercury, and the Moon exhibit geologically complex surfaces with compositional heterogeneity. From past studies using large telescopes and spacecraft, it was shown that asteroids with diameters larger than 100 km also show surface heterogeneity at hemispheric scales, while on smaller objects, such features remain to be detected. Here, we investigate candidates for surface heterogeneity in a sample of 130 main-belt asteroids using multiepoch spectroscopic data from the MIT-Hawaii Near-Earth Object Spectroscopic Survey, which has been observing asteroids for about 20 yr using a self-consistent observation technique. Twelve conservative candidates with spectra more than 3 sigma apart from each other at 2.4 mu m and 52 optimistic candidates for surface heterogeneity are detected. These candidates include eight objects already reported as being heterogeneous. Our study suggests that the size boundary between small homogeneous asteroids and larger heterogeneous objects, if it exists, is lower than 100 km. A-type asteroids have a higher proportion of heterogeneous candidates than other asteroids. This may be because olivine, which is the main surface constituent of these objects, reacts more efficiently to space weathering with respect to pyroxene, such that a similar range of surface ages will translate into a wider range of optical-to-near-infrared spectral slopes in the case of A-type bodies.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA22-17783S" target="_blank" >GA22-17783S: There is strength in numbers - Exploitation of Unistellar eVscope network of citizen scientiest for the study of asteroids</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The Astronomical Journal
ISSN
0004-6256
e-ISSN
1538-3881
Volume of the periodical
167
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
63
Pages from-to
224
UT code for WoS article
001258550700001
EID of the result in the Scopus database
2-s2.0-85190717979