Distribution of shape elongations of main belt asteroids derived from Pan-STARRS1 photometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385760" target="_blank" >RIV/00216208:11320/18:10385760 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/201731554" target="_blank" >https://doi.org/10.1051/0004-6361/201731554</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201731554" target="_blank" >10.1051/0004-6361/201731554</a>
Alternative languages
Result language
angličtina
Original language name
Distribution of shape elongations of main belt asteroids derived from Pan-STARRS1 photometry
Original language description
Context. A considerable amount of photometric data is produced by surveys such as Pan-STARRS, LONEOS, WISE, or Catalina. These data are a rich source of information about the physical properties of asteroids. There are several possible approaches for using these data. Light curve inversion is a typical method that works with individual asteroids. Our approach in focusing on large groups of asteroids, such as dynamical families and taxonomic classes, is statistical; the data are not sufficient for individual models. Aims. Our aim is to study the distributions of shape elongation b/a and the spin axis latitude beta for various subpopulations of asteroids and to compare our results, based on Pan-STARRS1 survey, with statistics previously carried out using various photometric databases, such as Lowell and WISE. Methods. We used the LEADER algorithm to compare the b/a and beta distributions for various subpopulations of asteroids. The algorithm creates a cumulative distributive function (CDF) of observed brightness variations, and computes the b/a and beta distributions with analytical basis functions that yield the observed CDF. A variant of LEADER is used to solve the joint distributions for synthetic populations to test the validity of the method. Results. When comparing distributions of shape elongation for groups of asteroids with different diameters D, we found that there are no differences for D < 25 km. We also constructed distributions for asteroids with different rotation periods and revealed that the fastest rotators with P = 0-4 h are more spheroidal than the population with P = 4-8 h.
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/GA15-04816S" target="_blank" >GA15-04816S: A big picture of the main asteroid belt - physical properties of asteroids derived by inversion of optical and infrared photometry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics [online]
ISSN
1432-0746
e-ISSN
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Volume of the periodical
611
Issue of the periodical within the volume
Neuveden
Country of publishing house
FR - FRANCE
Number of pages
10
Pages from-to
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UT code for WoS article
000429093500003
EID of the result in the Scopus database
2-s2.0-85045197138