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Are Large Families in The Main Belt Homogeneous?

Published online by Cambridge University Press:  03 March 2020

Ivan G. Slyusarev*
Affiliation:
Department of Astronomy and Space Informatics, V.N. Karazin Kharkiv National University, 61022, Kharkiv, Ukraine email: i.slyusarev@karazin.ua
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Abstract

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Using color indexes from SDSS and albedos from WISE we tested the homogeneity of 56 large Main belt families from Nesvorny list using the “color - albedo” plots. 25% of the analyzed families are non-homogeneous in terms of albedos and colors. Only two families (Flora and Vesta) contain low, moderate and high albedo asteroids, that are separated in a “color-albedo” plot. The fraction of the low albedo asteroids in bimodal families is not negligible (10-30%). Seven bimodal families may contain members from two overlapping families.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

References

Nesvorny, D. 2015, Nesvorny HCM Asteroid Families V3.0., NASA Planetary Data SystemGoogle Scholar
Mainzer, A. K., Bauer, J. M., Cutri, R. M., Grav, T., Kramer, E. A., Masiero, J. R., Nugent, C. R., Sonnett, S. M., Stevenson, R. A., & Wright, E. L. 2016, NEOWISE Diameters and Albedos V1.0, NASA Planetary Data SystemGoogle Scholar
Parker, A. H., Ivezic, Z., Juric, M., Lupton, R., Sekora, M. D., & Kowalski, A. 2000, Icarus, 198, 138 Google Scholar
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