2020A&A...643A.102D


Query : 2020A&A...643A.102D

2020A&A...643A.102D - Astronomy and Astrophysics, volume 643A, 102-102 (2020/11-1)

A comparative analysis of the outer-belt primitive families.

DE PRA M.N., PINILLA-ALONSO N., CARVANO J., LICANDRO J., MORATE D., LORENZI V., DE LEON J., CAMPINS H. and MOTHE-DINIZ T.

Abstract (from CDS):


Context. Asteroid families are witnesses to the intense collisional evolution that occurred on the asteroid belt. The study of the physical properties of family members can provide important information about the state of differentiation of the parent body and provide insights into how these objects were formed. Several of these asteroid families identified across the main belt are dominated by low-albedo, primitive asteroids. These objects are important for the study of Solar System formation because they were subject to weaker thermophysical processing and provide information about the early conditions of our planetary system.
Aims. We aim to study the diversity of physical properties among the Themis, Hygiea, Ursula, Veritas, and Lixiaohua families.
Methods. We present new spectroscopic data, combined with a comprehensive analysis using a variety of data available in the literature, such as albedo and rotational properties.
Results. Our results show that Themis and Hygiea families, the largest families in the region, present similar levels of hydration. Ursula and Lixiaohua families are redder in comparison to the others and present no sign of hydrated members based on the analysis of visible spectra. Conversely, Veritas presents the highest fraction of hydrated members.
Conclusions. This work demonstrates a diverse scenario in terms of the physical properties of primitive outer-belt families, which could be associated with dynamical mixing of asteroid populations and the level of differentiation of the parental body.

Abstract Copyright: © ESO 2020

Journal keyword(s): minor planets, asteroids: general

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 44594 ** 06 20 06.13530 -48 44 27.9344 7.46 7.26 6.60     G2Va 157 0
2 BD+00 2717 * 10 57 04.0449104240 -00 13 12.886842194 10.822 10.567 9.903 9.537 9.206 ~ 62 0
3 HD 139287 PM* 15 37 18.1482181279 -00 09 49.690868022   9.04 8.44     G2/3V 38 0
4 BD+00 3383 * 15 38 16.2767705448 +00 15 21.656125086   11.10 10.50     ~ 30 0
5 HD 144584 * 16 07 01.9564986308 -12 17 55.925330834   10.27 9.86 9.65 9.462 A7V 6 0

    Equat.    Gal    SGal    Ecl

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2021.07.29-10:21:23

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