The Eos family halo
arXiv:1302.1447 · doi:10.1016/j.icarus.2013.02.002
Abstract
We study K-type asteroids in the broad surroundings of the Eos family because they seem to be intimately related, according to their colours measured by the Sloan Digital Sky Survey. Such `halos' of asteroid families have been rarely used as constraints for dynamical studies to date. We explain its origin as bodies escaping from the family `core' due to the Yarkovsky semimajor-axis drift and interactions with gravitational resonances, mostly with the 9/4 mean-motion resonance with Jupiter at 3.03 AU. Our N-body dynamical model allows us to independently estimate the age of the family 1.5 to 1.9 Gyr. This is approximately in agreement with the previous age estimate by Vokrouhlický et al. (2006) based on a simplified model (which accounts only for changes of semimajor axis). We can also constrain the geometry of the disruption event which had to occur at the true anomaly f =~ 120 to 180 deg.
submitted to Icarus
References in corpus (4)
Cited by in corpus (30)
- Asteroid families classification: exploiting very large data sets
- Identification and Dynamical Properties of Asteroid Families
- Main Belt Asteroids with WISE/NEOWISE: Near-Infrared Albedos
- A multi-domain approach to asteroid families identification
- An ancient and a primordial collisional family as the main sources of X-type asteroids of the inner Main Belt
- Source regions of carbonaceous meteorites and NEOs
- Yarkovsky V-shape identification of asteroid families
- Constraints on the original ejection velocity fields of asteroid families
- Spin states of asteroids in the Eos collisional family
- Discovery of a young asteroid cluster associated with P/2012~F5 (Gibbs)
- Hektor - an exceptional D-type family among Jovian Trojans
- Stability of Jovian Trojans and their collisional families
- Footprints of a possible Ceres asteroid paleo-family
- Dynamical evolution of the inner asteroid belt
- Size-dependent modification of asteroid family Yarkovsky V-shapes
- Shape models of asteroids based on lightcurve observations with BlueEye600 robotic observatory
- Characterizing the original ejection velocity field of the Koronis family
- Asteroid cratering families: recognition and collisional interpretation
- Gaia search for early-formed andesitic asteroidal crusts
- Keck and Gemini spectral characterization of Lucy mission fly-by target (152830) Dinkinesh
- Identification of a 4.3 billion year old asteroid family and planetesimal population in the Inner Main Belt
- Discovery of a young subfamily of the (221)~Eos asteroid family
- Asteroid migration due to the Yarkovsky effect and the distribution of the Eos family
- Identifying the population of stable resonant asteroids using large databases
- A study of 3-dimensional shapes of asteroid families with an application to Eos
- Discovery of an asteroid family linked to (22) Kalliope and its moon Linus
- Asteroid spin-states of a 4 Gyr collisional family
- Spin states of X-complex asteroids in the inner main belt -- I. Investigating the Athor and Zita collisional families
- Trojan asteroids and co-orbital dust ring of Venus
- New Insights into Erg Chech 002 Analogues in the Main Belt from Near-Infrared Spectroscopy