Results 21 to 30 of about 394,300 (243)
Animal Conservation, Volume 25, Issue 6, Page 771-781, December 2022., 2022 We combined the results of a mesocosm experiment with demographic population modeling to investigate how the conversion of native prairie to agricultural grasslands dominated by Tall Fescue grass (Lolium arundinacea) affected larval density dependence and adult population size of an imperiled amphibian, Lithobates areolatus (Crawfish Frog).
C. S. Kross, J. D. Willson
wiley +1 more source
Integrative biology of injury in animals
Biological Reviews, Volume 98, Issue 1, Page 34-62, February 2023., 2023 ABSTRACT Mechanical injury is a prevalent challenge in the lives of animals with myriad potential consequences for organisms, including reduced fitness and death. Research on animal injury has focused on many aspects, including the frequency and severity of wounding in wild populations, the short‐ and long‐term consequences of injury at different ...
Corey W. Rennolds, Alexandra E. Bely
wiley +1 more source
The Astronomical Journal, 2023 469219 Kamo‘oalewa is selected as one of the primary targets of Tianwen-2 mission, which is currently believed to be the most stable quasi-satellite of Earth. Here we derive a weak detection of the Yarkovsky effect for Kamo‘oalewa, giving A _2 = (−1.075 ±
Shoucun Hu +4 more
doaj +1 more source
The relationship between the `limiting' Yarkovsky drift speed and asteroid families' Yarkovsky V-shape [PDF]
Serbian Astronomical Journal, 2020 The Yarkovsky effect is an important force to consider in order to understand the long-term dynamics of asteroids. This non-gravitational force affects the orbital elements of objects revolving around a source of heat, especially their semi ...
Milić-Žitnik I.
doaj +1 more source
Origin and Dynamical Evolution of the Asteroid Belt [PDF]
, 2022 The asteroid belt was dynamically shaped during and after planet formation. Despite representing a broad ring of stable orbits, the belt contains less than one one-thousandth of an Earth mass. The asteroid orbits are dynamically excited with a wide range in eccentricity and inclination and their compositions are diverse, with a general trend toward dry
Raymond, Sean N., Nesvorný, David
openaire +2 more sources
Study of the Dynamics of the Asteroid Kamo`Oalewa
Russian Physics Journal, 2021 The motion of the asteroid (469219) Kamo`oalewa, which moves in 1:1 mean motion resonance with the Earth, is investigated. Over the course of studying the dynamics of this object, we revealed close approaches to planets of the Solar System and mean motion and secular resonances and estimated the chaoticity of its orbit.
Guryanov, S. A, Galushina, T. Yu.
openaire +3 more sources
Machine learning applied to asteroid dynamics
Celestial Mechanics and Dynamical Astronomy, 2022 Machine Learning (ML) is the branch of computer science that studies computer algorithms that can learn from data. It is mainly divided into supervised learning, where the computer is presented with examples of entries, and the goal is to learn a general rule that maps inputs to outputs, and unsupervised learning, where no label is provided to the ...
V. Carruba +4 more
openaire +3 more sources
Massive physical and dynamical characterization of asteroids [PDF]
Proceedings of the International Astronomical Union, 2006 Numerous new Solar System objects, mainly asteroids, are still detected nowadays but their physical and dynamical characteristics remain not accurately determined, until dedicated observations and analysis are made. However, the Virtual Observatory is a perfect framework to search for this characterization by data mining.
Thuillot, William +8 more
openaire +3 more sources
Dynamical evolution of the inner asteroid belt [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT A determination of the dynamical evolution of the asteroid belt is difficult because the asteroid belt has evolved since the time of asteroid formation through mechanisms that include: (1) catastrophic collisions, (2) rotational disruption, (3) chaotic orbital evolution, and (4) orbital evolution driven by Yarkovsky radiation ...
Dermott, SF +5 more
openaire +4 more sources
The Dynamics of the Trojan Asteroids [PDF]
Symposium - International Astronomical Union, 1994 The state of the art in the dynamics of the Trojan asteroids has progressed rapidly, since it has been possible to perform numerical integrations of many orbits for millions of years. Accurate proper elements are now computed by the synthetic method, that is from the output of a numerical integration; their stability, at least for time spans of a few ...
openaire +2 more sources