Results 161 to 170 of about 8,179,295 (185)

Activity of the Main-Belt Comet 324P/La Sagra

2022
<p><span lang="en-US">Main-belt comets are objects orbiting in the main belt, they have near-surface ice, supposed to be water ice, and it is surprising, because water ice is unstable against sublimation at the surface temperatures of asteroids at the distance of the main belt.
Maria Mastropietro, Henry Hsieh, Yoonyoung Kim, Jessica Agarwal   +3 more
openaire   +1 more source

Cosmic Roulette: Comets In The Main Belt Asteroid Region

Earth, Moon, and Planets, 2000
We have produced top ten ranked lists of impact velocity, mainbelt asteroid region dwell times and impact probabilities for a selection of short period comets. The comet with the combined highest ranking with respect to impact probability and impact velocity is Comet C/1766 G1 Helfenzrieder.
Martin Beech, Kai Gauer
openaire   +1 more source

Activating main belt comets by collisions

2016
Since their identification as a new class of bodies by Hsieh and Jewitt in 2006 active asteroids (or Main Belt Comets, MBCs) have attracted a great deal of interest. Given that sublimation of volatile material (presumably water-ice) drives MBC activity, these bodies are probable candidates for delivering a significant amount of Earth's water. Dynamical
Maindl, Thomas, Haghighipour, Nader, Schäfer, Christoph, Speith, Roland   +3 more
openaire   +1 more source

Triggering the Activity of Main Belt Comets

2015
We present impact simulation results of meter-sized projectiles eroding the target's surface and discuss their implications for the origin of main belt comets.
Maindl, Thomas, Haghighipour, Nader, Schaefer, C., Speith, Roland, Dvorak, Rudolf   +4 more
openaire   +1 more source

Main-belt debris on comet-like orbits

Understanding the tension between the dynamical and physical characteristics of solar system debris has been a goal of astronomers and planetary scientists for a long time. This study considered a large (>1400) dataset of orbits gathered from six years of fireball observations observed by the Desert Fireball Network.
Patrick Shober, Eleanor Sansom, Phil Bland, Hadrien Devillepoix, Martin Towner, Martin Cupak, Robert Howie, Benjamin Hartig, Seamus Anderson   +8 more
openaire   +1 more source

A Comprehensive Model for Activation of Main Belt Comets

2018
Main Belt Comets (MBCs) are asteroidal bodies with tails similar to those of comets. It has been suggested that the comet-like activity of these activated asteroids is due to the sublimation of sub-surface water-ice that is exposed when these objects are impacted by meter-sized bodies.
Haghighipour, Nader, Maindl, Thomas
openaire   +1 more source

A Design of Dust Analyzer for Future Main Belt Comet Exploration Mission

Advances in Space Research, 2022
Detian Li, Zhuang Jianhong, Li Cunhui
exaly  

The Effect of the Heat of Impact on the Activation of Main Belt Comets

2016
Main Belt Comets' activity is assumed to be driven by the sublimation of volatiles, making them candidates for the delivery of a part of Earth's water. We simulate impacts of smaller objects that could have played a major role in activating them.
Werner, J., Maindl, Thomas, Haghighipour, Nader, Schäfer, Christoph, Speith, Roland, Kley, Wilhelm   +5 more
openaire   +1 more source

Design and Verification of a Projectile Structure for Main-belt Comets Penetration Exploration

2022 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2022
Junyue Tang, He Liang, Cheng Chi, Junxiao Xiao, Zixiao Lu, Ziyun Yao, Zekun Ha, Shengyuan Jiang   +7 more
openaire   +1 more source

A Population of Comets in the Main Asteroid Belt

Science, 2006
Henry H. Hsieh, David C. Jewitt
exaly