Results 21 to 30 of about 5,007 (161)

A Geoscientific Review on CO and CO₂ Ices in the Outer Solar System

Geosciences, 2022
Ground-based telescopes and space exploration have provided outstanding observations of the complexity of icy planetary surfaces. This work presents our review of the varying nature of carbon dioxide (CO2) and carbon monoxide (CO) ices from the cold ...
Caitlin Ahrens, Hypatia Meraviglia, Christopher Bennett   +2 more
doaj   +1 more source

Crater Morphometry on Callisto

The Planetary Science Journal
Impact crater formation is affected by the physical properties of planetary crusts, allowing comparison of crater dimensions to serve as a proxy for comparing the crustal properties of different planetary bodies.
V. J. Bray, P. M. Schenk
doaj   +1 more source

Delivery of Dust Particles from Protoplanetary Disks onto Circumplanetary Disks of Giant Planets

The Astrophysical Journal
The principal regular satellites of gas giants are thought to be formed by the accumulation of solid materials in circumplanetary disks (CPDs). While there has been significant progress in the study of satellite formation in CPDs, details of the supply ...
Natsuho Maeda, Keiji Ohtsuki, Ryo Suetsugu, Yuhito Shibaike, Takayuki Tanigawa, Masahiro N. Machida   +5 more
doaj   +1 more source

Pebble accretion at the origin of water in Europa

, 2017
Despite the fact that the observed gradient in water content among the Galilean satellites is globally consistent with a formation in a circum-Jovian disk on both sides of the snowline, the mechanisms that led to a low water mass fraction in Europa ...
Mousis, Olivier, Ronnet, Thomas, Vernazza, Pierre   +2 more
core   +5 more sources

Models of dust around Europa and Ganymede [PDF]

, 2012
We use numerical models, supported by our laboratory data, to predict the dust densities of ejecta outflux at any altitude within the Hill spheres of Europa and Ganymede.
Colwell, Dikarev, Divine, Flandes, Fujiwara, Grün, Grün, Hansen, Hiraoka, Horànyi, Horànyi, J.C. Zarnecki, J.K. Hillier, Jehn, K. Miljković, Koschny, Krivov, Krivov, Krüger, Krüger, Krüger, Krüger, Landgraf, Lange, McCord, McDonnell, Melosh, Miljković, Miljković, N.J. Mason, Nakamura, Nakamura, O’Keefe, Petrović, Postberg, Spahn, Spencer, Sremčević, Sremčević, Staubach, Thiessenhusen   +40 more
core   +2 more sources

New Global Map of Io’s Volcanic Thermal Emission and Discovery of Hemispherical Dichotomies

The Planetary Science Journal
By combining multiple spacecraft and telescope data sets, the first fully global volcanic heat flow map of Io has been created, incorporating data down to spatial resolutions of ∼10 km pixel ^−1 in Io’s polar regions.
Ashley Gerard Davies, Jason E. Perry, David A. Williams, Glenn J. Veeder, David M. Nelson   +4 more
doaj   +1 more source

Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55

The Planetary Science Journal
We report volcanic changes on Io since the last Galileo (2002) and New Horizons (2007) flybys as observed by NASA’s Juno spacecraft, examining Io’s volcanism down to the local scale (200 K at 325 individual sites of volcanic activity has been generated ...
Jason E. Perry, Ashley Gerard Davies, David A. Williams, David M. Nelson   +3 more
doaj   +1 more source

Not just gas: How solids-driven torques shaped the migration of the Galilean moons

Astronomy & Astrophysics
Context. A crucial aspect of formation models for the Galilean moons of Jupiter is that the objects survive rapid inward orbital migration. Aims. The primary aim of this study is to investigate the orbital migration of the Galilean moons by incorporating
Gonzalez-Rivas L., Krapp L., Ramos X., Benitez-Llambay P.   +3 more
doaj   +1 more source

The Role of Ejecta in the Small Crater Populations on the Mid-Sized Saturnian Satellites

, 2011
We find evidence that crater ejecta play an important role in the small crater populations on the Saturnian satellites, and more broadly, on cratered surfaces throughout the Solar System. We measure crater populations in Cassini images of Enceladus, Rhea,
Alvarellos, Alvarellos, Alvarellos, Bart, Bierhaus, Bierhaus, Bierhaus, Bottke, Burns, Cintala, Crater Analysis Techniques Working Group, Davies, Dobrovolskis, Dundas, Durham, Edward B. Bierhaus, Giese, Hartmann, Horedt, Horedt, Housen, José Luis Alvarellos, Kempf, Kevin Zahnle, Kirchoff, Kirchoff, Levison, Lissauer, Lorenz, Luke Dones, Marchi, McEwen, McEwen, Melosh, Moore, Neish, Neukum, Plescia, Plescia, Plescia, Porco, Porco, Preblich, Richardson, Robbins, Schenk, Schenk, Schmidt, Schubert, Schultz, Smith, Smith, Snodgrass, Stern, Thomas, Vickery, Weiler, Wood, Zahnle, Zahnle, Zahnle, Zahnle   +61 more
core   +1 more source

Formation of Water-rich Giant Planet Satellites at Decretion Disk Ice Lines

The Planetary Science Journal
The volatile budgets of giant planet satellites are critical to unraveling the origin of their building blocks within the circumplanetary disks that hosted them.
Teng Ee Yap, David J. Stevenson
doaj   +1 more source