Results 81 to 90 of about 8,504 (191)

Semianalytical Model for the Dynamical Evolution of Planetary Systems. II. Application to Systems Formed by a Planet Formation Model

The Astrophysical Journal
The standard formation model of close-in low-mass planets involves efficient inward migration followed by growth through giant impacts after the protoplanetary gas disk disperses.
Tadahiro Kimura, Eiichiro Kokubo, Yuji Matsumoto, Christoph Mordasini, Masahiro Ikoma   +4 more
doaj   +1 more source

Racism, migration and development: the foundations of planetary order [PDF]

, 2006
Using Foucault's conception of racism and sovereign power as a point of departure, this paper examines an expansive and centralizing security architecture that interconnects the policing of international migration, the promotion of domestic social ...
Duffield, MR, Mark Duffield
core   +1 more source

Resonant Chains and the Convergent Migration of Planets in Protoplanetary Disks

The Astronomical Journal
An increasing number of compact planetary systems with multiple planets in a resonant chain have been detected. The resonant chain must be maintained by convergent migration of the planets due to planet–disk interactions if it is formed before the ...
Ka Ho Wong, Man Hoi Lee
doaj   +1 more source

The HR 8799 debris disk: Shaped by planetary migration and a possible fifth outermost planet [PDF]

International audienceContext. The HR 8799 system hosts four giant planets between a warm and cold debris disk and has an extended dusty tail beyond. It serves as an ideal laboratory for studying planetary formation and evolution.
Tim D. Pearce, Pearce, Tim D., Pedro P. Poblete, Carolina Charalambous, Poblete, Pedro P., Charalambous, Carolina   +5 more
core   +1 more source

Chemical Abundances Shape History (CASH). I. A Link between Giant Planets' Orbital Periods and Host Stellar C/O Ratios

The Astronomical Journal
The chemical abundance of host stars plays a pivotal role in shaping the formation history of planetary systems, yet the influence of elements beyond iron remains poorly understood. Here, we investigate the relationship between the carbon-to-oxygen (C/O)
Ruisheng Zhang, Ji-Wei Xie, Mengrui Pan, Beibei Liu, Ji-Lin Zhou, Ji Wang, Haiyang S. Wang, Yapeng Zhang   +7 more
doaj   +1 more source

Formation of Planetary Systems from Pebble Accretion and Migration III: The Formation of Gas Giants [PDF]

, 2018
International audiencePrevious simulations of planet formation utilizing single bodies including pebble accretion and planet migration imply that giant planets found in orbits exterior to 1 AU originate from the outer regions of protoplanetary discs (30 ...
Jacobson, S., Jacobson, Seth A., Izidoro, A., Bitsch, Bertram, Raymond, Sean N., Johansen, Anders, Lambrechts, M., Izidoro, André, Lambrechts, Michiel, Morbidelli, A., Bitsch, B., Johansen, A., Raymond, S., Morbidelli, Alessandro   +13 more
core  

Planetary Aeolian Geomorphology [PDF]

, 2019
Aeolian processes contribute to surface landforms on several bodies in our solar system. Sediment transport is responsible for a broad range of geophysical phenomena, including dust storms on Earth and Mars and the formation and migration of dunes on ...
Mary C. Bourke, Lorenz, Ralph D., Lewis, Stephen, Ralph D. Lorenz, Balme, Matthew, Parteli, Eric, Stephen Lewis, Eric Parteli, Bourke, Mary C., Matthew Balme   +9 more
core   +1 more source

Solar System Migration Points to a Renewed Concept: Galactic Habitable Orbits

The Astrophysical Journal Letters
Astrophysical evidence suggests that the Sun was born near 5 kpc from the Galactic center, within the corotation radius of the Galactic bar, around 6–7 kpc.
Junichi Baba, Takuji Tsujimoto, Takayuki R. Saitoh   +2 more
doaj   +1 more source

A break in planet occurrence near the pebble isolation mass should be observable by the Roman microlensing survey

Astronomy & Astrophysics
Microlensing detections are uniquely well suited to probing the population of planets outside the water ice line, down to planetary masses comparable to the Earth’s. We performed 1D pebble-accretion population synthesis simulations to explore a sample of
Danti Claudia, Lambrechts Michiel, Diamond-Lowe Hannah   +2 more
doaj   +1 more source

Planetary migration in protoplanetary disks

, 2003
4 pages; 8 encapsulated figures.
openaire   +2 more sources