Results 31 to 40 of about 10,374 (277)

The Effect of Convective Overstability on Planet Disk Interactions [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe run global two dimensional hydrodynamical simulations, using the PLUTO code and the planet-disk model of Uribe et al. 2011, to investigate the effect of the convective overstability (CO) on planet-disk interactions. First, we study the long-term evolution of planet-induced vortices. We found that the CO leads to smoother planetary gap edges,
Hubert Klahr, Aiara Lobo Gomes
openaire   +1 more source

RODEO: a new method for planet-disk interaction [PDF]

Astronomy & Astrophysics, 2006
In this paper we describe a new method for studying the hydrodynamical problem of a planet embedded in a gaseous disk. We use a finite volume method with an approximate Riemann solver (the Roe solver), together with a special way to integrate the source terms.
Paardekooper, S.-J., Mellema, G.
openaire   +3 more sources

Gap formation in a self-gravitating disk and the associated migration of the embedded giant planet [PDF]

, 2014
We present the results of our recent study on the interactions between a giant planet and a self-gravitating gas disk. We investigate how the disk's self-gravity affects the gap formation process and the migration of the giant planet.
Zhang, Hui, Zhou, Ji-Lin, Liu, Huigen, Wittenmyer, Robert A.   +3 more
core   +1 more source

Star-planet interactions [PDF]

, 2018
When planets are formed from the protoplanetary disk and after the disk has dissipated, the evolution of their orbits is governed by tidal interactions, friction, and gravitational drag, and also by changes in the mass of the star and planet.
Lionel Haemmerlé, Rao, Suvrat, Haemmerlé, Lionel, Ekström, Sylvia, Privitera, Giovanni, Mordasini, Christoph, Georgy, Cyril, Giovanni Privitera, Suvrat Rao, Eggenberger, Patrick, Georges Meynet, Meynet, Georges, Cyril Georgy, Christoph Mordasini, Patrick Eggenberger, Sylvia Ekström   +15 more
core   +1 more source

Formation of Gaps in Self-gravitating Debris Disks by Secular Resonance in a Single-planet System. II. Toward a Self-consistent Model

The Astrophysical Journal, 2023
High-resolution observations of several debris disks reveal structures such as gaps and spirals, suggestive of gravitational perturbations induced by underlying planets.
Antranik A. Sefilian, Roman R. Rafikov, Mark C. Wyatt   +2 more
doaj   +1 more source

TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit

The Astrophysical Journal Letters, 2023
Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R _⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity ...
Jiayin Dong, Songhu Wang, Malena Rice, George Zhou, Chelsea X. Huang, Rebekah I. Dawson, Gudmundur K. Stefánsson, Samuel Halverson, Shubham Kanodia, Suvrath Mahadevan, Michael W. McElwain, Jaime A. Alvarado-Montes, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Sarah E. Logsdon, Ryan C. Terrien, Karen A. Collins, Gregor Srdoc, Ramotholo Sefako, Didier Laloum, David W. Latham, Allyson Bieryla, Paul A. Dalba, Diana Dragomir, Steven Villanueva Jr., Steve B. Howell, George R. Ricker, S. Seager, Joshua N. Winn, Jon M. Jenkins, Avi Shporer, David Rapetti   +33 more
doaj   +1 more source

Exploiting the performance gains of modern disk drives by enhancing data locality. [PDF]

, 2009
Due to the widening performance gap between RAM and disk drives, a large number of I/O optimization methods have been proposed and designed to alleviate the impact of this gap.
Deng, Yuhui
core   +1 more source

Coplanar Circumbinary Planets Can Be Unstable to Large Tilt Oscillations in the Presence of an Inner Polar Planet

The Astrophysical Journal Letters, 2023
Mutually misaligned circumbinary planets may form in a warped or broken gas disk or from later planet–planet interactions. With numerical simulations and analytic estimates we explore the dynamics of two circumbinary planets with a large mutual ...
Anna C. Childs, Rebecca G. Martin, Stephen Lepp, Stephen H. Lubow, Aaron M. Geller   +4 more
doaj   +1 more source

Dynamics of the TWA 7 planetary system and possibility of an additional planet

Astronomy & Astrophysics
Context. The debris disk surrounding the young star TWA 7 exhibits morphological features that tightly constrain its planetary architecture. JWST/MIRI observations have recently revealed a directly imaged outer planet orbiting at a large separation.
Lacquement A., Beust H., Duchêne G., Lagrange A.-M.   +3 more
doaj   +1 more source

The Planet-Disk Connection: from Protoplanetary Disks to Planetary Atmospheres [PDF]

, 2022
When gas giant planets form, they influence the structure of the surrounding gas disk, which in turn shapes the final compositions of their gas envelopes.
Wallack, Nicole Lisa
core   +1 more source