Results 11 to 20 of about 13,645 (266)
Free-floating Planets, Survivor Planets, Captured Planets, and Binary Planets from Stellar Flybys
The Astrophysical JournalIn star clusters, close stellar encounters can strongly impact the architecture of a planetary system or even destroy it. We present a systematic study of the effects of stellar flybys on two-planet systems.
Fangyuan Yu, Dong Lai
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Spin Dynamics of Extrasolar Giant Planets in Planet–Planet Scattering [PDF]
The Astrophysical Journal, 2021 Abstract Planet–planet scattering best explains the eccentricity distribution of extrasolar giant planets, and past literature showed that the orbits of planets evolve due to planet–planet scattering. This work studies the spin evolution of planets in planet–planet scattering in two-planet systems.
Yu-Cian Hong +3 more
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Atmosphere loss in planet–planet collisions [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Many of the planets discovered by the Kepler satellite are close orbiting super-Earths or mini-Neptunes. Such objects exhibit a wide spread of densities for similar masses. One possible explanation for this density spread is giant collisions stripping planets of their atmospheres.
Thomas R Denman +3 more
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Tilting Planets during Planet Scattering [PDF]
The Astrophysical Journal Letters, 2021 Abstract Observational constraints on planetary spin axis have recently become possible, and they have revealed a system that favors large spin-axis misalignment, low stellar spin–orbit misalignment, and high eccentricity. To explain the origin of such systems, we propose a mechanism that could tilt the planetary spin axis during planet ...
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PLANET-PLANET SCATTERING IN PLANETESIMAL DISKS [PDF]
The Astrophysical Journal, 2009 We study the final architecture of planetary systems that evolve under the combined effects of planet-planet and planetesimal scattering. Using N-body simulations we investigate the dynamics of marginally unstable systems of gas and ice giants both in isolation and when the planets form interior to a planetesimal belt.
Raymond, Sean N. +2 more
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Dynamical Outcomes of Planet‐Planet Scattering [PDF]
The Astrophysical Journal, 2008 Observations in the past decade have revealed extrasolar planets with a wide range of orbital semimajor axes and eccentricities. Based on the present understanding of planet formation via core accretion and oligarchic growth, we expect that giant planets often form in closely packed configurations.
Chatterjee, Sourav +3 more
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THE FIRST PLANETS: THE CRITICAL METALLICITY FOR PLANET FORMATION [PDF]
The Astrophysical Journal, 2012 12 pages, 5 figures; accepted for publication in ...
Johnson, J., Li, H.
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Ready functions for calculating the Martian radiation environment
Journal of Space Weather and Space Climate, 2019 It is extremely important to understand and model the Martian radiation environment in preparation for future human missions to Mars, especially during extreme and elevated conditions such as an intense solar energetic particle (SEP) event.
Guo Jingnan +4 more
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The PLANET Collaboration [PDF]
Symposium - International Astronomical Union, 1996 A newly-formed microlensing monitoring network, the PLANET collaboration, is briefly described.
M. Albrow +11 more
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معتقد التنجيم ورموزه على مسكوكات الجزيرة الفراتية واألناضول خالل القرنين السادس والسابع الهجريين Astrology as a Folk Life on Mesopotamian, and Anatolian Coins from the Sixth to Seventh H.AH Century [PDF]
Journal of General Union of Arab Archaeologists, 2023 {AR} تتناول هذه الورقة البحثية موضوع التنجيم وبعض من رموزه (كالشمس والقمر) التي ظهرت على المسكوكات الإسلامية، في كل من الجزيرة الفراتية والأناضول خلال الفترة ما بين القرن السادس حتى القرن السابع الهجريين، حيث يُعد ظهورها أمر بالغ الأهمية؛ فإذ لم يكن ...
Fatima Mriziq Odeh Abu Shaqqal
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