Results 21 to 30 of about 1,062,553 (301)

The architecture and formation of the Kepler-30 planetary system [PDF]

open access: yes, 2017
We study the orbital architecture, physical characteristics of planets, formation and long-term evolution of the Kepler-30 planetary system, detected and announced in 2012 by the KEPLER team.
F. Panichi   +3 more
semanticscholar   +1 more source

MODELING PLANETARY SYSTEM FORMATION WITH N-BODY SIMULATIONS: ROLE OF GAS DISK AND STATISTICS COMPARED TO OBSERVATIONS [PDF]

open access: yes, 2009
During the late stage of planet formation, when Mars-sized cores appear, interactions among planetary cores can excite their orbital eccentricities, accelerate their merging, and thus sculpt their final orbital architecture. This study contributes to the
Huigen Liu, Ji-lin Zhou, Su Wang
semanticscholar   +1 more source

A Review of Possible Planetary Atmospheres in the TRAPPIST-1 System [PDF]

open access: yesSpace Science Reviews, 2020
TRAPPIST-1 is a fantastic nearby (∼39.14 light years) planetary system made of at least seven transiting terrestrial-size, terrestrial-mass planets all receiving a moderate amount of irradiation.
M. Turbet   +6 more
semanticscholar   +1 more source

On the formation age of the first planetary system [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractRecently, it has been observed the extreme metal-poor stars in the Galactic halo, which must be formed just after Pop III objects. On the other hand, the first gas clouds of mass ∼ 106 M⊙ are supposed to be formed at z ∼ 10, 20, and 30 for the 1σ, 2σ and 3σ, where the density perturbations are assumed of the standard ΛCDM cosmology.
Hara, Tetsuya   +3 more
openaire   +2 more sources

Planetary Mass Spectrometry for Agnostic Life Detection in the Solar System

open access: yesFrontiers in Astronomy and Space Sciences, 2021
For the past fifty years of space exploration, mass spectrometry has provided unique chemical and physical insights on the characteristics of other planetary bodies in the Solar System.
L. Chou   +14 more
semanticscholar   +1 more source

Architectures of planetary systems and implications for their formation [PDF]

open access: yesProceedings of the National Academy of Sciences, 2014
Significance Prior to the discovery of exoplanets, astronomers fine tuned theories of planet formation to explain detailed properties of the solar system. The discovery of exoplanets has significantly increased our appreciation for the diversity of planetary systems in nature. In this article we review the current understanding of the
openaire   +3 more sources

Solar System Formation in the Context of Extra-Solar Planets [PDF]

open access: yes, 2018
Exoplanet surveys have confirmed one of humanity's (and all teenagers') worst fears: we are weird. If our Solar System were observed with present-day Earth technology -- to put our system and exoplanets on the same footing -- Jupiter is the only planet ...
S. Raymond, A. Izidoro, A. Morbidelli
semanticscholar   +1 more source

Where can a Trappist-1 planetary system be produced? [PDF]

open access: yes, 2018
TJH is funded by an Imperial College London Junior Research Fellowship. CJC acknowledges support from the DISCSIM project, grant agreement 34113, 7 funded by the European Research Council under ERC-2013-ADG.
T. J. Haworth   +3 more
semanticscholar   +1 more source

The McDonald Accelerating Stars Survey: Architecture of the Ancient Five-planet Host System Kepler-444

open access: yesThe Astronomical Journal, 2023
We present the latest and most precise characterization of the architecture for the ancient (≈11 Gyr) Kepler-444 system, which is composed of a K0 primary star (Kepler-444 A) hosting five transiting planets and a tight M-type spectroscopic binary (Kepler-
Zhoujian Zhang   +13 more
doaj   +1 more source

Early Water Delivery to Terrestrial Planet Regions during the Stages of Jupiter’s Formation and Migration in the Grand Tack Model

open access: yesThe Planetary Science Journal, 2023
The formation and subsequent migration of gas giants could significantly affect the material mixing in the solar system. In this study, we use N -body simulations to investigate how much water is transported into the region of the terrestrial planet ...
Masahiro Ogihara   +2 more
doaj   +1 more source

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