Results 11 to 20 of about 5,220,245 (377)
ExoFrontiers, 2021 Our galaxy is full with planets. We now know that planets and planetary systems are diverse and come with different sizes, masses and compositions, as well as various orbital architectures.
R. Helled, A. Morbidelli
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Challenges in planet formation [PDF]
Journal of Geophysical Research: Planets, 2016 Over the past two decades, large strides have been made in the field of planet formation. Yet fundamental questions remain. Here we review our state of understanding of five fundamental bottlenecks in planet formation.
A. Morbidelli, S. Raymond
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Inside-out Planet Formation. IV. Pebble Evolution and Planet Formation Timescales [PDF]
The Astrophysical Journal, 2017 Systems with tightly packed inner planets (STIPs) are very common. Chatterjee & Tan proposed Inside-out Planet Formation (IOPF), an in situ formation theory, to explain these planets.
X. Hu 胡 +6 more
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Terrestrial planet formation. [PDF]
Proc Natl Acad Sci U S A, 2011 Advances in our understanding of terrestrial planet formation have come from a multidisciplinary approach. Studies of the ages and compositions of primitive meteorites with compositions similar to the Sun have helped to constrain the nature of the building blocks of planets.
Righter K, O'Brien DP.
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Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results [PDF]
Astrophysical Journal, 2023 We present an overview of the Large Program, “Early Planet Formation in Embedded Disks (eDisk),” conducted with the Atacama Large Millimeter/submillimeter Array (ALMA).
N. Ohashi +36 more
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Interpreting the Atmospheric Composition of Exoplanets: Sensitivity to Planet Formation Assumptions [PDF]
Astrophysical Journal, 2022 Constraining planet formation based on the atmospheric composition of exoplanets is a fundamental goal of the exoplanet community. Existing studies commonly try to constrain atmospheric abundances, or to analyze what abundance patterns a given ...
P. Mollière +15 more
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Efficient planet formation by pebble accretion in ALMA rings [PDF]
Monthly notices of the Royal Astronomical Society, 2022 In the past decade, ALMA observations have revealed that a large fraction of protoplanetary discs contains rings in the dust continuum. These rings are the locations where pebbles accumulate, which is beneficial for planetesimal formation and ...
Haochang Jiang, C. Ormel
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Dust masses of young disks: constraining the initial solid reservoir for planet formation [PDF]
Astronomy & Astrophysics, 2020 What is the initial reservoir of mass available for making planets? This key question for planet formation got even more relevant when the measured masses of the Class II disks (1-3 Myr old) were found consistently smaller than what is needed for the ...
Ł. Tychoniec +9 more
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Impact Induced Oxidation and Its Implications for Early Mars Climate
Geophysical Research Letters, 2023 H2 in a CO2 atmosphere may serve as a potential solution to the early Mars climate paradox, but its unknown sources cast doubts on the proposed mechanism. Impact cratering is an energetic process that may modify the surface redox budget.
Lu Pan, Zhengbin Deng, Martin Bizzarro
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Possible evidence of ongoing planet formation in AB Aurigae [PDF]
Astronomy & Astrophysics, 2020 Context. Planet formation is expected to take place in the first million years of a planetary system through various processes, which remain to be tested through observations. Aims. With the recent discovery, using ALMA, of two gaseous spiral arms inside
A. Boccaletti +10 more
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