Results 1 to 10 of about 4,754,095 (214)
Sculpting the valley in the radius distribution of small exoplanets as a by-product of planet formation: the core-powered mass-loss mechanism. [PDF]
Mon Not R Astron Soc, 2019 Recent observations revealed a bimodal radius distribution of small, short-period exoplanets with a paucity in their occurrence, a radius 'valley', around 1.5-2.0 R⊕.
Gupta A, Schlichting HE.
europepmc +3 more sources
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
semanticscholar +1 more source
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
semanticscholar +1 more source
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
semanticscholar +1 more source
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
semanticscholar +1 more source
Connecting planet formation and astrochemistry [PDF]
Astronomy & Astrophysics, 2020 The chemical composition of planetary atmospheres has long been thought to store information regarding where and when a planet accretes its material. Predicting this chemical composition theoretically is a crucial step in linking observational studies to
A. Cridland +3 more
semanticscholar +1 more source
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
semanticscholar +1 more source
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
doaj +1 more source
The Astrophysical Journal Letters, 2023 We present a U-corrected Pb–Pb age of 4566.19 ± 0.20 Ma (1.11 ± 0.26 Myr after t _0 ) for the moderately volatile element rich, andesitic meteorite Erg Chech 002 (EC002). Our Al–Mg isochron defines a ^26 Al/ ^27 Al initial ratio of (8.65 ± 0.09) × 10 ^−6
J. N. Connelly +5 more
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