Results 31 to 40 of about 3,219 (219)
THE FORMATION OF URANUS AND NEPTUNE: CHALLENGES AND IMPLICATIONS FOR INTERMEDIATE-MASS EXOPLANETS [PDF]
The Astrophysical Journal, 2014 In this paper we investigate the formation of Uranus and Neptune, according to the core-nucleated accretion model, considering formation locations ranging from 12 to 30 AU from the Sun, and with various disk solid-surface densities and core accretion rates.
Ravit Helled, Peter Bodenheimer
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Atmospheres of brown dwarfs [PDF]
, 2014 ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
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The Exoplanet Radius Gap in the Gaia Era [PDF]
, 2022 From the determination of the first occurrence rates by the Kepler Mission, small planets (1.8 Earth radii) — was confirmed when the California-Kepler Survey precisely determined the properties of >1000 host stars hosting >2000 planets. Today, in the era
Berger, Travis A
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On the Local Formation of the TRAPPIST-1 Exoplanets
The Astronomical JournalAbstract The discovery of seven approximately Earth-mass planets orbiting the 0.09 M ⊙ M dwarf TRAPPIST-1 captivated the public and sparked a proliferation of investigations into the system’s origins. Among other properties, the resonant architecture of the planets has been interpreted to imply that orbital migration ...
Matthew S. Clement +2 more
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Democratizing & Enhancing Exoplanet Research with the Unistellar Citizen Science Network & Astronomy Modeling Instruction [PDF]
This thesis explores the potential in democratizing and augmenting exoplanet research via citizen science by utilizing a global network of portable image-intensified computerized telescopes, and inquiry-based astronomy instruction. A central objective is
Peluso, Daniel O’Conner
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Disk evolution, element abundances and cloud properties of young gas giant planets [PDF]
, 2014 ChHc and PBR highlights financial support of the European Community under the FP7 program by an ERC starting grant. PW, IK, and WFT acknowledge funding from the European Union Seventh Framework Programme FP7-2011 under grant agreement No.
Kamp, I. +19 more
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Exoplanet weather and climate regimes with clouds and thermal ionospheres [PDF]
, 2022 Context. Gaseous exoplanets are the targets that enable us to explore fundamentally our understanding of planetary physics and chemistry. With observational efforts moving from the discovery into the characterisation mode, systematic campaigns that cover
Robin Baeyens +29 more
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The Astronomical Journal, 2023 Accreting protoplanets are windows into planet formation processes, and high-contrast differential imaging is an effective way to identify them. We report results from the Giant Accreting Protoplanet Survey (GAPlanetS), which collected H α differential ...
Katherine B. Follette +23 more
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THE INFLUENCE OF MAGNETIC FIELD GEOMETRY ON THE FORMATION OF CLOSE-IN EXOPLANETS [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT Approximately half of Sun-like stars harbor exoplanets packed within a radius of ∼0.3 au, but the formation of these planets and why they form in only half of known systems are still not well understood. We employ a one-dimensional steady-state model to gain physical insight into the origin of these close-in exoplanets.
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The eccentricity-mass distribution of exoplanets: signatures of different formation mechanisms? [PDF]
Astronomy & Astrophysics, 2007 We examine the distributions of eccentricity and host star metallicity of exoplanets as a function of their mass. Planets with M sin i >~ 4 M_J have an eccentricity distribution consistent with that of binary stars, while planets with M sin ...
Ribas, Ignasi, Miralda-Escude, Jordi
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