Results 21 to 30 of about 1,218 (212)

Atmospheric signatures of giant exoplanet formation by pebble accretion [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
Atmospheric chemical abundances of giant planets lead to important constraints on planetary formation and migration. Studies have shown that giant planets that migrate through the protoplanetary disc can accrete substantial amounts of oxygen-rich planetesimals, leading to supersolar metallicities in the envelope and solar or subsolar C/O ratios. Pebble
Nikku Madhusudhan   +2 more
exaly   +4 more sources

On the Local Formation of the TRAPPIST-1 Exoplanets

open access: goldThe Astronomical Journal
Abstract 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
openalex   +4 more sources

The eccentricity-mass distribution of exoplanets: signatures ofdifferent formation mechanisms? [PDF]

open access: bronzeAstronomy & 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 ...
I. Ribas, Jordi Miralda‐Escudé
openalex   +3 more sources

The Clear Sky Corridor: Insights Towards Aerosol Formation in Exoplanets Using an AI-based Survey of Exoplanet Atmospheres

open access: goldThe Astronomical Journal
Abstract Producing optimized and accurate transmission spectra of exoplanets from telescope data has traditionally been a manual and labor intensive procedure. Here we present the results of the first attempt to improve and standardize this procedure by using artificial-intelligence-based (AI-based) processing of light curves and ...
Reza Ashtari   +6 more
openalex   +4 more sources

Planet Formation Theory in the Era of ALMA and Kepler: from Pebbles to Exoplanets [PDF]

open access: greenASP Conference Series, 2022
38 pages, 13 figures, review chapter accepted to Protostars and Planets VII, editors: Shu-ichiro Inutsuka, Yuri Aikawa, Takayuki Muto, Kengo Tomida, and Motohide Tamura, corrected label in Fig ...
Joanna Drążkowska   +9 more
openalex   +4 more sources

Formation, Evolution and Multiplicity of Brown Dwarfs and Giant Exoplanets [PDF]

open access: green, 2010
"Highlights of Spanish Astrophysics V", Proceedings of the VIII Scientific Meeting of the Spanish Astronomical Society (SEA) held in Santander, 7-11 July, 2008. Edited by J. Gorgas, L. J. Goicoechea, J. I. Gonzalez-Serrano, J. M. Diego.
J. A. Caballero
openalex   +4 more sources

The Roman Microlensing Survey: Confirmation or Refutation of Gas Giant Exoplanet Formation Theories

open access: yesThe Astrophysical Journal
Exoplanet research has moved from the discovery of new classes of planets toward creating a census of exoplanet population demographics across the spectrum of exoplanet and host star masses.
Alan P. Boss
doaj   +2 more sources

A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates

open access: yesGeophysical Monograph Series, Page 47-54., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky   +2 more
wiley  

+2 more sources

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