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 +3 more
openalex +4 more sources
TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain
The Astronomical Journal, 2023 Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. We present TOI-1136, a 700 ±
Fei Dai +62 more
doaj +1 more source
A JWST NIRSpec Phase Curve for WASP-121b: Dayside Emission Strongest Eastward of the Substellar Point and Nightside Conditions Conducive to Cloud Formation [PDF]
Astrophysical Journal Letters, 2023 We present the first exoplanet phase-curve measurement made with the JWST NIRSpec instrument, highlighting the exceptional stability of this newly commissioned observatory for exoplanet climate studies.
T. Mikal-Evans +12 more
semanticscholar +1 more source
The Mass Budgets and Spatial Scales of Exoplanet Systems and Protoplanetary Disks [PDF]
Astrophysical Journal, 2021 Planets are born from disks of gas and dust, and observations of protoplanetary disks are used to constrain the initial conditions of planet formation.
G. Mulders +3 more
semanticscholar +1 more source
A Stellar Mass Dependence of Structured Disks: A Possible Link with Exoplanet Demographics [PDF]
, 2021 Gaps in protoplanetary disks have long been hailed as signposts of planet formation. However, a direct link between exoplanets and disks remains hard to identify.
N. van der Marel, G. Mulders
semanticscholar +1 more source
The ARCiS framework for Exoplanet Atmospheres: The Cloud Transport Model [PDF]
, 2019 Understanding of clouds is instrumental in interpreting current and future spectroscopic observations of exoplanets. Modelling clouds consistently is complex, since it involves many facets of chemistry, nucleation theory, condensation physics ...
Min, Michiel, Ormel, Chris W.
core +2 more sources
Aerosols in Exoplanet Atmospheres [PDF]
Journal of Geophysical Research: Planets, 2021 Observations of exoplanet atmospheres have shown that aerosols, like in the solar system, are common across a variety of temperatures and planet types. The formation and distribution of these aerosols are inextricably intertwined with the composition and
P. Gao +3 more
semanticscholar +1 more source
The eccentricity-mass distribution of exoplanets: signatures ofdifferent 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 ...
I. Ribas, Jordi Miralda‐Escudé
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HD3651B: the first directly imaged brown dwarf companion of an exoplanet host star [PDF]
, 2006 In the course of our ongoing multiplicity study of exoplanet host stars we detected a faint companion located at ~43arcsec (480AU physical projected separation) north-west of its primary -- the exoplanet host star HD3651 at 11pc.
Mazeh, T. +3 more
core +3 more sources
Ranges of Atmospheric Mass and Composition of Super Earth Exoplanets [PDF]
, 2008 Terrestrial-like exoplanets may obtain atmospheres from three primary sources: Capture of nebular gases, degassing during accretion, and degassing from subsequent tectonic activity.
Burbine T. H. +5 more
core +1 more source