Results 71 to 80 of about 1,415 (183)
Giant Planets from the Inside-Out
, 2022 40 pages, 16 figures. Review chapter submitted to Protostars and Planets VII, Editors: Shu-ichiro Inutsuka, Yuri Aikawa, Takayuki Muto, Kengo Tomida, and Motohide TamuraInternational audienceGiant planets acquire gas, ices and rocks during the early ...
Guillot, Tristan +5 more
core +1 more source
Jupiter’s Interior with an Inverted Helium Gradient
The Planetary Science JournalJupiter’s gravity field observed by NASA’s Juno spacecraft indicates that the density in the 10–100 GPa region is lower than one would expect from a H/He adiabat with 0.5–5× solar water abundance, as has been observationally inferred in Jupiter’s ...
N. Nettelmann, J. J. Fortney
doaj +1 more source
, 2014 This thesis investigates how increased global mean temperatures on Earth, induced by the increase in the luminosity of the Sun as it ages, change the types of habitable environments on the planet at local scales over the next 3 Gyr.
O'Malley-James, Jack T.
core
The Astrophysical Journal Supplement SeriesThe equation of state of hydrogen–helium (H–He) mixtures plays a vital role in the evolution and structure of gas giant planets and exoplanets. Recent equations of state that account for H–He interactions, coupled with H–He immiscibility curves, can now ...
Roberto Tejada Arevalo +3 more
doaj +1 more source
Can the giant planets of the Solar System form via pebble accretion in a smooth protoplanetary disc? [PDF]
Context. Prevailing N-body planet formation models typically start with lunar-mass embryos and show a general trend of rapid migration of massive planetary cores to the inner Solar System in the absence of a migration trap.
Lee, Man Hoi +8 more
core +1 more source
The Astronomical JournalThe present-day bulk elemental composition of an exoplanet can provide insight into a planet’s formation and evolutionary history. Such information is now being measured for dozens of planets with state-of-the-art facilities using Bayesian atmosphere ...
Joshua D. Lothringer +2 more
doaj +1 more source
The Astrophysical JournalContinuing our initiative on advancing the calculations of planetesimal accretion in the core-accretion model, we present here the results of our recent study of the contributions of planetesimals around and beyond the orbit of Saturn.
Nader Haghighipour +2 more
doaj +1 more source
From planetesimals to planets with N-body simulations in the giant-planet formation region
Astronomy & AstrophysicsThe cores of wide-orbit giant planets can form via pebble accretion if large planetesimals form in the outer regions of protoplanetary discs at sufficiently early times.
Lorek Sebastian, Lambrechts Michiel
doaj +1 more source
A Search for Wide-orbit Planets around M Dwarfs Using Deep MIRI 15 μm Images
The Astronomical JournalWide-orbit (>10 au) gas-giant planets shape the architecture of planetary systems, yet their occurrence rate remains poorly constrained. The James Webb Space Telescope (JWST) has obtained the deepest mid-infrared images of nearby stars to date through ...
Yihan Li +9 more
doaj +1 more source
The Astrophysical Journal LettersRecent observational constraints on the internal structure of Jupiter and Saturn suggest that these planets have “fuzzy” cores, i.e., gradients of the concentration of heavy elements that might span a large fraction of the planet’s radius.
J. R. Fuentes +3 more
doaj +1 more source