Results 11 to 20 of about 129,721 (164)
Forming Gas Giants around a Range of Protostellar M-dwarfs by Gas Disk Gravitational Instability [PDF]
The Astrophysical Journal, 2023 Recent discoveries of gas giant exoplanets around M-dwarfs from transiting and radial velocity surveys are difficult to explain with core-accretion models. We present here a homogeneous suite of 162 models of gravitationally unstable gaseous disks. These
Alan P. Boss, Shubham Kanodia
doaj +2 more sources
The California Legacy Survey. IV. Lonely, Poor, and Eccentric: A Comparison between Solitary and Neighborly Gas Giants [PDF]
The Astrophysical Journal Supplement Series, 2023 We compare systems with single giant planets to systems with multiple giant planets using a catalog of planets from a high-precision radial velocity survey of FGKM stars.
Lee J. Rosenthal +3 more
doaj +2 more sources
Resolving the Super-Earth/Gas Giant Connection in Stellar Mass and Metallicity [PDF]
The Astrophysical Journal LettersThe observed correlation between inner super-Earths (SE) and outer gas giants (GG) places strong constraints on formation theories. Building on previous work, M. L. Bryan & E. J.
Marta L. Bryan, Eve J. Lee
doaj +2 more sources
Metallicity Dependence of Giant Planets around M Dwarfs [PDF]
The Astrophysical Journal Supplement SeriesWe investigate the stellar metallicity ([Fe/H] and [M/H]) dependence of giant planets around M dwarfs by comparing the metallicity distribution of 746 field M dwarfs without known giant planets with a sample of 22 M dwarfs hosting confirmed giant planets.
Tianjun Gan +4 more
doaj +2 more sources
Friends Not Foes: Strong Correlation between Inner Super-Earths and Outer Gas Giants [PDF]
The Astrophysical Journal LettersThe connection between outer gas giants and inner super-Earths reflects their formation and evolutionary histories. Past work exploring this link has suggested a tentative positive correlation between these two populations, but these studies have been ...
Marta L. Bryan, Eve J. Lee
doaj +2 more sources
THE TWO MODES OF GAS GIANT PLANET FORMATION [PDF]
Astrophys.J.695:L53-L57,2009, 2009 I argue for two modes of gas giant planet formation and discuss the conditions under which each mode operates. Gas giant planets at disk radii $r>100$ AU are likely to form in situ by disk instability, while core accretion plus gas capture remains the dominant formation mechanism for $r<100$ AU.
Aaron C. Boley
openalex +2 more sources
Embryo impacts and gas giant mergers – II. Diversity of hot Jupiters’ internal structure [PDF]
, 2014 We consider the origin of compact, short-period, Jupiter-mass planets. We propose that their diverse structure is caused by giant impacts of embryos and super-Earths or mergers with other gas giants during the formation and evolution of these hot Jupiters. Through a series of numerical simulations, we show that typical head-on collisions generally lead
Shang-Fei Liu +3 more
openalex +2 more sources
Inner Super-Earths, Outer Gas Giants: How Pebble Isolation and Migration Feedback Keep Jupiters Cold [PDF]
, 2018 The majority of gas giants (planets of masses $\gtrsim10^2 M_\oplus$) are found to reside at distances beyond $\sim1$ au from their host stars. Within 1 au, the planetary population is dominated by super-Earths of $2-20 M_\oplus$. We show that this dichotomy between inner super-Earths and outer gas giants can be naturally explained should they form in ...
Jeffrey Fung, Eve J. Lee
openalex +2 more sources
On the mass of gas giant planets: Is Saturn a failed gas giant? [PDF]
A&A 675, L8 (2023), 2023 The formation history of giant planets inside and outside the solar system remains unknown. We suggest that runaway gas accretion is initiated only at a mass of ~100 M_Earth and that this mass corresponds to the transition to a gas giant, a planet that its composition is dominated in hydrogen and helium. Delaying runaway accretion to later times (a few
arxiv +1 more source
What Can Meteorites Tell Us About the Formation of Jupiter?
AGU Advances, 2021 Gas giants like Jupiter are a fundamental component of planetary systems, but how they formed has been uncertain. Here we discuss how paleomagnetic records in meteorites of the solar nebula may tell us about Jupiter's final growth stage.
Benjamin P. Weiss, William F. Bottke
doaj +1 more source