Results 11 to 20 of about 4,665,991 (250)
Understanding exoplanet formation, structure and evolution in 2010 [PDF]
Proceedings of the International Astronomical Union, 2010 In this short review, we summarize our present understanding (and non-understanding) of exoplanet formation, structure and evolution, in the light of the most recent discoveries.
G. Chabrier +2 more
semanticscholar +5 more sources
LkCa 15: A YOUNG EXOPLANET CAUGHT AT FORMATION? [PDF]
The Astrophysical Journal, 2011 Young and directly imaged exoplanets offer critical tests of planet-formation models that are not matched by radial velocity surveys of mature stars. These targets have been extremely elusive to date, with no exoplanets younger than 10–20 Myr and only a ...
Adam L. Kraus, Michael Ireland
semanticscholar +8 more sources
Characterization of exoplanets from their formation [PDF]
Astronomy and Astrophysics, 2012 A first characterization of many exoplanets has recently been achieved by the observational determination of their radius. For some planets, a measurement of the luminosity has also been possible, with many more directly imaged planets expected in the future.
C. Mordasini +5 more
+16 more sources
Atmospheric signatures of giant exoplanet formation by pebble accretion [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 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 disk can accrete substantial amounts of oxygen-rich ...
N. Madhusudhan +3 more
semanticscholar +6 more sources
Observational constraints on the formation and evolution of Neptune-class exoplanets [PDF]
Space Science Reviews, 2020, Volume 216, Issue 6, article id.105, 2021 Among exoplanets, the small-size population constitutes the dominant one, with a diversity of properties and compositions ranging from rocky to gas dominated envelope. While a large fraction of them have masses and radii similar to or smaller than Neptune, yet none share common properties in term of orbital period and insulation with our ice giants ...
Deleuil, Magali +4 more
arxiv +9 more sources
Transiting Exoplanet Atmospheres in the Era of JWST [PDF]
arXivThe field of exoplanet atmospheric characterization has recently made considerable advances with the advent of high-resolution spectroscopy from large ground-based telescopes and the commissioning of the James Webb Space Telescope (JWST). We have entered an era in which atmospheric compositions, aerosol properties, thermal structures, mass loss, and ...
E. Kempton, H. Knutson
arxiv +2 more sources
The timescale for giant planet formation : constraints from the rotational evolution of exoplanet host stars [PDF]
arXiv, 2008 The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models. We present here new constraints on planet formation timescales derived from the rotational evolution of exoplanet host stars.
J. Bouvier
arxiv +3 more sources
The Roman Microlensing Survey: Confirmation or Refutation of Gas Giant Exoplanet Formation Theories
The Astrophysical JournalExoplanet 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
On the local formation of the TRAPPIST-1 exoplanets [PDF]
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
+6 more sources
Rapid Formation of Jupiter and Wide-orbit Exoplanets in Disks with Pressure Bumps [PDF]
The Astrophysical Journal, 2021 Abstract The formation of gas-giant planets within the lifetime of a protoplanetary disk is challenging especially far from a star. A promising model for the rapid formation of giant-planet cores is pebble accretion in which gas drag during encounters leads to high accretion rates.
John Chambers
openalex +4 more sources