Results 81 to 90 of about 1,114 (198)

Resonant and Ultra-short-period Planet Systems Are at Opposite Ends of the Exoplanet Age Distribution

The Astronomical Journal
Exoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual systems.
Stephen P. Schmidt, Kevin C. Schlaufman, Jacob H. Hamer   +2 more
doaj   +1 more source

Peas-in-a-pod across the Radius Valley: Rocky Systems Are Less Uniform in Mass but More Uniform in Size and Spacing

The Astrophysical Journal Letters
The ubiquity of “peas-in-a-pod” architectural patterns and the existence of the radius valley each presents a striking population-level trend for planets with R _p ≤ 4 R _⊕ that serves to place powerful constraints on the formation and evolution of these
Armaan V. Goyal, Songhu Wang
doaj   +1 more source

The effects of terrestrial exoplanet bulk composition on long-term planetary evolution 

, 2022
Rob Spaargaren, Maxim Ballmer, S. J. Mojzsis, Paul Tackley   +3 more
openalex   +1 more source

Interior Evolution of Magma Oceans Exoplanets

The magma ocean (MO) phase typically describes the early stage of rocky planets, during which the entire planet is molten due to heat generated by accretion processes. In the case of short-period exoplanets inside the runaway greenhouse limit, this phase may last Gyrs, until the inventory of major greenhouse gasses, such as H2O and H2, is exhausted ...
Mariana Sastre, Tim Lichtenberg, Harrison Nicholls, Dan Bower, Inga Kamp   +4 more
openaire   +2 more sources

Formation and evolution of exoplanets in different environments

, 2017
Invited Review. To appear in Astronomical Society of the Pacific (ASP) Conference Series "Non-Stable Universe: Energetic Resources, Activity Phenomena and Evolutionary Processes" dedicated to the 70th anniversary of Byurakan Astrophysical ...
openaire   +2 more sources

Exoplanet atmosphere evolution: emulation with random forests. [PDF]

, 2021
James G. Rogers, Clàudia Janó Muñoz, James E. Owen, Richard A Booth   +3 more
openalex  

EUV influences on exoplanet atmospheric stability and evolution

, 2019
The planetary effective surface temperature alone is insufficient to characterize exoplanet atmospheres and their stability or evolution. Considering the star-planet system as a whole is necessary, and a critical component of the system is the photoionizing stellar extreme ultraviolet emission (EUV; 100-912 ).
Youngblood, Allison, France, Kevin, Koskinen, Tommi, Fossati, Luca, Amerstorfer, Ute, Lichtenegger, Herbert, Drake, Jeremy, Mason, James, Fleming, Brian, Allred, Joel, Berta-Thompson, Zachory, Bourrier, Vincent, Froning, Cynthia, Garraffo, Cecilia, Gronoff, Guillaume, Jin, Meng, Kowalski, Adam, Osten, Rachel   +17 more
openaire   +2 more sources

Far-ultraviolet Flares and Variability of the Young M Dwarf AU Mic: A Nondetection of Planet C in Transit at Lyα

The Astronomical Journal
Atmospheric escape’s potential to shape the exoplanet population motivates detailed observations of systems actively undergoing escape. AU Mic is a young and active M dwarf hosting two close-in transiting sub- to Neptune-sized planets. Atmospheric escape
Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood, Girish M. Duvvuri, Emily A. Gilbert, Peter Plavchan, Peter Gao, Hans-R. Müller, Adina D. Feinstein, Thomas Barclay, Eric D. Lopez   +10 more
doaj   +1 more source

Interior and Climate Modeling of the Venus Zone Planet TOI-2285 b

The Astronomical Journal
As the discovery of exoplanets progresses at a rapid pace, the large number of known planets provides a pathway to assess the stellar and planetary properties that govern the climate evolution of terrestrial planets.
Emma L. Miles, Colby Ostberg, Stephen R. Kane, Ondrea Clarkson, Cayman T. Unterborn, Tara Fetherolf, Michael J. Way, Sadie G. Welter   +7 more
doaj   +1 more source

Pushing the envelope of exoplanet evolution modelling

, 2021
Propelled by the discovery of the first exoplanet thirty years ago, the scientific community has rallied and made tremendous strides towards a full understand of the formation and evolution of planetary systems. During this period, over 4, 300 confirmed exoplanets have been detected, and the resulting dataset has driven a revolution by allowing for new
openaire   +1 more source