Results 101 to 110 of about 2,563,330 (219)
Three-dimensional Orbital Architectures and Detectability of Adjacent Companions to Hot Jupiters
The Astrophysical JournalThe orbital properties of the (as yet) small population of hot Jupiters with nearby planetary companions provide valuable constraints on the past migration processes of these systems.
Thomas MacLean, Juliette Becker
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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 +4 more
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Most Super-Earths Have Less Than 3% Water
The Astrophysical JournalSuper-Earths are highly irradiated, small planets with bulk densities approximately consistent with Earth. We construct combined interior atmosphere models of super-Earths that trace the partitioning of water throughout a planet, including an iron-rich ...
James G. Rogers +4 more
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The Astrophysical Journal LettersThe recent discovery of “ultrahot” ( P < 1 day) Neptunes has come as a surprise: some of these planets have managed to retain gaseous envelopes despite being close enough to their host stars to trigger strong photoevaporation and/or Roche lobe overflow ...
Shreyas Vissapragada +18 more
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Evolution of Exoplanet Detection Techniques
The discovery of exoplanets has transformed modern astrophysics, offering crucial insights helping us to understand planetary systems beyond our own. This paper reviews the various methods of exoplanet detection, outlining how these methods have improved and raised our understanding about the characteristics of these exoplanets.
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Helium in the Extended Atmosphere of the Warm Superpuff TOI-1420b
The Astronomical JournalSuperpuffs are planets with exceptionally low densities ( ρ ≲ 0.1 g cm ^−3 ) and core masses ( M _c ≲ 5 M _⊕ ). Many lower-mass ( M _p ≲ 10 M _⊕ ) superpuffs are expected to be unstable to catastrophic mass loss via photoevaporation and/or boil-off ...
Shreyas Vissapragada +13 more
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Do Super-puffs Defy Core Accretion? Population-wide Interior Structure Constraints
The Astrophysical JournalSub-Saturn mass planets with extremely low bulk densities ( ρ ≲ 0.3 g cm ^−3 ), or “super-puffs,” are one of the most interesting and least understood populations of exoplanets.
Nicholas T. Marston +2 more
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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 ...
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The Exoplanet Orbit Database [PDF]
, 2011 We present a database of well-determined orbital parameters of exoplanets, and their host stars’ properties. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements ...
N. Piskunov +21 more
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Sub-Neptune Memories. I. Implications of Inefficient Mantle Cooling and Silicate Rain
The Astrophysical JournalWe explore the evolution of sub-Neptune (radii between ∼1.5 and 4 R _⊕ ) exoplanet interior structures using our upgraded evolution code, APPLE , which self-consistently couples the thermal and compositional evolution of the whole structure.
Roberto Tejada Arevalo +5 more
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