Results 31 to 40 of about 1,751 (120)
FastIsostasy v1.0 – a regional, accelerated 2D glacial isostatic adjustment (GIA) model accounting for the lateral variability of the solid Earth [PDF]
Geoscientific Model DevelopmentThe vast majority of ice-sheet modelling studies rely on simplified representations of the glacial isostatic adjustment (GIA), which, among other limitations, do not account for lateral variations in the lithospheric thickness and upper-mantle viscosity.
J. Swierczek-Jereczek +8 more
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Toward Robust Corrections for Stellar Contamination in JWST Exoplanet Transmission Spectra
The Astronomical JournalTransmission spectroscopy is still the preferred characterization technique for exoplanet atmospheres, although it presents unique challenges that translate into characterization bottlenecks when robust mitigation strategies are missing.
Benjamin V. Rackham, Julien de Wit
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In Situ Formation of the Cold Classical Kuiper Belt
The Astrophysical JournalCold classical Kuiper Belt objects (CCKBOs) are considered first-generation planetesimals that formed 42–47 au from the Sun and have remained untouched since. Formation is thought to proceed by clumping of dust particles in protoplanetary disk gas by the
Rixin Li, Eugene Chiang
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Sub-Neptunes Are Drier than They Seem: Rethinking the Origins of Water-rich Worlds
The Astrophysical Journal LettersRecent claims of biosignature gases in sub-Neptune atmospheres have renewed interest in water-rich sub-Neptunes with surface oceans, often referred to as Hycean planets. These planets are hypothesized to form beyond the snow line, accreting large amounts
Aaron Werlen +5 more
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Seismic Oscillations Excited by Giant Impacts in Directly Imaged Giant Planets
The Astrophysical JournalThe radii and masses of many giant exoplanets imply their interiors each contain more than ∼100 M _⊕ of solids. A large metal content may arise when a giant planet grows by colliding and merging with multiple ∼10 M _⊕ solid cores.
J. J. Zanazzi, Eugene Chiang, Yifan Zhou
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Space based microlensing planet searches
EPJ Web of Conferences, 2013 The discovery of extra-solar planets is arguably the most exciting development in astrophysics during the past 15 years, rivalled only by the detection of dark energy.
Tisserand Patrick +2 more
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Axisymmetric High Spot Coverage on Exoplanet Host HD 189733 A
The Astronomical JournalTransmission spectroscopy is a powerful tool to study exoplanet atmospheres, which can be affected by the ability of stellar photospheric heterogeneity to mimic or mask exoplanetary spectral signatures.
Isaac S. Narrett +2 more
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Nature Communications, 2019 A planetary-scale streak structure in the Venusian lower-cloud layer was observed by the Akatsuki orbiter. Here the authors present numerical simulations that reproduce such structure and reveal that a low-stability layer, which induces baroclinic ...
Hiroki Kashimura +12 more
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Empirically Constraining the Spectra of Stellar Surface Features Using Time-resolved Spectroscopy
The Astrophysical Journal LettersTransmission spectroscopy is currently the technique best suited to study a wide range of planetary atmospheres, leveraging the filtering of a star’s light by a planet’s atmosphere rather than its own emission.
David Berardo +2 more
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A Radially Resolved Magnetic Field Threading the Disk of TW Hya
The Astrophysical Journal LettersWe present a new approach to detecting and characterizing a magnetic field in protoplanetary disks through the differential broadening of unpolarized molecular emission from CN.
Richard Teague +7 more
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