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Perspectives of Earth and Space Scientists, Volume 5, Issue 1, December 2024.Abstract Standard notions of an “Earthlike” planet rely solely on physical and material properties, like planetary mass, radius, and surface temperature. Here, we introduce a novel, relational perspective on what defines “Earthlikeness.” In our process‐based framework, rocky planets are local pockets of free energy that have the potential to drive the ...
Michael L. Wong +4 more
wiley +1 more source
Quarterly Journal of the Royal Meteorological Society, Volume 144, Issue 717, Page 2537-2557, October 2018 Part B., 2018 The regimes of global atmospheric circulation patterns in an Earth‐like atmosphere are explored as a function of rotation rate Ω, thermal contrast, and other parameters expressed in dimensionless form, using a simplified GCM based on the University of Hamburg's Portable University Model for the Atmosphere.
Yixiong Wang +3 more
wiley +1 more source
On the Exoplanet Yield of Gaia Astrometry
The Astronomical JournalWe reexamine the expected yield of Gaia astrometric planet detections using updated models for giant-planet occurrence, the local stellar population, and Gaia’s demonstrated astrometric precision. Our analysis combines a semianalytic model that clarifies
Caleb Lammers, Joshua N. Winn
doaj +1 more source
Grain opacity and the bulk composition of extrasolar planets. I. Results from scaling the ISM opacity [PDF]
, 2014 The opacity due to grains in the envelope of a protoplanet regulates the accretion rate of gas during formation, thus the final bulk composition of planets with primordial H/He is a function of it.
Alibert, Y. +4 more
core +2 more sources
Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014 The perturbation caused by planet‐moon binarity on the time‐of‐arrival (TOA) signal of a pulsar with an orbiting planet is derived for the case of the orbit of the planet‐moon system inclined of an angle α with respect to the plane of the orbit of the planet‐moon barycenter around the pulsar.
Antonio Pasqua +2 more
wiley +1 more source
The Astrophysical JournalMeasuring the atmospheric composition of hazy sub-Neptunes like GJ 1214b through transmission spectroscopy is difficult because of the degeneracy between mean molecular weight (MMW) and haziness.
Maria E. Steinrueck +15 more
doaj +1 more source
JWST Measurements of 13C, 18O, and 17O in the Atmosphere of Super-Jupiter VHS 1256 b
The Astrophysical Journal Letters, 2023 Isotope ratios have recently been measured in the atmospheres of directly imaged and transiting exoplanets from ground-based observations. The arrival of JWST allows us to characterize exoplanetary atmospheres in further detail and opens up wavelengths ...
Siddharth Gandhi +6 more
doaj +1 more source
Knudsen effusion mass spectrometry: Current and future approaches
Rapid Communications in Mass Spectrometry, Volume 38, Issue 14, 30 July 2024.Rationale Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.
Nathan S. Jacobson +4 more
wiley +1 more source
The Astronomical JournalWe report the discovery and confirmation of the Transiting Exoplanet Survey Satellite (TESS) single-transit, warm and dense sub-Saturn, TIC 139270665 b. This planet is unusually dense for its size: with a bulk density of 2.13 g cm ^−3 (0.645 R _J , 0.463
Daniel O’Conner Peluso +62 more
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The Planetary Science Journal, 2022 Current knowledge of the Uranian system is limited to observations from the flyby of Voyager 2 and limited remote observations. However, Uranus remains a highly compelling scientific target due to the unique properties of many aspects of the planet ...
Ian J. Cohen +36 more
doaj +1 more source