Results 91 to 100 of about 2,175 (190)
Tides Tighten the Hycean Habitable Zone
The Astrophysical Journal LettersHycean planets—exoplanets with substantial water ice layers, deep surface oceans, and hydrogen-rich atmospheres—are thought to be favorable environments for life. Due to a relative paucity of atmospheric greenhouse gases, hycean planets have been thought
Joseph R. Livesey +2 more
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The Astrophysical JournalUnderstanding the optical properties of exoplanet cloud particles is a top priority. Many cloud condensates form as nonspherical particles and their optical properties can be very different from those of spheres. In this study, we focus on KCl particles,
Colin D. Hamill +7 more
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Effect of Core Cooling on the Radius of Sub-Neptune Planets
, 2017 Sub-Neptune planets are very common in our galaxy and show a large diversity in their mass-radius relation. In sub-Neptunes most of the planet mass is in the rocky part (hereafter core) which is surrounded by a modest hydrogen-helium envelope.
Dominik, C., Ormel, C. W., Vazan, A.
core +2 more sources
Basin Research, Volume 36, Issue 3, May–June 2024.The influence of sediment provenance and depositional setting on chlorite formation in the Agat Formation. Abstract Chlorite minerals, mainly in the form of clay coats, play a critical role in determining the reservoir quality of siliciclastic rocks. They can positively influence reservoir quality by preserving porosity during deep burial, but they can
Fares Azzam +8 more
wiley +1 more source
An m sin i = 24 Earth Mass Planetary Companion To The Nearby M Dwarf GJ 176
, 2007 We report the detection of a planetary companion with a minimum mass of m sin i = 0.0771 M_Jup = 24.5 M_Earth to the nearby (d = 9.4 pc) M2.5V star GJ 176.
Alan P. Boss +8 more
core +1 more source
Dust Unveils the Formation of a Mini-Neptune Planet in a Protoplanetary Ring
The Astronomical Journal, 2019 Abstract Rings and radial gaps are ubiquitous in protoplanetary disks, yet their possible connection to planet formation is currently subject to intense debates. In principle, giant planet formation leads to wide gaps that separate the gas and dust mass reservoir in the outer disk, while lower mass planets lead to shallow gaps that are ...
Sebastián Pérez +5 more
openaire +3 more sources
TOI-712: An adolescent, multi-planet system hosting three transiting mini-Neptunes
, 2021 {"references": ["Eastman, J. D., Rodriguez, J. E., Agol, E., et al. 2019, arXiv e-prints, arXiv: 1907.09480", "Hippke, M., & Heller, R. 2019, A&A, 623, A39, doi: 10.1051/0004-6361/201834672", "Mamajek, E. E., & Hillenbrand, L. A. 2008, ApJ, 687, 1264, doi: 10.1086/591785", "Mann, A. W., Gaidos, E., Mace, G. N., et al.
Vach, Sydney +6 more
openaire +1 more source
The TESS-Keck Survey. XVIII. A Sub-Neptune and Spurious Long-period Signal in the TOI-1751 System
The Astronomical JournalWe present and confirm TOI-1751 b, a transiting sub-Neptune orbiting a slightly evolved, solar-type, metal-poor star ( T _eff = 5996 ± 110 K, $\mathrm{log}(g)=4.2\pm 0.1$ , V = 9.3 mag, [Fe/H] = −0.40 ± 0.06 dex) every 37.47 days.
Anmol Desai +39 more
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A Framework for Quantifying the Degeneracies of Exoplanet Interior Compositions
, 2010 Several transiting super-Earths are expected to be discovered in the coming few years. While tools to model the interior structure of transiting planets exist, inferences about the composition are fraught with ambiguities.
Rogers, L. A., Seager, S.
core +1 more source
Parent Stars of Extrasolar Planets. XV. Host Star Rotation Revisited with {\it Kepler} Data
, 2015 We employed published rotation periods of {\it Kepler} field stars to test whether stars hosting planets tend to rotate more slowly than stars without known planets.
Gonzalez, Guillermo
core +1 more source