Results 91 to 100 of about 54,418 (256)

Thermophysical States of MgSiO3 Liquid up to Terapascal Pressures: Implications for Magma Oceans in Super‐Earths and Sub‐Neptunes

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Thermophysical properties of silicate liquids under extreme conditions are critical for understanding the accretion and evolution of super‐Earths and sub‐Neptunes. The thermal equation of state and viscosity of silicate liquids determine the adiabatic profiles and dynamics of magma oceans. However, these properties are challenging to constrain
Haiyang Luo, Jie Deng
wiley   +1 more source

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research [PDF]

Publications of the Astronomical Society of the Pacific, 2013
We describe the contents and functionality of the NASA Exoplanet Archive, a database and tool set funded by NASA to support astronomers in the exoplanet community. The current content of the database includes interactive tables containing properties of all published exoplanets, Kepler planet candidates, threshold-crossing events, data validation ...
Akeson, R. L., Chen, X., Ciardi, D., Crane, M., Good, J., Harbut, M., Jackson, E., Kane, S. R., Laity, A. C., Leifer, S., Lynn, M., McElroy, D. L., Papin, M., Plavchan, P., Ramirez, S. V., Rey, R., von Braun, K., Wittman, M., Abajian, M., Ali, B., Beichman, C., Beekley, A., Berriman, G. B., Berukoff, S., Bryden, G., Chan, B., Groom, S., Lau, C., Payne, A. N., Regelson, M., Saucedo, M., Schmitz, M., Stauffer, J., Wyatt, P., Zhang, A.   +34 more
openaire   +4 more sources

Classifying Exoplanets with a Gaussian Mixture Model

The Open Journal of Astrophysics, 2018
Recently, Odrzywolek and Rafelski have found three distinct categories of exoplanets, when they are classified based on density. We first carry out a similar classification of exoplanets according to their density using the Gaussian Mixture Model ...
Soham Kulkarni, Shantanu Desai
doaj   +1 more source

Exoplanet Vision 2050 [PDF]

arXiv, 2019
Is there any hope for us to draw a plausible picture of the future of exoplanet research? Here we extrapolate from the first 25 years of exoplanet discovery into the year 2050. If the power law for the cumulative exoplanet count continues, then almost 100,000,000 exoplanets would be known by 2050. Although this number sounds ridiculously large, we find
arxiv  

Illusion and Reality in the Atmospheres of Exoplanets

, 2017
The atmospheres of exoplanets reveal all their properties beyond mass, radius, and orbit. Based on bulk densities, we know that exoplanets larger than 1.5 Earth radii must have gaseous envelopes, hence atmospheres.
Adams, Anglada-Escude, Atreya, Bean, Beichman, Benneke, Berdyugina, Birkby, Bott, Brewer, Brogi, Brogi, Burrows, Cash, Charbonneau, Charbonneau, Charbonneau, Charbonneau, Chilcote, Collier-Cameron, Cowan, Cowan, Cowan, Cowan, Cowan, Crossfield, Crossfield, Crossfield, Crouzet, Crouzet, Currie, Deming, Deming, Deming, Deming, Deming, Demory, Demory, Demory, Demory, Des Marais, Diamond-Lowe, Ehrenreich, Elkins-Tanton, Esteves, Evans, Ford, Fortney, Fortney, Fraine, Gandolfi, Garcia Munoz, Gibson, Greene, Grillmair, Guillot, Hansen, Haynes, Helling, Heng, Heng, Heng, Henry, Hui, Huitson, Huitson, Hunten, Ingalls, Ingraham, Jensen, Kataria, Kipping, Knutson, Knutson, Knutson, Knutson, Knutson, Konopacky, Kreidberg, Kreidberg, Kreidberg, Lammer, Laughlin, Lewis, Lewis, Line, Line, Line, Lockwood, Lodders, Lopez, Lovis, Machalek, Macintosh, Madhusudhan, Madhusudhan, Madhusudhan, Madhusudhan, Majeau, Mandell, Marley, Marley, Marois, Masuda, Maxted, Mayor, McCullough, Miller-Ricci, Misra, Morris, Nikolov, Nikolov, Nikolov, Nymeyer, Oberg, Parmentier, Perez-Becker, Rajan, Redfield, Rogers, Rowe, Schaefer, Schaefer, Schaefer, Schwartz, Seager, Seager, Seager, Seager, Seager, Seager, Seager, Seager, Sheets, Showman, Sidis, Sing, Sing, Sing, Snellen, Snellen, Snellen, Spitzer, Stevenson, Stevenson, Sudarsky, Swain, Swift, Tinetti, Todorov, Todorov, Triaud, Vidal-Madjar, Vidal-Madjar, Wakeford, Wakeford, Waldmann, Wiedemann, Wiktorowicz, Wiktorowicz, Wilson, Wit, Wit, Wit, Wong, Wong, Wordsworth, Zellem, Zhao, Zhou   +169 more
core   +1 more source

Stability of Proton Superoxide and its Superionic Transition Under High Pressure

Advanced Science, Volume 12, Issue 9, March 6, 2025.
The study predicts the stable proton superoxide (HO2) under extreme conditions using Density Functional Theory (DFT)‐based crystal structure prediction. HO2 exhibits metallic behavior at high pressure, transitions to an insulator under reduced pressure, and becomes superionic with high electrical conductivity under elevated temperatures.
Zifan Wang, Wenge Yang, Duck Young Kim
wiley   +1 more source

MESSENGER Observations of a Possible Alfvén Wing at Mercury Driven by a Low Alfvénic Mach Number Interplanetary Coronal Mass Ejection

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Abstract We investigate Mercury's response to rare, low Alfvénic Mach number MA $\left({M}_{A}\right)$ solar wind conditions using observations from the Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) mission. This study provides compelling evidence of Mercury's altered magnetospheric state under these extreme conditions ...
Charles F. Bowers, Caitríona M. Jackman, Xianzhe Jia, James A. Slavin, Joachim Saur, Mika K. G. Holmberg, Ryan M. Dewey, Daniel Heyner, Filip Elekes, Lina Z. Hadid, Benoit Lavraud, Yang Wang, Hans L. F. Huybrighs, Matthew J. Rutala, Alexandra R. Fogg, Stephenie Brophy Lee, Daragh M. Hollman   +16 more
wiley   +1 more source

VISIBLE AND INFRARED TELESCOPES IN DETECTION OF EARTH-LIKE EXOPLANETS

Radio Physics and Radio Astronomy, 2016
Object and purpose: The study examines the balance of resolving and light-harvesting (penetrating) abilities of filled and sparse aperture telescopes in direct detection of terrestrial exoplanets.
A. D. Yegorov, V. A. Yegorov, S. A. Yegorov, L. I. Yelenskaya, I. Ye. Sinel’nikov   +4 more
doaj   +1 more source

Exoplanet Atmosphere Measurements from Transmission Spectroscopy and other Planet-Star Combined Light Observations [PDF]

, 2017
It is possible to learn a great deal about exoplanet atmospheres even when we cannot spatially resolve the planets from their host stars. In this chapter, we overview the basic techniques used to characterize transiting exoplanets - transmission spectroscopy, emission and reflection spectroscopy, and full-orbit phase curve observations.
arxiv   +1 more source

Exoplanets: Possible Biosignatures

, 2017
The ancestor philosophers' dream of thousands of new worlds is finally realised: about 3500 extrasolar planets have been discovered in the neighborhood of our Sun. Most of them are very different from those we used to know in our Solar System.
Claudi, R.
core   +1 more source