Results 61 to 70 of about 1,944 (221)

Oxidation of the Interiors of Carbide Exoplanets

The Planetary Science Journal, 2020
Astrophysical measurements have shown that some stars have sufficiently high carbon-to-oxygen ratios such that the planets they host would be mainly composed of carbides instead of silicates.
H. W. Horn, E. Garhart, K. Leinenweber, V. Prakapenka, E. Greenberg, S.-H. Shim   +5 more
doaj   +1 more source

Ohmic Dissipation During the Formation of Super-Earth

The Astrophysical Journal, 2023
The super-Earth population, as one of the representatives of exoplanets, plays an important role in constraining the planet formation theories. According to the prediction from core-accretion models, super-Earths should be rare because their masses are ...
Shi Jia, Wei, Zhong, Cong Yu
doaj   +1 more source

Out There No One Has a Right to Die

Bioethics, Volume 40, Issue 6, Page 565-572, July 2026.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Mercury's Eccentric Orbit as a Driver of Significant “Seasonal” Change in Upstream Solar Wind Forcing

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Mercury experiences the most intense and variable solar wind (SW) conditions in the solar system due to its close, eccentric orbit about the Sun. In addition to variation driven by coronal source and solar cycle, the SW arriving at Mercury varies periodically as the planet's heliocentric distance changes by over 50% per orbit.
Ryan M. Dewey, Caitriona Mary Jackman, Mathias Rojo, Lina Z. Hadid, Beatriz Sánchez‐Cano, Charles F. Bowers, Jim M. Raines, Susan T. Lepri, Stefano Livi, Jesse T. Coburn, Sae Aizawa, Yeimy J. Rivera, Weijie Sun, Jiutong Zhao, James A. Slavin, Daniel Heyner, Daragh M. Hollman, Alexander D. Shane   +17 more
wiley   +1 more source

TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite [PDF]

, 2020
We present the discovery of two new 10 day period giant planets from the Transiting Exoplanet Survey Satellite mission, whose masses were precisely determined using a wide diversity of ground-based facilities.
Winn, Joshua N., Kane, Stephen R., Suc, Vincent, Tinney, Chris G., Zhang, Hui, Guerrero, Natalia M., Latham, David W., Mann. Andrew W., Charbonneau, David, Wittenmyer, Robert A., Vezie, Michael, Plavchan, Peter, Wang, Songhu, Brown, Timothy M., Huang, Chelsea X., Irwin, Jonathan, Vanzi, Leonardo, Yahalomi, Daniel A., Seager, Sara, Sarkis, Paula, Ziegler, Carl, Schlecker, Martin, Rabus, Markus, Shiao, Bernie, Mengel, Matthew W., Henze, Christopher E., McCully, Curtis, Collins, Karen A., Bakos, Gáspár Á., Hobson, Melissa, Tan, Thiam-Guan, Ricker, George, Hogan, Aleisha, Addison, Brett C., Briceño, César, Trifonov, Trifon, Bryant, Edward M., Udry, Stephane, Bouchy, Francois, Bowler, Brendan P., Kielkopf, John, Siverd, Robert J., Vines, Jose I., Henning, Thomas, Mann, Andrew W., Zapata, Abner, Torres, Pascal, Jenkins, Jon M., Schlieder, Joshua E., Wright, Duncan J., Jordán, Andrés, Ségransan, Damien, Kossakowski, Diana, Mazeh, Tsevi, Lagos Rojas, Felipe Alejandro, Bhatti, Waqas, McCormac, James, Esquerdo, Gilbert A., Rojas, Felipe, Vuckovic, Maja, Bayliss, Daniel, Berlind, Perry, Shporer, Avi, Quinn, Samuel N., Shahaf, Sahar, Stassun, Keivan G., Bieryla, Allyson, Saesen, Sophie, Brahm, Rafael, Mireles, Ismael, Nielsen, Louise D., Davis, Allen B., Vanderspek, Roland, Espinoza, Néstor, Caldwell, Douglas A., Jones, Matías I., Fulton, Benjamin J., Rodriguez, Joseph E., Okumura, Jack, Horner, Jonathan   +79 more
core   +1 more source

THE IMPACT OF NON-UNIFORM THERMAL STRUCTURE ON THE INTERPRETATION OF EXOPLANET EMISSION SPECTRA [PDF]

The Astrophysical Journal, 2016
ABSTRACT The determination of atmospheric structure and molecular abundances of planetary atmospheres via spectroscopy involves direct comparisons between models and data. While varying in sophistication, most model spectra comparisons fundamentally assume one-dimensional (1D) model physics.
Y. Katherina Feng, Michael R. Line, Jonathan J. Fortney, Kevin B. Stevenson, Jacob Bean, Laura Kreidberg, Vivien Parmentier   +6 more
openaire   +4 more sources

Effects of Hot Oxygen Corona on Ion Escape From Venus‐Like Planets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Due to the lack of a significant planetary magnetic field, the upper atmospheres of Venus‐like planets interact directly with the stellar wind. Therefore, thermal atomic oxygen in the thermosphere and hot oxygen in the corona produced by non‐thermal processes in the upper atmosphere act as a source of ion pickup loss.
T. Nishioka, K. Seki, R. Sakata, N. Terada, S. Sakai, H. Shinagawa, A. Nakayama   +6 more
wiley   +1 more source

Spectroscopy of Exoplanet Atmospheres with the FINESSE Explorer [PDF]

, 2012
FINESSE (Fast INfrared Exoplanet Spectroscopic Survey Explorer) will provide uniquely detailed information on the growing number of newly discovered planets by characterizing their atmospheric composition and temperature structure.
Green, Robert O., Swain, Mark R., Deroo, Pieter   +2 more
core  

Most Super-Earths Have Less Than 3% Water

The Astrophysical Journal
Super-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, Caroline Dorn, Vivasvaan Aditya Raj, Hilke E. Schlichting, Edward D. Young   +4 more
doaj   +1 more source

Towards a Theory for the Atmospheres, Structure, and Evolution of Giant Exoplanets [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractIn this short review, I summarize some of the salient features of the emerging theory of exoplanets in general, and of giant exoplanets in particular. A focus is on the characterization of transiting planets at primary and secondary eclipse, but various other related topics are covered, if only briefly.
openaire   +1 more source