Results 51 to 60 of about 3,335,678 (179)

Glass rain : modelling the formation, dynamics and radiative-transport of cloud particles in hot Jupiter exoplanet atmospheres [PDF]

, 2017
The atmospheres of exoplanets are being characterised in increasing detail by observational facilities and will be examined with even greater clarity with upcoming space based missions such as the James Webb Space Telescope (JWST) and the Wide Field ...
Lee, Graham Kim Huat
core   +1 more source

Formation of Ultra-short-period Planets in Hot Jupiter Systems: Application to WASP-47

The Astrophysical Journal Letters
The WASP-47 system is notable as the first known system hosting both inner and outer low-mass planetary companions around a hot Jupiter, with an ultra-short-period (USP) planet as the innermost planetary companion.
Su Wang, Mengrui Pan, Yao Dong, Gang Zhao, Jianghui Ji   +4 more
doaj   +1 more source

A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley   +1 more source

The HD 191939 Exoplanet System is Well Aligned and Flat

The Astronomical Journal
We report the sky-projected spin–orbit angle λ for HD 191939 b, the innermost planet in a six-planet system, using Keck/KPF to detect the Rossiter–McLaughlin (RM) effect.
Jack Lubin, Erik A. Petigura, Judah Van Zandt, Corey Beard, Fei Dai, Samuel Halverson, Rae Holcomb, Andrew W. Howard, Howard Isaacson, Jacob Luhn, Paul Robertson, Ryan A. Rubenzahl, Guđmundur Stefánsson, Joshua N. Winn, Max Brodheim, William Deich, Grant M. Hill, Steven R. Gibson, Bradford Holden, Aaron Householder, Russ R. Laher, Kyle Lanclos, Joel Payne, Arpita Roy, Roger Smith, Abby P. Shaum, Christian Schwab, Josh Walawender   +27 more
doaj   +1 more source

Statistical Scale Analyses of a Diurnal Periodicity in Auroral Kilometric Radiation, Observed by Wind/WAVES

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Earth's strongest natural radio emission is Auroral Kilometric Radiation (AKR), which is correlated with auroral intensity, and is a barometer for space weather. AKR is generated by the electron cyclotron maser instability, with sources on auroral field lines. Previous work on AKR and radio emissions from other planets (or stars) points to
Alexandra Ruth Fogg, S. Wu, C. M. Jackman, S. J. Walker, M. J. Rutala, C. K. Louis, S. M. Ivanov, L. Lamy, J. E. Waters, D. K. Whiter   +9 more
wiley   +1 more source

Resonant Super-Earths Dancing with EKL Oscillations: Transit Timing Variation Phase Excitation and Resonance Disruption by EKL Interactions between a Cold Jupiter and Stellar Companion

The Astronomical Journal
Near-resonant Kepler planets are dynamically hot, as evidenced by nonzero transit timing variation (TTV) phases, indicating that free eccentricities are not damped. Recent observations suggest that circulating near-resonant planets tend to be dynamically
Pin-Gao Gu, Gongjie Li
doaj   +1 more source

Classification of Trajectories in a Two-planet Exosystem Using the Generalized Three-body Problem

The Astrophysical Journal, 2023
We deploy the theory of the generalized three-body problem to describe an exosystem composed of a host star, a transiting Jupiter-sized exoplanet, and an Earth-sized exoplanet.
Eman M. Moneer, Fredy L. Dubeibe, Yazan M. Allawi, Meznah M. Alanazi, Tobias C. Hinse, Euaggelos E. Zotos   +5 more
doaj   +1 more source

Inferring Io's Internal Properties by Combining Gravity Measurements and Volcanic Activity

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract With its extreme geological activity, Io represents an archetype for tidally heated exoplanets/moons and provides insight into early stages of terrestrial planet evolution. Decades of ground‐based observations and multiple space missions have refined our understanding of Io, yet it remains debated where inside Io the tidal heating takes place.
A. Veenstra, M. Rovira‐Navarro, W. van der Wal   +2 more
wiley   +1 more source

Direct Evidence of Photochemistry in an Exoplanet Atmosphere

, 2022
Photochemistry is a fundamental process of planetary atmospheres that is integral to habitability, atmospheric composition and stability, and aerosol formation. However, no unambiguous photochemical products have been detected in exoplanet atmospheres to
Aggarwal, Keshav, Cubillos, Patricio E., Line, Michael, Bean, Jacob L., Visscher, Channon, Alderson, Lili, Redfield, Seth, Gao, Peter, Baeyens, Robin, Crouzet, Nicolas, Behr, Patrick, Crossfield, Ian J. M., Schlawin, Everett, Lothringer, Joshua D., Grant, David, Fortney, Jonathan J., Hu, Renyu, Lopez-Morales, Mercedes, Yang, Jeehyun, France, Kevin, Daylan, Tansu, Bierson, Carver J., Wakeford, Hannah R, Tsai, Shang-Min, Powell, Diana, Carter, Aarynn L., Carone, Ludmila, Molaverdikhani, Karan, Yurchenko, Sergei N., Youngblood, Allison, Venot, Olivia, Kreidberg, Laura, Kirk, James, Brady, Ryan P., Moran, Sarah E., Berta-Thompson, Zachory K., Henning, Thomas, Taylor, Jake, Louca, Amy, Lendl, Monika, Decin, Leen, Moses, Julianne, Rustamkulov, Zafar, Wallack, Nicole L., Désert, Jean-Michel, Goyal, Jayesh M, Blecic, Jasmina, Mansfield, Megan, Miguel, Yamila, Welbanks, Luis, Batalha, Natalie M., Inglis, Julie, Mikal-Evans, Thomas, Wheatley, Peter J., Mukherjee, Sagnick, Batalha, Natasha E., Heng, Kevin, Leconte, Jérémy, Ohno, Kazumasa, Tremblin, Pascal, Rackham, Benjamin V., Krick, Jessica, Ahrer, Eva-Maria, Parmentier, Vivien, Jordan, Sean, Shorttle, Oliver, Barat, Saugata, Gibson, Neale P., Lee, Elspeth, Zhang, Xi, Harrington, Joseph, Mayne, N. J., Nasedkin, Evert, Alam, Munazza K., Palle, Enric, Borro, Miguel de Val, Casewell, S. L., Sing, David K., Stevenson, Kevin B., Feinstein, Adina D., Hébrard, Eric, Benneke, Björn, Kempton, Eliza M. -R., Lagage, Pierre-Olivier, Chubb, Katy L.   +84 more
core   +1 more source

Statistical Distribution Function of Orbital Spacings in Planetary Systems

The Astronomical Journal
The minimum orbital separation of planets in long-stable planetary systems is often modeled as a step function, parameterized with a single value ${{\rm{\Delta }}}_{\min }$ (measured in mutual Hill radius of the two neighboring planets).
Jeremy Dietrich, Renu Malhotra, Dániel Apai   +2 more
doaj   +1 more source