Results 71 to 80 of about 6,459 (144)

The Effects of Kinematic Magnetohydrodynamics on the Atmospheric Circulation of Eccentric Hot Jupiters

The Astrophysical Journal
Hot Jupiters are typically considered to be tidally locked due to their short orbital periods. The extreme irradiation can result in atmospheric species becoming thermally ionized on the dayside, which then interact with the planet’s magnetic field by ...
Hayley Beltz, Willow Houck, L. C. Mayorga, Thaddeus D. Komacek, Joseph R. Livesey, Juliette Becker   +5 more
doaj   +1 more source

From Tape Reels to Global Access: A History and Future Vision of NASA's Scientific Data Management

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract Since its creation in the late 1950s, NASA has collected space science data and information that span astrophysics, Earth science, planetary science, heliophysics, and biological and physical sciences. While these data were critical to NASA's objective of expanding human knowledge of space, the early days of scientific data and information ...
Kaylin Bugbee, Rahul Ramachandran
wiley   +1 more source

A Large and Variable Leading Tail of Helium in a Hot Saturn Undergoing Runaway Inflation

The Astronomical Journal
Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across the mass–radius–insolation distribution.
Michael Gully-Santiago, Caroline V. Morley, Jessica Luna, Morgan MacLeod, Antonija Oklopčić, Aishwarya Ganesh, Quang H. Tran, Zhoujian Zhang, Brendan P. Bowler, William D. Cochran, Daniel M. Krolikowski, Suvrath Mahadevan, Joe P. Ninan, Guđmundur Stefánsson, Andrew Vanderburg, Joseph A. Zalesky, Gregory R. Zeimann   +16 more
doaj   +1 more source

Multiple Patchy Cloud Layers in the Planetary-mass Object SIMP 0136+0933

The Astrophysical Journal
Multiwavelength photometry of brown dwarfs and planetary-mass objects provides insight into their atmospheres and cloud layers. We present near-simultaneous J - and K _s -band multiwavelength observations of the highly variable T2.5 planetary-mass object,
Allison M. McCarthy, Philip S. Muirhead, Patrick Tamburo, Johanna M. Vos, Caroline V. Morley, Jacqueline Faherty, Daniella C. Bardalez Gagliuffi, Eric Agol, Christopher Theissen   +8 more
doaj   +1 more source

The JWST Weather Report from the Isolated Exoplanet Analog SIMP 0136+0933: Pressure-dependent Variability Driven by Multiple Mechanisms

The Astrophysical Journal Letters
Isolated planetary-mass objects share their mass range with planets but do not orbit a star. They lack the necessary mass to support fusion in their cores and thermally radiate their heat from formation as they cool, primarily at infrared wavelengths ...
Allison M. McCarthy, Johanna M. Vos, Philip S. Muirhead, Beth A. Biller, Caroline V. Morley, Jacqueline Faherty, Ben Burningham, Emily Calamari, Nicolas B. Cowan, Kelle L. Cruz, Eileen Gonzales, Mary Anne Limbach, Pengyu Liu, Evert Nasedkin, Genaro Suárez, Xianyu Tan, Cian O’Toole, Channon Visscher, Niall Whiteford, Yifan Zhou   +19 more
doaj   +1 more source

A Search for Temporal Atmospheric Variability of Kepler Hot Jupiters

The Astronomical Journal
We perform a systematic search for atmospheric variability in short-period gas-giant planets (hot Jupiters) observed by the Kepler mission, by looking for temporal variability of their secondary eclipse depths.
Canis Li, Avi Shporer
doaj   +1 more source

Effects of Transient Stellar Emissions on Planetary Climates of Tidally Locked Exo-Earths

The Astronomical Journal
Space weather events in exoplanetary environments sourced from transient host star emissions, including stellar flares, coronal mass ejections, and stellar proton events, can substantially influence a planet's habitability and atmospheric evolution ...
Howard Chen, Paolo De Luca, Assaf Hochman, Thaddeus D. Komacek   +3 more
doaj   +1 more source

Mapping Atmospheric Features of the Planetary-mass Brown Dwarf SIMP 0136 with JWST NIRISS

The Astrophysical Journal
In this paper, we analyze James Webb Space Telescope Near-Infrared Imager and Slitless Spectrograph time-series spectroscopy data to characterize the atmosphere of the planetary-mass brown dwarf SIMP J01365662+093347. Principal component analysis reveals
Roman Akhmetshyn, Étienne Artigau, Nicolas B. Cowan, Michael K. Plummer, Fei Wang, Ben Burningham, Björn Benneke, René Doyon, Ray Jayawardhana, David Lafrenière, Stanimir A. Metchev, Jason F. Rowe   +11 more
doaj   +1 more source

Is the Atmosphere of the Ultra-hot Jupiter WASP-121 b Variable?

The Astrophysical Journal Supplement Series
We present a comprehensive analysis of the Hubble Space Telescope observations of the atmosphere of WASP-121 b, an ultra-hot Jupiter. After reducing the transit, eclipse, and phase-curve observations with a uniform methodology and addressing the biases ...
Q. Changeat, J. W. Skinner, J. Y-K. Cho, J. Nättilä, I. P. Waldmann, A. F. Al-Refaie, A. Dyrek, B. Edwards, T. Mikal-Evans, M. Joshua, G. Morello, N. Skaf, A. Tsiaras, O. Venot, K. H. Yip   +14 more
doaj   +1 more source

World-leading science with SPIRou - the nIR spectropolarimeter / high-precision velocimeter for CFHT

, 2013
SPIRou is a near-infrared (nIR) spectropolarimeter / velocimeter proposed as a new-generation instrument for CFHT. SPIRou aims in particular at becoming world-leader on two forefront science topics, (i) the quest for habitable Earth-like planets around ...
Alencar, S. H. P., Artigau, E., Boisse, I., Bonfils, X., Bouchy, F., Bouvier, J., Brun, A. S., Castilho, B. V., Delfosse, X., Donati, J. -F., Doyon, R., Figueira, P., Hennebelle, P., Hébrard, G., Kouach, D., Martioli, E., Morin, J., Moutou, C., Nascimento, J. -D. do, Pepe, F., Santos, N. C., Team, the SPIRou Science, Udry, S., Wang, S. Y., Widemann, T.   +24 more
core   +1 more source