Results 61 to 70 of about 21,297 (217)

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

Exoplanet Catalogues

, 2018
One of the most exciting developments in the field of exoplanets has been the progression from 'stamp-collecting' to demography, from discovery to characterisation, from exoplanets to comparative exoplanetology. There is an exhilaration when a prediction
A Wolszczan, BT Montet, CJ Burke, Eunkyu Han, J Eastman, J. Schneider, Jason F. Rowe, Jeffrey L. Coughlin, John Southworth, John Southworth, John Southworth, JT Wright, M Mayor, PW Sullivan, RL Akeson, RP Butler, SR Kane, Stanislav Poddaný, Susan E. Thompson, T Mazeh, WJ Borucki   +20 more
core   +1 more source

The Impact of the Sulfur Allotropes and Sulfur Hydrides on the Venus Cloud Chemistry

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Venus is home to vivid sulfur chemistry, with SO2 ${\text{SO}}_{2}$ as the major sulfur gas species and a global cloud layer between 47 and 70 km composed of H2SO4 ${\mathrm{H}}_{2}{\text{SO}}_{4}$ and H2 ${\mathrm{H}}_{2}$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to reproduce the three orders
Maxence Lefèvre, Franck Lefèvre, Anni Määttänen, Robert Skog, Benjamin Frandsen, Aurélien Stolzenbach, Ashwin Braude   +6 more
wiley   +1 more source

Detecting Exoplanet Transits with the Next Generation of X-Ray Telescopes

The Astronomical Journal
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high-energy irradiation on the upper atmospheres of planets.
Raven Cilley, George W. King, Lía Corrales   +2 more
doaj   +1 more source

HATS-8b: A Low-Density Transiting Super-Neptune [PDF]

, 2015
HATS-8b is a low density transiting super-Neptune discovered as part of the HATSouth project. The planet orbits its solar-like G dwarf host (V=14.03 $\pm$ 0.10 and T$_{eff}$ =5679 $\pm$ 50 K) with a period of 3.5839 d.
Bakos, G. Á., Bayliss, D., Bhatti, W., Brahm, R., Buchhave, L. A., Ciceri, S., Csubry, Z., de Val-Borro, M., Espinoza, N., Fulton, B. J., Hartman, J. D., Henning, T., Howard, A. W., Isaacson, H., Jordán, A., Lázár, J., Mancini, L., Marcy, G. W., Noyes, R. W., Papp, I., Penev, K., Rabus, M., Schmidt, B., Suc, V., Sári, P., Zhou, G.   +25 more
core   +2 more sources

Impacts of Carbon Dioxide Deposition on Martian Near‐Surface Wave Activity

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract A prominent feature of Mars' winter atmosphere is near‐surface baroclinic wave activity. These waves exert strong control on dust storm variability and contribute to transport of heat, momentum, and dust. Using a suite of Mars general circulation model simulations, we investigate an underexplored connection between near‐surface wave activity ...
Hung Kwan Fok, Anthony Toigo, Darryn Waugh   +2 more
wiley   +1 more source

Exoplanet orbital eccentricity: Multiplicity relation and the Solar System [PDF]

Proceedings of the National Academy of Sciences, 2014
Significance The Solar System planets have near-circular orbits (i.e., unusually low eccentricity) compared with the known population of exoplanets, planets that orbit stars other than the Sun. This fact has been widely interpreted to indicate that the Solar System is an atypical member of the overall population of planetary systems.
Limbach, Mary Anne, Turner, Edwin L.
openaire   +3 more sources

The Prevalence of Resonance Among Young, Close-in Planets

The Astronomical Journal
Multiple planets undergoing disk migration may be captured into a chain of mean-motion resonances with the innermost planet parked near the disk’s inner edge.
Fei Dai, Max Goldberg, Konstantin Batygin, Jennifer van Saders, Eugene Chiang, Nick Choksi, Rixin Li, Erik A. Petigura, Gregory J. Gilbert, Sarah C. Millholland, Yuan-Zhe Dai, Luke Bouma, Lauren M. Weiss, Joshua N. Winn   +13 more
doaj   +1 more source

Spectroscopic Follow-up of Gaia Exoplanet Candidates: Impostor Binary Stars Invade the Gaia DR3 Astrometric Exoplanet Candidates

The Astronomical Journal, 2023
In this paper, we report on the follow-up of six potential exoplanets detected with Gaia astrometry and provide an overview of what is currently known about the nature of the entire Gaia astrometric exoplanet candidate sample, 72 systems in total.
Marcus L. Marcussen, Simon H. Albrecht
doaj   +1 more source

Gliese 581g as a scaled-up version of Earth: atmospheric circulation simulations

, 2011
We use three-dimensional simulations to study the atmospheric circulation on the first Earth-sized exoplanet discovered in the habitable zone of an M star.
Anderson, Charbonneau, Cho, Cho, Cooper, Cooper, Cowan, Dvorak, Edwards, Edwards, Fraser, Gold, Gordon, Held, Heng, Joshi, Joshi, Kevin Heng, Kraucunas, Lammer, Mayor, Menou, Merlis, Mitchell, Peixóto, Pierrehumbert, Roeckner, Saravanan, Scalo, Selsis, Shapiro, Shell, Showman, Showman, Smagorinsky, Smagorinsky, Snellen, Stauffer, Stephenson, Steven S. Vogt, Suarez, Tarter, Thrastarson, Vallis, Vogt, Washington, Watkins, Wordsworth, Wordsworth   +48 more
core   +1 more source