Results 71 to 80 of about 2,143 (179)

An Empirical Predictive Model for Atmospheric H Lyman‐α Emission Brightness at Mars

Earth and Space Science, Volume 11, Issue 6, June 2024.
Abstract Characterizing the abundance of atmospheric hydrogen (H) at Mars is critical for determining the current and, subsequently, the primordial water content on the planet. At present, the atmospheric abundance of Martian H is not directly measured but is simulated using proprietary models that are constrained with observations of H Lyman‐α ...
Majd Mayyasi, Adil Mayyasi
wiley   +1 more source

SOPHIE velocimetry of Kepler transit candidates III. KOI-423b: an 18 Mjup transiting companion around an F7IV star

, 2011
We report the strategy and results of our radial velocity follow-up campaign with the SOPHIE spectrograph (1.93-m OHP) of four transiting planetary candidates discovered by the Kepler space mission. We discuss the selection of the candidates KOI-428, KOI-
A. Eggenberger, A. S. Bonomo, A. Santerne, Anderson, Baraffe, Baranne, Batalha, Beatty, Boisse, Borucki, Borucki, Bouchy, Bouchy, Bouchy, Bouchy, Bruntt, Bruntt, Burrows, C. Gry, C. Moutou, Cardelli, Casagrande, D. Ehrenreich, Deleuil, Ehrenreich, F. Bouchy, G. Hébrard, Galland, Giménez, Guillot, Guillot, Guillot, Haas, Havel, Irwin, Jenkins, Johns-Krull, Johnson, Kipping, Koch, M. Deleuil, M. Havel, Nordstrom, Pepe, Pont, Pont, Pont, R. F. Díaz, S. Udry, Sahlmann, Santerne, Scargle, Sing, Straizys, T. Guillot, Torres, Udry, van Kerkwijk, Wright   +58 more
core   +1 more source

A Verification Suite of Test Cases for the Barotropic Solver of Ocean Models

Journal of Advances in Modeling Earth Systems, Volume 16, Issue 4, April 2024.
Abstract The development of any atmosphere or ocean model warrants a suite of test cases (TCs) to verify its spatial and temporal discretizations, order of accuracy, stability, reproducibility, portability, scalability, etc. In this paper, we present a suite of shallow water TCs designed to verify the barotropic solver of atmosphere and ocean models ...
Siddhartha Bishnu, Mark R. Petersen, Bryan Quaife, Joseph Schoonover   +3 more
wiley   +1 more source

Tidal Effects on the Habitability of Exoplanets: The Case of GJ 581 d

, 2010
Tides may be crucial to the habitability of exoplanets. If such planets form around low-mass stars, then those in the circumstellar habitable zone will be close enough to their host stars to experience strong tidal forces.
Barnes, Rory, Greenberg, Richard, Heller, René, Jackson, Brian, Raymond, Sean N.   +4 more
core   +1 more source

Formation of Super-Earths

, 2018
Super-Earths are the most abundant planets known to date and are characterized by having sizes between that of Earth and Neptune, typical orbital periods of less than 100 days and gaseous envelopes that are often massive enough to significantly ...
Andre Izidoro, Angie Wolfgang, Benjamin J. Fulton, Brad M. S. Hansen, Chris W. Ormel, Chris W. Ormel, D Powell, Daniel C. Fabrycky, Eric D. Lopez, Eric D. Lopez, Eric D. Lopez, France Allard, François Fressin, Gennaro D'Angelo, Geoffrey W. Marcy, H Rein, HE Schlichting, Howard Chen, James E. Owen, Jeffrey Fung, JH Steffen, Katherine M. Deck, L Tu, Leslie A. Rogers, LM Weiss, M. Ikoma, Niraj K. Inamdar, Niraj K. Inamdar, Owen R. Lehmer, Peter Goldreich, R Boekel van, Rebekah I. Dawson, RR Rafikov, S Seager, Sheng Jin, Sivan Ginzburg, Sivan Ginzburg, SN Raymond, Y Wu, Yuval Greenzweig   +39 more
core   +1 more source

Exomoon Phase Curves: Toroidal Exosphere Simulations of Exo‐Ios Orbiting 8 Exoplanets in Alkali Spectroscopy

Journal of Geophysical Research: Planets, Volume 129, Issue 3, March 2024.
Abstract Toroidal atmospheres and exospheres characterized at exoplanets may be fueled by volcanically active exomoons, often referred to as exo‐Ios. We study the neutral outgassing and volatile evolution of a close‐orbiting, evaporating satellite at eight candidate exoplanet‐exomoon systems WASP‐49,‐96,‐69,‐17 b, XO‐2N b, HAT‐P‐1 b, HD‐189733 b, and ...
M. Meyer zu Westram, A. V. Oza, A. Galli
wiley   +1 more source

A Short History of (Orbital) Decay: Roman’s Prospects for Detecting Dying Planets

The Astronomical Journal
The Roman Space Telescope Galactic Bulge Time Domain Survey (GBTDS) is expected to detect ∼10 ^5 transiting planets. Many of these planets will have short orbital periods and are thus susceptible to tidal decay.
Kylee Carden, B. Scott Gaudi, Robert F. Wilson   +2 more
doaj   +1 more source

Tidal Constraints on Planetary Habitability

, 2009
We review how tides may impact the habitability of terrestrial-like planets. If such planets form around low-mass stars, then planets in the circumstellar habitable zone will be close enough to their host stars to experience strong tidal forces.
Barnes, Rory, Greenberg, Richard, Heller, Rene, Jackson, Brian, Raymond, Sean N.   +4 more
core   +1 more source

Long‐Term Variability of Mean Winds and Planetary‐Scale Waves Around Venusian Cloud Top Observed With Akatsuki/UVI

Journal of Geophysical Research: Planets, Volume 129, Issue 3, March 2024.
Abstract Since December 2015, Ultraviolet Imager (UVI) onboard Akatsuki has been observing Venus clouds at the wavelengths of 283 and 365 nm. Horizontal winds near the cloud top derived from the UVI images over ∼7 earth years are analyzed to elucidate spatial and temporal variability of the superrotation and planetary‐scale waves.
Takeshi Horinouchi, Toru Kouyama, Masataka Imai, Shin‐ya Murakami, Yeon Joo Lee, Atsushi Yamazaki, Manabu Yamada, Shigeto Watanabe, Takeshi Imamura, Javier Peralta, Takehiko Satoh   +10 more
wiley   +1 more source

Numerical Nonadiabatic Tidal Calculations with GYRE-tides: The WASP-12 Test Case

The Astrophysical Journal Letters
We revisit the tidal evolution of the WASP-12 system using direct numerical calculations with the GYRE-tides code. WASP-12b is a hot Jupiter on a 1.1 day orbit around a slightly evolved F-type star. Its observed orbital decay rate, $| {\dot{P}}_{{\rm{orb}
Meng Sun, R. H. D. Townsend, Hongbo Xia, Jifeng Liu   +3 more
doaj   +1 more source