Results 41 to 50 of about 213 (136)

JWST Measurements of 13C, 18O, and 17O in the Atmosphere of Super-Jupiter VHS 1256 b

The Astrophysical Journal Letters, 2023
Isotope ratios have recently been measured in the atmospheres of directly imaged and transiting exoplanets from ground-based observations. The arrival of JWST allows us to characterize exoplanetary atmospheres in further detail and opens up wavelengths ...
Siddharth Gandhi, Sam de Regt, Ignas Snellen, Yapeng Zhang, Benson Rugers, Niels van Leur, Quincy Bosschaart   +6 more
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Searching for GEMS: The Occurrence of Giant Planets Orbiting M Dwarfs within 100 pc

The Astronomical Journal
We present results from a systematic search for transiting short-period giant exoplanets around M dwarf stars (GEMS; P  
Rowen I. Glusman, Caleb I. Cañas, Shubham Kanodia, Te Han, Rachel B. Fernandes, Guđmundur Stefánsson, Eric B. Ford, Marissa Maney, Andrew Monson, Andrew Hotnisky, Suvrath Mahadevan, Michael Rodruck, Kristo Ment, Andrew McWilliam, William D. Cochran, Knicole D. Colón, Mark R. Giovinazzi, Jaime A. Alvarado-Montes, Chad F. Bender, Cullen H. Blake, Alexandra Boone, Scott A. Diddams, Arvind F. Gupta, Samuel Halverson, Daniel Krolikowski, Andrea S.J. Lin, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Ryan Terrien, Johanna Teske, Jason T. Wright   +32 more
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The Case for a New Frontiers–Class Uranus Orbiter: System Science at an Underexplored and Unique World with a Mid-scale Mission

The Planetary Science Journal, 2022
Current knowledge of the Uranian system is limited to observations from the flyby of Voyager 2 and limited remote observations. However, Uranus remains a highly compelling scientific target due to the unique properties of many aspects of the planet ...
Ian J. Cohen, Chloe Beddingfield, Robert Chancia, Gina DiBraccio, Matthew Hedman, Shannon MacKenzie, Barry Mauk, Kunio M. Sayanagi, Krista M. Soderlund, Elizabeth Turtle, Caitlin Ahrens, Christopher S. Arridge, Shawn M. Brooks, Emma Bunce, Sebastien Charnoz, Athena Coustenis, Robert A. Dillman, Soumyo Dutta, Leigh N. Fletcher, Rebecca Harbison, Ravit Helled, Richard Holme, Lauren Jozwiak, Yasumasa Kasaba, Peter Kollmann, Statia Luszcz-Cook, Kathleen Mandt, Olivier Mousis, Alessandro Mura, Go Murakami, Marzia Parisi, Abigail Rymer, Sabine Stanley, Katrin Stephan, Ronald J. Vervack, Jr., Michael H. Wong, Peter Wurz   +36 more
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Discovery and Dynamics of the Nontransiting Planet Kepler-139f

The Astrophysical Journal Letters
Among the ways that an outer giant planet can alter the architecture of an inner planetary system is by tilting the orbits of the inner planets and reducing their mutual transit probabilities.
Caleb Lammers, Joshua N. Winn
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Ultracool Dwarfs Observed with the Spitzer Infrared Spectrograph: Equatorial Latitudes in L Dwarf Atmospheres Are Cloudier

The Astrophysical Journal Letters, 2023
We report direct observational evidence for a latitudinal dependence of dust cloud opacity in ultracool dwarfs, indicating that equatorial latitudes are cloudier than polar latitudes.
Genaro Suárez, Johanna M. Vos, Stanimir Metchev, Jacqueline K. Faherty, Kelle Cruz   +4 more
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Free-floating Planets, Survivor Planets, Captured Planets, and Binary Planets from Stellar Flybys

The Astrophysical Journal
In star clusters, close stellar encounters can strongly impact the architecture of a planetary system or even destroy it. We present a systematic study of the effects of stellar flybys on two-planet systems.
Fangyuan Yu, Dong Lai
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Tidal Dissipation in Stably Stratified and Semiconvective Regions of Rotating Giant Planets: Incorporating Coriolis Forces

The Astrophysical Journal, 2023
We study how stably stratified or semiconvective layers alter tidal dissipation rates associated with the generation of inertial, gravito-inertial, interfacial, and surface gravity waves in rotating giant planets.
Christina M. Pontin, Adrian J. Barker, Rainer Hollerbach   +2 more
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Revising the Giant Planet Mass–Metallicity Relation: Deciphering the Formation Sequence of Giant Planets

The Astrophysical Journal
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles.
Yayaati Chachan, Jonathan J. Fortney, Kazumasa Ohno, Daniel Thorngren, Ruth Murray-Clay   +4 more
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Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534 b

The Astrophysical Journal Letters
We report the detection of thermal emission from and confirm the planetary nature of WD 1856+534 b, the first transiting planet known to orbit a white dwarf (WD) star.
Mary Anne Limbach, Andrew Vanderburg, Ryan J. MacDonald, Kevin B. Stevenson, Sydney Jenkins, Simon Blouin, Emily Rauscher, Rachel Bowens-Rubin, Elena Gallo, James Mang, Caroline V. Morley, David K. Sing, Christopher O’Connor, Alexander Venner, Siyi Xu   +14 more
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Searching for Planets Orbiting Vega with the James Webb Space Telescope

The Astronomical Journal
The most prominent of the IRAS debris disk systems, α Lyrae (Vega), at a distance of 7.7 pc, has been observed by both the NIRCam and MIRI instruments on the James Webb Space Telescope.
Charles Beichman, Geoffrey Bryden, Jorge Llop-Sayson, Marie Ygouf, Alexandra Greenbaum, Jarron Leisenring, Andras Gaspar, John Krist, George Rieke, Schuyler Wolff, Kate Su, Klaus Hodapp, Michael Meyer, Doug Kelly, Martha Boyer, Doug Johnstone, Scott Horner, Marcia Rieke   +17 more
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