Results 51 to 60 of about 1,009 (181)

Comparing Geochemical and Geodynamical Models of Plume and Ridge Mantle Source Composition

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.
Abstract We use a multidisciplinary approach to investigate how the parameter space of mantle convection affects present‐day mantle composition. We compare 22 forward geodynamical mantle circulation model simulations against 24 variants of a geochemical inversion model of the global radiogenic isotope data set of mantle‐derived lavas.
Paul Béguelin, James Panton, Morten Andersen, Tim Elliott, Huw Davies, Joel Rodney, Abigail Plimmer   +6 more
wiley   +1 more source

The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge

The Astronomical Journal
The “Neptunian ridge” is a recently identified peak in the frequency of planets with sizes between that of Neptune and Saturn orbiting their host stars with periods between 3 and 6 days.
Samuel W. Yee, Patrick Tamburo, Gudmundur Stefánsson, Juliana García-Mejía, David Charbonneau, Khalid Barkaoui, Karen A. Collins, Richard P. Schwarz, Norio Narita, Akihiko Fukui, Andrew W. Howard, Howard Isaacson, Benjamin J. Fulton, Fei Dai   +13 more
doaj   +1 more source

ExoMiner++: Enhanced Transit Classification and a New Vetting Catalog for 2-minute TESS Data

The Astronomical Journal
We present ExoMiner++ , an enhanced deep learning model that builds on the success of ExoMiner to improve transit signal classification in 2-minute TESS data.
Hamed Valizadegan, Miguel J. S. Martinho, Jon M. Jenkins, Joseph D. Twicken, Douglas A. Caldwell, Patrick Maynard, Hongbo Wei, William Zhong, Charles Yates, Sam Donald, Karen A. Collins, David Latham, Khalid Barkaoui, Michael L. Calkins, Kylee Carden, Nikita Chazov, Gilbert A. Esquerdo, Tristan Guillot, Vadim Krushinsky, Grzegorz Nowak, Benjamin V. Rackham, Amaury Triaud, Richard P. Schwarz, Denise Stephens, Chris Stockdale, Cristilyn N. Watkins, Francis P. Wilkin   +26 more
doaj   +1 more source

Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths

The Astrophysical Journal
Studies from recent years have reached different conclusions regarding how frequently super-Earths are accompanied by long-period giant planets and vice versa. This relation has been predicted to be mass dependent by planet-formation models.
Etienne Lefèvre-Forján, Gijs D. Mulders   +1 more
doaj   +1 more source

Minimizing Star-spot Contamination of Exoplanet Transit Spectroscopy Using Alternate Normalization

The Astronomical Journal
Recently, M. H. Currie et al. (2023) simulated the detection of molecules in the atmospheres of temperate rocky exoplanets transiting nearby M-dwarf stars.
Drake Deming, Miles H. Currie, Victoria S. Meadows, Sarah Peacock   +3 more
doaj   +1 more source

A Direct Comparison between the Use of Double Gray and Multiwavelength Radiative Transfer in a General Circulation Model with and without Radiatively Active Clouds

The Astrophysical Journal
Inhomogeneous cloud formation and wavelength-dependent phenomena are expected to shape hot Jupiter atmospheres. We present a general circulation model with multiwavelength “picket fence” radiative transfer and radiatively active, temperature-dependent ...
Isaac Malsky, Emily Rauscher, Michael T. Roman, Elspeth K. H. Lee, Hayley Beltz, Arjun Savel, Eliza M.-R. Kempton, L. Cinque   +7 more
doaj   +1 more source

Evolution of novel activation functions in neural network training for astronomy data: habitability classification of exoplanets [PDF]

, 2020
Snehanshu Saha, Nithin Nagaraj, Archana Mathur, Rahul Yedida, H R Sneha   +4 more
openalex   +1 more source

Toward High-precision Mass Measurements of Two Sub-Neptunes in the K2-266 Planetary System Through Transit Timing

The Astronomical Journal
Sub-Neptunes have been found to be one of the most common types of exoplanets, yet their physical parameters and properties are poorly determined and in need of further investigation.
Ing-Guey Jiang, Li-Chin Yeh, Billy Edwards, Ming Yang, Keivan G. Stassun, Napaporn A-thano   +5 more
doaj   +1 more source

International Year of Astronomy Invited Review on Exoplanets [PDF]

, 2009
John Asher Johnson
openalex   +1 more source

New Astronomy Reviews special issue: History of Kepler’s major exoplanet “firsts” [PDF]

, 2018
Jack J. Lissauer, Joann Eisberg, Jack J. Lissauer, Joann Eisberg   +3 more
openalex   +1 more source