Results 71 to 80 of about 1,077 (191)
Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.Abstract We present a new and transformative composition for Venus' cloud aerosols using previously uncharacterized data acquired by the Pioneer Venus Large Probe, which descended through Venus' atmosphere in 1978. This aerosol composition was extracted by re‐analyzing data acquired by the Large Probe Neutral Mass Spectrometer (LNMS) and re‐evaluating ...
R. Mogul +3 more
wiley +1 more source
Surprise Nondetection of Upsilon Andromedae b with MIRC-X and MYSTIC at the CHARA Array
The Astronomical JournalGround-based long baseline interferometry is a powerful tool for characterizing exoplanets that are too close to their host star to be imaged with single-dish telescopes. The CHARA Array can resolve companions down to 0.5 mas, allowing us in principle to
Tyler Gardner +13 more
doaj +1 more source
Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths
The Astrophysical JournalStudies 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 +1 more
doaj +1 more source
Minimizing Star-spot Contamination of Exoplanet Transit Spectroscopy Using Alternate Normalization
The Astronomical JournalRecently, 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 +3 more
doaj +1 more source
Identifying Exoplanet Candidates Using WaveCeptionNet
The Astronomical JournalIn this study, we propose a wavelet-transform-based light curve representation method and a CNN model based on Inception-v3 for fast classification of light curves, enabling the quick discovery of potentially interesting targets from massive data ...
Huiping Liao +4 more
doaj +1 more source
The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge
The Astronomical JournalThe “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 +13 more
doaj +1 more source
ExoMiner++: Enhanced Transit Classification and a New Vetting Catalog for 2-minute TESS Data
The Astronomical JournalWe 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 +26 more
doaj +1 more source
The Astrophysical JournalInhomogeneous 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 +7 more
doaj +1 more source
The Astronomical JournalSub-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 +5 more
doaj +1 more source
Helium in the Extended Atmosphere of the Warm Superpuff TOI-1420b
The Astronomical JournalSuperpuffs are planets with exceptionally low densities ( ρ ≲ 0.1 g cm ^−3 ) and core masses ( M _c ≲ 5 M _⊕ ). Many lower-mass ( M _p ≲ 10 M _⊕ ) superpuffs are expected to be unstable to catastrophic mass loss via photoevaporation and/or boil-off ...
Shreyas Vissapragada +13 more
doaj +1 more source