Results 81 to 90 of about 16,490 (246)
We present the JWST/NIRSpec G395H transmission spectrum of the young (10–30 Myr) transiting planet V1298 Tau b (9.85 ± 0.35 R _⊕ , T _eq = 670 K). Combined Hubble Space Telescope and JWST observations reveal a haze-free, H/He-dominated atmosphere with a
Saugata Barat+21 more
doaj +1 more source
Let’s Sweep: The Effect of Evolving J 2 on the Resonant Structure of a Three-planet System
Short and ultrashort period planets are peculiar types of exoplanets with periods as short as a few days or less. Although it is challenging to detect them, already several have been observed, with many additional candidates.
Thea H. Faridani+3 more
doaj +1 more source
Galactic chemical evolution of the solar neighbourhood, solar twins, and exoplanet indicators [PDF]
Charles R. Cowley, Kutluay Yüce
openalex +1 more source
Ion Escape From Degenerate Induced Magnetospheres: The Case of Mars
Abstract When the cone angle of the interplanetary magnetic field (IMF) becomes small, induced magnetospheres of unmagnetized planets degenerate. Using hybrid simulations, we study ionospheric ion escape in a 4° cone angle case and compare it with the nominal 55° cone angle (Parker spiral) case. The total escape rate is 1.7×1025 $1.7\times 1{0}^{25}$ s−
Qi Zhang+7 more
wiley +1 more source
Investigating the Origins of Hot Neptunes from Radial Velocity Data
Hot Neptunes are extrasolar planets that are similar in size to Neptune in our solar system but are much closer to their host stars, completing an orbit in 10 days or less. The origin of hot Neptunes is not fully understood.
Sophie Y. Zheng
doaj +1 more source
Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
We present a study of 33 {\it Kepler} planet-candidate host stars for which asteroseismic observations have sufficiently high signal-to-noise ratio to allow extraction of individual pulsation frequencies.
Aguirre, V. Silva+24 more
core +1 more source
Science of omics: a molecular space odyssey
Experimental Physiology, EarlyView.
Salomé Coppens+3 more
wiley +1 more source
Gaia Search for Stellar Companions of TESS Objects of Interest V
ABSTRACT In this paper, we present the latest results of our ongoing multiplicity survey of (Community) TESS Objects of Interest, using astrometry and photometry from the latest data release of the ESA Gaia mission to detect stellar companions of these stars and to characterize their properties.
Markus Mugrauer+3 more
wiley +1 more source
The Prevalence of Resonance Among Young, Close-in Planets
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+13 more
doaj +1 more source
Stellar magnetic activity – Star-Planet Interactions
Stellar magnetic activity is an important factor in the formation and evolution of exoplanets. Magnetic phenomena like stellar flares, coronal mass ejections, and high-energy emission affect the exoplanetary atmosphere and its mass loss over time.
Poppenhaeger, K.
doaj +1 more source