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We report on high-resolution and spatially-resolved spectra of Io in the 4.0 {\mu}m region, recorded with the VLT/CRIRES instrument in 2008 and 2010, which provide the first detection of the {\nu}1 + {\nu}3 band of SO2 in Io's atmosphere.…

地球与行星天体物理 · 物理学 2015-06-23 E. Lellouch , M. Ali-Dib , K. -L. Jessup , A. Smette , H. -U. Käufl , F. Marchis

The New Horizons flyby of Pluto confirmed the existence of hazes in its atmosphere. Observations of a large high- to low- phase brightness ratio, combined with the blue color of the haze, suggest that the haze particles are fractal…

CONTEXT: Thermal emission from extrasolar planets makes it possible to study important physical processes in their atmospheres and derive more precise orbital elements. AIMS: By using new near infrared and optical data, we examine how these…

地球与行星天体物理 · 物理学 2022-08-10 G. Kovacs , I. Dekany , B. Karamiqucham , G. Chen , G. Zhou , M. Rabus , T. Kovacs

We assess broadband color filters for the two fast cameras on the PLAnetary Transits and Oscillations (PLATO) of stars space mission with respect to exoplanetary atmospheric characterization. We focus on Ultra Hot Jupiters and Hot Jupiters…

Submillimeter emission lines of carbon monoxide (CO) in Titan's atmosphere provide excellent probes of atmospheric temperature due to the molecule's long chemical lifetime and stable, well constrained volume mixing ratio. Here we present…

With the operation of JWST, atmospheric characterization has now extended to low-mass exoplanets. In compact multiplanetary systems, secular spin-orbital resonance may preserve high obliquities and asynchronous rotation even for…

地球与行星天体物理 · 物理学 2026-01-27 Yanhong Lai , Xianyu Tan , Yubo Su

Kepler-452b is currently the best example of an Earth-size planet in the habitable zone of a sun-like star, a type of planet whose number of detections is expected to increase in the future. Searching for biosignatures in the supposedly…

地球与行星天体物理 · 物理学 2017-07-26 Laura Silva , Giovanni Vladilo , Giuseppe Murante , Antonello Provenzale

Properties of planetary atmospheres, ionospheres, and magnetospheres are difficult to measure from Earth. Radio occultations are a common method for measuring these properties, but they traditionally rely on radio transmissions from a…

地球与行星天体物理 · 物理学 2017-02-24 Paul Withers , Marissa F. Vogt

With a temperature akin to an M-dwarf, WASP-33b is among the hottest Jupiters known, making it an ideal target for high-resolution optical spectroscopy. By analyzing both transmission and emission spectra, we aim to substantiate previous…

地球与行星天体物理 · 物理学 2020-08-12 Miranda K. Herman , Ernst J. W. de Mooij , Ray Jayawardhana , Matteo Brogi

The detection of sulphur species in the Martian atmosphere would be a strong indicator of volcanic outgassing from the surface of Mars. We wish to establish the presence of SO2, H2S, or OCS in the Martian atmosphere or determine upper…

Young transiting exoplanets provide unique opportunities to probe planetary atmospheres during the critical early phases of evolution. HIP 67522 b, a 17 Myr old hot Jupiter with an extraordinarily low bulk density, represents an ideal…

地球与行星天体物理 · 物理学 2026-04-23 A. Lavail , F. Debras , B. Klein , E. Chabrol , S. Vinatier , T. Hood , A. Masson , J. V. Seidel , C. Moutou , S. Aigrain , A. Meech , O. Barragán

KELT-11b is an inflated sub-Saturn with a hot atmosphere and that orbits a bright evolved subgiant star, making it a prime choice for atmospheric characterization, but that transits its host star for more than seven hours. We observed this…

The hot-Jupiter HAT-P-2b has become a prime target for Spitzer Space Telescope observations aimed at understanding the atmospheric response of exoplanets on highly eccentric orbits. Here we present a suite of three-dimensional atmospheric…

地球与行星天体物理 · 物理学 2015-06-22 Nikole K. Lewis , Adam P. Showman , Jonathan J. Fortney , Heather A. Knutson , Mark S. Marley

Observations of Pluto's companion planet Charon have so far yielded no compelling evidence for a persistent atmosphere. However, with the upcoming encounter of New Horizons at the Pluto-Charon system, sensitivity to detection of a possible…

地球与行星天体物理 · 物理学 2016-05-31 Joshua A. Kammer , S. Alan Stern

The flow of material from Io's volcanoes into the Io plasma torus, out into the magnetosphere, and along field lines into Jupiter's upper atmosphere is not adequately understood. The lack of observations of spatial and temporal variations…

地球与行星天体物理 · 物理学 2017-03-29 Phillip H. Phipps , Paul Withers

The observations made during the Voyager 2 flyby have shown that the stratosphere of Uranus and Neptune are warmer than expected by previous models. In addition, no seasonal variability of the thermal structure has been observed on Uranus…

Context. Observationally constraining the atmospheric temperature-pressure (TP) profile of exoplanets is an important step forward for improving planetary atmosphere models, further enabling one to place the detection of spectral features…

This paper reports the detection and the measurements of occultations of the two transiting hot giant exoplanets Kepler-5b and Kepler-6b by their parent stars. The observations are obtained in the near infrared with Spitzer Space Telescope…

The atmospheric composition of exoplanets with masses between 2 and 10 M$_\oplus$ is poorly understood. In that regard, the sub-Neptune K2-18b, which is subject to Earth-like stellar irradiation, offers a valuable opportunity for the…

地球与行星天体物理 · 物理学 2021-02-03 Doriann Blain , Benjamin Charnay , Bruno Bézard