Results 41 to 50 of about 811,285 (331)

The Hidden Depths of Planetary Atmospheres [PDF]

The Astrophysical Journal, 2018
Abstract Atmospheric regions below a refractive boundary are hidden in limb observations. Refraction thus creates a gray continuum in the planet’s transmission spectrum, which can hide spectral features associated with sources of atmospheric opacity.
Yan Bétrémieux, Mark R. Swain
openaire   +4 more sources

Composition of Early Planetary Atmospheres II: Coupled Dust and Chemical Evolution in Protoplanetary Disks [PDF]

, 2017
We present the next step in a series of papers devoted to connecting the composition of the atmospheres of forming planets with the chemistry of their natal evolving protoplanetary disks.
A. Cridland, R. Pudritz, T. Birnstiel, L. Cleeves, E. Bergin   +4 more
semanticscholar   +1 more source

The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256–1257 b [PDF]

Astrophysical Journal Letters, 2022
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a
B. Miles, B. Biller, P. Patapis, Kadin Worthen, E. Rickman, K. Hoch, A. Skemer, M. Perrin, N. Whiteford, Christine H. Chen, B. Sargent, S. Mukherjee, C. Morley, S. Moran, M. Bonnefoy, S. Petrus, A. Carter, É. Choquet, S. Hinkley, K. Ward-Duong, J. Leisenring, M. Millar-Blanchaer, L. Pueyo, S. Ray, S. Sallum, K. Stapelfeldt, J. Stone, Jason J. Wang, O. Absil, W. Balmer, A. Boccaletti, M. Bonavita, M. Booth, B. Bowler, G. Chauvin, V. Christiaens, T. Currie, C. Danielski, J. Fortney, Julien H. Girard, C. Grady, A. Greenbaum, T. Henning, D. Hines, M. Janson, P. Kalas, J. Kammerer, G. Kennedy, M. Kenworthy, P. Kervella, P. Lagage, Ben W. P. Lew, Michael C. Liu, B. Macintosh, S. Marino, M. Marley, C. Marois, E. Matthews, B. Matthews, D. Mawet, M. McElwain, S. Metchev, M. Meyer, P. Mollière, E. Pantin, A. Quirrenbach, I. Rebollido, B. Ren, G. Schneider, M. Vasist, M. Wyatt, Yifan Zhou, Zackery W. Briesemeister, M. Bryan, P. Calissendorff, F. Cantalloube, G. Cugno, Matthew de Furio, T. Dupuy, S. Factor, J. Faherty, M. Fitzgerald, K. Franson, Eileen C. Gonzales, C. Hood, A. Howe, A. Kraus, M. Kuzuhara, A. Lagrange, Kellen D. Lawson, C. Lazzoni, Pengyu Liu, J. Llop-Sayson, J. Lloyd, Raquel A. Martinez, J. Mazoyer, S. Quanz, J. A. Redai, M. Samland, J. Schlieder, Motohide Tamura, Xianyu Tan, T. Uyama, A. Vigan, J. Vos, K. Wagner, S. Wolff, M. Ygouf, Xi Zhang, Keming Zhang, Zhoujian Zhang   +110 more
semanticscholar   +1 more source

The Inhomogeneity Effect. II. Rotational and Orbital States Impact Planetary Cooling

The Astrophysical Journal, 2023
We generalize the theory of the inhomogeneity effect to enable comparison among different inhomogeneous planets. A metric of inhomogeneity based on the cumulative distribution function is applied to investigate the dependence of planetary cooling on ...
Xi Zhang
doaj   +1 more source

Spectroscopic detection and characterisation of planetary atmospheres

EPJ Web of Conferences, 2011
Space based broadband infrared observations of close orbiting extrasolar giant planets at transit and secondary eclipse have proved a successful means of determining atmospheric spectral energy distributions and molecular composition.
Collier Cameron A., Leigh C.J., Rice E.L., Prato L., Hansen B.M.S., Barber R.J., Jones H.R.A., Barman T.S., Jones H.R.A., Barnes J.R., Pinfield D.J., Jenkins J.S., Segransan D.   +12 more
doaj   +1 more source

The Inhomogeneity Effect. I. Inhomogeneous Surface and Atmosphere Accelerate Planetary Cooling

The Astrophysical Journal, 2023
We propose a general principle that under radiative-convective equilibrium, the spatial and temporal variations in a planet’s surface and atmosphere tend to increase its cooling.
Xi Zhang
doaj   +1 more source

HNCO-based synthesis of formamide in planetary atmospheres

Astronomy & Astrophysics, 2018
Time-resolved Fourier transform infrared emission spectroscopy, Fourier transform absorption infrared spectroscopy, and high-resolution UV–ViS emission spectroscopy have been used to characterize the chemistry of isocyanic acid (HNCO) under glow ...
M. Ferus, V. Laitl, A. Knížek, P. Kubelík, J. Šponer, J. Kara, J. Šponer, B. Lefloch, G. Cassone, S. Civiš   +9 more
semanticscholar   +1 more source

On Detecting Biospheres from Chemical Thermodynamic Disequilibrium in Planetary Atmospheres. [PDF]

Astrobiology, 2015
Atmospheric chemical disequilibrium has been proposed as a method for detecting extraterrestrial biospheres from exoplanet observations. Chemical disequilibrium is potentially a generalized biosignature since it makes no assumptions about particular ...
J. Krissansen‐Totton, David S. Bergsman, D. Catling   +2 more
semanticscholar   +1 more source

PlanetCARMA: A New Framework for Studying the Microphysics of Planetary Atmospheres

Atmosphere, 2020
The Community Aerosol and Radiation Model for Atmospheres (CARMA) has been updated to apply to atmospheres of the Solar System outside of Earth. CARMA, as its name suggests, is a coupled aerosol microphysics and radiative transfer model and includes the ...
Erika Barth
doaj   +1 more source

A Radiative-convective Model for Terrestrial Planets with Self-consistent Patchy Clouds

The Planetary Science Journal, 2023
Clouds are ubiquitous: they arise for every solar system planet that possesses an atmosphere and have also been suggested as a leading mechanism for obscuring spectral features in exoplanet observations.
James D. Windsor, Tyler D. Robinson, Ravi kumar Kopparapu, Amber V. Young, David E. Trilling, Joe LLama   +5 more
doaj   +1 more source