Results 91 to 100 of about 3,834 (215)

Influence of CO versus CH4 on organic haze formation in atmospheres of diverse terrestrial exoplanets

Astronomy & Astrophysics
Context. Terrestrial exoplanets are expected to host secondary, high-metallicity atmospheres derived from the outgassing of volatiles such as N2, CO2, H2O, CH4, and CO.
Wang Sai, Yang Zhengbo, Li Haixin, He Chao, Wang Yingjian, Luo Xiao’ou, Liu Yu, Hörst Sarah M., Moran Sarah E., Vuitton Véronique, Flandinet Laurène, McGuiggan Patricia   +11 more
doaj   +1 more source

Photoevaporation from water-rich exoplanet atmospheres

Planets orbiting close to their host stars face a significant threat from photoevaporation, which can potentially erode their atmospheres to the point of complete removal.
Harbach, Laura
core   +1 more source

3D radiative-transfer for exoplanet atmospheres. gCMCRT: a GPU accelerated MCRT code

, 2022
Radiative-transfer (RT) is a key component for investigating atmospheres of planetary bodies. With the 3D nature of exoplanet atmospheres being important in giving rise to their observable properties, accurate and fast 3D methods are required to be ...
Christie, Duncan, Lee, Elspeth K. H., Lee, Elspeth K.H., Lee, Elspeth K.H.,, Grimm, Simon L.,, Baeyens, Robin, Wardenier, Joost P.,, Prinoth, Bibiana,, Deitrick, Russell,, Christie, Duncan,, Deitrick, Russell, Parmentier, Vivien,, Wardenier, Joost P., Prinoth, Bibiana, Mayne, Nathan, Parmentier, Vivien, Roman, Michael,, Thorsbro, Brian,, Carone, Ludmila,, Kitzmann, Daniel, Baeyens, Robin,, Mayne, Nathan,, Thorsbro, Brian, Grimm, Simon L., Carone, Ludmila, Kitzmann, Daniel,, Roman, Michael   +26 more
core   +1 more source

Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies

Astronomische Nachrichten, Volume 347, Issue 2, February 2026.
ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley   +1 more source

Modeling Noncondensing Compositional Convection for Applications to Super-Earth and Sub-Neptune Atmospheres

The Astrophysical Journal
Compositional convection is atmospheric mixing driven by density variations caused by compositional gradients. Previous studies have suggested that compositional gradients of atmospheric trace species within planetary atmospheres can impact convection ...
Namrah Habib, Raymond T. Pierrehumbert
doaj   +1 more source

Abiotic ozone and oxygen in atmospheres similar to prebiotic earth

, 2014
The search for life on planets outside our solar system will use spectroscopic identification of atmospheric biosignatures. The most robust remotely detectable potential biosignature is considered to be the detection of oxygen (O2) or ozone (O3 ...
Domagal-Goldman, Shawn D., Robinson, T.D., Segura, A., Claire, Mark W., Claire, M.W., Meadows, Victoria S., Meadows, V.S., Domagal-Goldman, S.D., Robinson, Tyler D., Segura, Antigona   +9 more
core   +1 more source

Diagnosing Clouds and Hazes in Exoplanet Atmospheres [PDF]

, 2015
Exoplanet atmospheres provide a probe into the conditions on alien worlds, from hot Jupiters to Super-Earths. We can now glimpse the behaviour of extreme solar systems that defy our understanding of planet formation and capture our imaginations about the
Fraine, Jonathan David
core   +1 more source

Statistical Trends in JWST Transiting Exoplanet Atmospheres

The Astrophysical Journal
Our brains are hardwired for pattern recognition as correlations are useful for predicting and understanding nature. As more exoplanet atmospheres are being characterized with JWST, we are starting to unveil their properties on a population level.
Guangwei Fu, Kevin B. Stevenson, David K. Sing, Sagnick Mukherjee, Luis Welbanks, Daniel Thorngren, Shang-Min Tsai, Peter Gao, Joshua Lothringer, Thomas G. Beatty, Cyril Gapp, Thomas M. Evans-Soma, Romain Allart, Stefan Pelletier, Pa Chia Thao, Andrew W. Mann   +15 more
doaj   +1 more source

Exoplanet Atmospheres with JWST

, 2022
Planetary atmospheres are diverse. They hold key insights into the complex physics and chemistry that has shaped them through formation. In this talk I focus on the understanding we have gained on exoplanet atmospheres from transiting studies, including the importance of wide wavelength coverage.
openaire   +1 more source

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. VII. Molecular Mapping Performance with JWST/MIRI MRS: VHS 1256 b as a Case Study

The Astronomical Journal
VHS 1256 b was the first planetary-mass companion to be observed with the James Webb Space Telescope’s Mid-Infrared Instrument (JWST/MIRI) using the Medium-Resolution Spectrometer (MRS).
Mathilde Mâlin, Anthony Boccaletti, Benjamin Charnay, Laurent Pueyo, Alexis Bidot, Polychronis Patapis, Sasha Hinkley, Simon Petrus, Niall Whiteford, Marshall Perrin, Beth A. Biller, Gabriele Cugno, Thayne Currie, Camilla Danielski, Thomas Henning, Kielan K. W. Hoch, Markus Janson, Jens Kammerer, Elisabeth C. Matthews, Evert Nasedkin, Paulina Palma-Bifani, Isabel Rebollido, Matthias Samland, Andrew Skemer, Jordan M. Stone, Genaro Suárez, Ben J. Sutlieff, Motohide Tamura, Christopher A. Theissen, Johanna M. Vos, Zhoujian Zhang, Alice Zurlo, The Direct Observations of Exoplanetary Systems ERS Collaboration   +32 more
doaj   +1 more source