Results 91 to 100 of about 468,207 (173)

Global Chemical Transport on Hot Jupiters: Insights from the 2D VULCAN Photochemical Model

The Astrophysical Journal
The atmospheric dynamics of tidally locked hot Jupiters is characterized by strong equatorial winds. Understanding the interaction between global circulation and chemistry is crucial in atmospheric studies and interpreting observations.
Shang-Min Tsai, Vivien Parmentier, João M. Mendonça, Xianyu Tan, Russell Deitrick, Mark Hammond, Arjun B. Savel, Xi Zhang, Raymond T. Pierrehumbert, Edward W. Schwieterman   +9 more
doaj   +1 more source

Into the red: An M-band study of the chemistry and rotation of β Pictoris b at high spectral resolution [PDF]

Monthly notices of the Royal Astronomical Society
High-resolution cross-correlation spectroscopy (HRCCS) combined with adaptive optics has been enormously successful in advancing our knowledge of exoplanet atmospheres, from chemistry to rotation and atmospheric dynamics.
Luke T Parker, J. Birkby, Rico Landman, J. Wardenier, M. E. Young, Sophia R Vaughan, Lennart van Sluijs, Matteo Brogi, V. Parmentier, M. Line   +9 more
semanticscholar   +1 more source

Inertia of Ionospheric Conductance During Electron Precipitation Events

Geophysical Research Letters, Volume 51, Issue 19, 16 October 2024.
Abstract Using the SuperThermal Electron Transport (STET) model coupled with the Super‐thermal Proton Electron Atomic Hydrogen—tRansport in the Ionosphere and Thermosphere (SPEAH‐RIT) codes, we demonstrate that temporal variability of ionospheric conductance is defined by several time scales: the temporal variations of the magnetospheric source, the ...
George V. Khazanov, Suk‐Bin Kang, Alex Glocer   +2 more
wiley   +1 more source

A Comprehensive Analysis of Spitzer 4.5 μm Phase Curves of Hot Jupiters

The Astronomical Journal
Although exoplanetary science was not initially projected to be a substantial part of the Spitzer mission, its exoplanet observations set the stage for current and future surveys with JWST and Ariel.
Lisa Dang, Taylor J. Bell, Ying (Zoe) Shu, Nicolas B. Cowan, Jacob L. Bean, Drake Deming, Eliza M.-R. Kempton, Megan Weiner Mansfield, Emily Rauscher, Vivien Parmentier, Alexandra Rochon, Kevin B. Stevenson, Mark Swain, Laura Kreidberg, Tiffany Kataria, Jean-Michel Désert, Robert Zellem, Jonathan J. Fortney, Nikole K. Lewis, Michael Line, Caroline Morley, Adam Showman   +21 more
doaj   +1 more source

A Blind Search for Transit Depth Variability with TESS

The Astronomical Journal, 2023
The phenomenon of transit depth variability offers a pathway through which processes such as exoplanet atmospheric activity and orbital dynamics can be studied.
Gavin Wang, Néstor Espinoza
doaj   +1 more source

JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS [PDF]

Astronomical Journal
We present the first spectroscopic characterization of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse observation.
Daniel Valentine, H. Wakeford, R. Challener, N. Batalha, N. Lewis, D. Grant, Elijah Mullens, L. Alderson, J. Goyal, R. MacDonald, E. M. May, S. Seager, Kevin B. Stevenson, Jeff A. Valenti, N. Allen, Néstor Espinoza, A. Glidden, A. Gressier, Jingcheng Huang, Zifan Lin, Douglas Long, D. Louie, M. Clampin, M. Perrin, R. P. van der Marel, C. M. Mountain   +25 more
semanticscholar   +1 more source

Geodynamics of Super‐Earth GJ 486b

Journal of Geophysical Research: Planets, Volume 129, Issue 10, October 2024.
Abstract Many super‐Earths are on very short orbits around their host star and, therefore, more likely to be tidally locked. Because this locking can lead to a strong contrast between the dayside and nightside surface temperatures, these super‐Earths could exhibit mantle convection patterns and tectonics that could differ significantly from those ...
Tobias G. Meier, Dan J. Bower, Tim Lichtenberg, Mark Hammond, Paul J. Tackley, Raymond T. Pierrehumbert, José A. Caballero, Shang‐Min Tsai, Megan Weiner Mansfield, Nicola Tosi, Philipp Baumeister   +10 more
wiley   +1 more source

The Metallicity and Carbon-to-oxygen Ratio of the Ultrahot Jupiter WASP-76b from Gemini-S/IGRINS

The Astronomical Journal
Measurements of the carbon-to-oxygen (C/O) ratios of exoplanet atmospheres can reveal details about their formation and evolution. Recently, high-resolution cross-correlation analysis has emerged as a method of precisely constraining the C/O ratios of ...
Megan Weiner Mansfield, Michael R. Line, Joost P. Wardenier, Matteo Brogi, Jacob L. Bean, Hayley Beltz, Peter Smith, Joseph A. Zalesky, Natasha Batalha, Eliza M.-R. Kempton, Benjamin T. Montet, James E. Owen, Peter Plavchan, Emily Rauscher   +13 more
doaj   +1 more source

Retrieval Survey of Metals in Six Ultrahot Jupiters: Trends in Chemistry, Rain-out, Ionization, and Atmospheric Dynamics

The Astronomical Journal, 2023
Ground-based high-resolution spectroscopy (HRS) has detected numerous chemical species and atmospheric dynamics in exoplanets, most notably ultrahot Jupiters (UHJs).
Siddharth Gandhi, Aurora Kesseli, Yapeng Zhang, Amy Louca, Ignas Snellen, Matteo Brogi, Yamila Miguel, Núria Casasayas-Barris, Stefan Pelletier, Rico Landman, Cathal Maguire, Neale P. Gibson   +11 more
doaj   +1 more source

Dynamically coupled kinetic chemistry in brown dwarf atmospheres -- II. Cloud and chemistry connections in directly imaged sub-Jupiter exoplanets [PDF]

arXiv, 2023
With JWST slated to gain high fidelity time dependent data on brown dwarf atmospheres, it is highly anticipated to do the same for directly imaged, sub-Jupiter exoplanets. With this new capability, the need for a full 3D understanding to explain spectral features and their time dependence is becoming a vital aspect for consideration.
arxiv