Results 31 to 40 of about 1,944 (221)

Photochemical Hazes Dramatically Alter Temperature Structure and Atmospheric Circulation in 3D Simulations of Hot Jupiters

open access: yesThe Astrophysical Journal, 2023
Photochemical hazes are expected to form in hot Jupiter atmospheres and may explain the strong scattering slopes and muted spectral features observed in the transmission spectra of many hot Jupiters.
Maria E. Steinrueck   +7 more
doaj   +1 more source

A Stellar Mass Dependence of Structured Disks: A Possible Link with Exoplanet Demographics [PDF]

open access: yesThe Astronomical Journal, 2021
Abstract Gaps in protoplanetary disks have long been hailed as signposts of planet formation. However, a direct link between exoplanets and disks remains hard to identify. We present a large sample study of ALMA disk surveys of nearby star-forming regions to disentangle this connection.
Nienke van der Marel, Gijs D. Mulders
openaire   +2 more sources

Individual and Statistical Characterization of the Giant Exoplanet Population [PDF]

open access: yes, 2021
The field of observational exoplanet astronomy has seen tremendous progress over the span of only a few decades. Now, we find ourselves at the dawn of a new era: the characterization of distant worlds.
Herman, Miranda Katelyn
core   +1 more source

TEMPERATURE STRUCTURE AND ATMOSPHERIC CIRCULATION OF DRY TIDALLY LOCKED ROCKY EXOPLANETS [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT Next-generation space telescopes will observe the atmospheres of rocky planets orbiting nearby M-dwarfs. Understanding these observations will require well-developed theory in addition to numerical simulations. Here we present theoretical models for the temperature structure and atmospheric circulation of dry, tidally locked ...
Daniel D. B. Koll, Dorian S. Abbot
openaire   +3 more sources

Spectra as windows into exoplanet atmospheres [PDF]

open access: yes, 2014
Understanding a planet’s atmosphere is a necessary condition for understanding not only the planet itself, but also its formation, structure, evolution, and habitability.
Burrows, Adam S.
core   +1 more source

Phase-curve Pollution of Exoplanet Transmission Spectra [PDF]

open access: yes, 2021
The occurrence of a planet transiting in front of its host star offers the opportunity to observe the planet's atmosphere filtering starlight. The fraction of occulted stellar flux is roughly proportional to the optically thick area of the planet, the ...
Lagage P. -O.   +4 more
core   +1 more source

The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds

open access: yesThe Astrophysical Journal
The demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub-Neptunes.
Aritra Chakrabarty   +3 more
doaj   +1 more source

Vertical structure of an exoplanet’s atmospheric jet stream

open access: yesNature
Ultra-hot Jupiters, an extreme class of planets not found in our solar system, provide a unique window into atmospheric processes. The extreme temperature contrasts between their day- and night-sides pose a fundamental climate puzzle: how is energy distributed?
Julia V. Seidel   +23 more
openaire   +3 more sources

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

open access: yesLaser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi   +5 more
wiley   +1 more source

The Role of Formation Location in Shaping Sulfur-, Nitrogen-, and Carbon-bearing Species in Super-Earth and Sub-Neptune Atmospheres

open access: yesThe Astrophysical Journal
Atmospheric compositions of sub-Neptunes and super-Earths are often interpreted as tracers of formation location relative to volatile ice lines. However, prolonged magma oceans can chemically equilibrate with primordial atmospheres and modify accreted ...
Aaron Werlen   +4 more
doaj   +1 more source

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