Results 21 to 30 of about 82,988 (172)

Retrieving C and O Abundance of HR 8799 c by Combining High- and Low-resolution Data

The Astronomical Journal, 2022
The formation and evolution pathway for the directly imaged multiplanetary system HR 8799 remains mysterious. Accurate constraints on the chemical composition of the planetary atmosphere(s) are key to solving the mystery.
Ji Wang, Jason J. Wang, Jean-Baptiste Ruffio, Geoffrey A. Blake, Dimitri Mawet, Ashley Baker, Randall Bartos, Charlotte Z. Bond, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Nemanja Jovanovic, Ronald Lopez, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Sam Ragland, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Peter Wizinowich, Jerry W. Xuan, Marta L. Bryan, Arpita Roy, Nicole L. Wallack   +31 more
doaj   +1 more source

Understanding Exoplanet Atmospheres [PDF]

, 2022
The study of exoplanet atmospheres is a blossoming field. Over the past two decades, dozens of hot gas giant atmospheres have been observed using a variety of techniques with both space and ground telescopes, revealing the presence of water, the ...
Zhang, Zhaoxi Michael
core   +1 more source

exoplanet: Gradient-based probabilistic inference for exoplanet data & other astronomical time series

, 2021
What's Changed Adding test and fixing deprecated unit parameters by @dfm in https://github.com/exoplanet-dev/exoplanet/pull/211 Removing old ValueError in Keplerian orbit that should never be hit by @dfm in https://github.com/exoplanet-dev/exoplanet ...
Savel, Arjun, Morris, Brett M., Bouma, Luke G., Luger, Rodrigo, Brandt, Timothy D., Hey, Daniel R., Gilbert, Emily, David, Trevor, Agol, Eric, Savel, Arjun B., Hey, Daniel, Foreman-Mackey, Daniel, Bouma, Luke, Price-Whelan, Adrian, Gordon, Tyler A., Barclay, Thomas, Brandt, Timothy, Morris, Brett, Czekala, Ian, Gilbert, Emily A., David, Trevor J., Dong, Jiayin, Price-Whelan, Adrian M., Hedges, Christina, Gordon, Tyler   +24 more
core   +1 more source

High-resolution Transmission Spectroscopy of the Terrestrial Exoplanet GJ 486b

The Astronomical Journal, 2023
Terrestrial exoplanets orbiting M-dwarf stars are promising targets for transmission spectroscopy with existing or near-future instrumentation. The atmospheric composition of such rocky planets remains an open question, especially given the high X-ray ...
Andrew Ridden-Harper, Stevanus K. Nugroho, Laura Flagg, Ray Jayawardhana, Jake D. Turner, Ernst de Mooij, Ryan MacDonald, Emily Deibert, Motohide Tamura, Takayuki Kotani, Teruyuki Hirano, Masayuki Kuzuhara, Masashi Omiya, Nobuhiko Kusakabe   +13 more
doaj   +1 more source

Cloud formation in exoplanet atmospheres : nucleation of small molecular clusters [PDF]

It has been inferred that many exoplanets host clouds in their atmospheres. Understanding the processes through which these clouds form, and being able to model them is essential for our understanding of their climate and to explain our observations. The
Sindel, Jan Philip
core   +1 more source

The Sensitivity of Eclipse Mapping to Planetary Rotation

The Astronomical Journal, 2022
Mapping exoplanets across phases and during secondary eclipse is a powerful technique for characterizing Hot Jupiters in emission. Since these planets are expected to rotate about axes normal to their orbital planes, with rotation periods synchronized ...
Arthur D. Adams, Emily Rauscher
doaj   +1 more source

Exoplanet atmospheres: A theoretical outlook

, 2010
With over two dozen exoplanet atmospheres observed today, the field of exoplanet atmospheres is solidly established. The highlights of exoplanet atmosphere studies include: detection of molecular spectral features; constraints on atmospheric vertical ...
Sara Seager
core   +1 more source

Haze Evolution in Temperate Exoplanet Atmospheres: the Laboratory Perspective

, 2022
International audienceWith thousands of confirmed detections of exoplanets, recent efforts are focusing on characterizing their atmospheres through transmission spectroscopy.
Kempton, Eliza, Mcguiggan, Patricia, Lewis, Nikole, He, Chao, Thompson, Maggie, Dymont, Austin, Moses, Julianne, Yu, Xinting, Zhang, Xi, Horst, Sarah, Valenti, Jeff, Gao, Peter, Moran, Sarah, Powell, Diana, Fortney, Jonathan, Morley, Caroline, Vuitton, Véronique   +16 more
core   +2 more sources

Piercing Through the Haze: Characterizing Titan-like Terrestrial Exoplanets with JWST

The Astronomical Journal
As we enter a new era of using JWST to characterize exoplanet atmospheres, a top priority is defining observational needs and parameters in the search for life on an exoplanet. Although some studies have begun to consider Titan-like exoplanet atmospheres,
L. C. Mayorga, Jacob Lustig-Yaeger, Andrew P. Lincowski, Kathleen E. Mandt, Ryan C. Felton, Adrienn Luspay-Kuti, Kristin S. Sotzen, Cameron A. Gutgsell   +7 more
doaj   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ15N Integrity of Nitrogen‐Poor Samples

Rapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.
ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Kunmanee Bubphamanee, Andrew Schauer, Roger Buick   +2 more
wiley   +1 more source