Results 131 to 140 of about 15,442 (228)

JWST/NIRISS Reveals the Water-rich “Steam World” Atmosphere of GJ 9827 d

The Astrophysical Journal Letters
With sizable volatile envelopes but smaller radii than the solar system ice giants, sub-Neptunes have been revealed as one of the most common types of planet in the galaxy. While the spectroscopic characterization of larger sub-Neptunes (2.5–4 R _⊕ ) has
Caroline Piaulet-Ghorayeb, Björn Benneke, Michael Radica, Eshan Raul, Louis-Philippe Coulombe, Eva-Maria Ahrer, Daria Kubyshkina, Ward S. Howard, Joshua Krissansen-Totton, Ryan J. MacDonald, Pierre-Alexis Roy, Amy Louca, Duncan Christie, Marylou Fournier-Tondreau, Romain Allart, Yamila Miguel, Hilke E. Schlichting, Luis Welbanks, Charles Cadieux, Caroline Dorn, Thomas M. Evans-Soma, Jonathan J. Fortney, Raymond Pierrehumbert, David Lafrenière, Lorena Acuña, Thaddeus Komacek, Hamish Innes, Thomas G. Beatty, Ryan Cloutier, René Doyon, Anna Gagnebin, Cyril Gapp, Heather A. Knutson   +32 more
doaj   +1 more source

Seasonal Changes in the Atmosphere of HD 80606 b Observed with JWST’s NIRSpec/G395H

The Astronomical Journal
High-eccentricity gas giant planets serve as unique laboratories for studying the thermal and chemical properties of H/He-dominated atmospheres. One of the most extreme cases is HD 80606 b—a hot Jupiter orbiting a Sun-like star with an eccentricity of 0 ...
James T. Sikora, Jason F. Rowe, Jared Splinter, Saugata Barat, Lisa Dang, Nicolas B. Cowan, Thomas Barclay, Knicole D. Colón, Jean-Michel Désert, Stephen R. Kane, Joe Llama, Hinna Shivkumar, Keivan G. Stassun, Elisa V. Quintana   +13 more
doaj   +1 more source

Challenge of direct imaging of exoplanets within structures: disentangling real signal from point source from background light [PDF]

Jialin Li, Laird M. Close, Jared R. Males, Sebastiaan Y. Haffert, Alycia J. Weinberger, Katherine B. Follette, Kevin Wagner, Dániel Apai, Ya-Lin Wu, Joseph D. Long, Laura M. Pérez, Logan Pearce, Jay K. Kueny, Eden McEwen, Kyle Van Gorkom, Olivier Guyon, Maggie Kautz, Alexander D. Hedglen, Warren B. Foster, Roz Roberts, Jennifer Lumbres, Lauren Schatz   +21 more
openalex   +1 more source

A Panchromatic Characterization of the Evening and Morning Atmosphere of WASP-107 b: Composition and Cloud Variations, and Insight into the Effect of Stellar Contamination

The Astronomical Journal
Limb-resolved transmission spectroscopy has the potential to transform our understanding of exoplanetary atmospheres. By separately measuring the transmission spectra of the evening and morning limbs, these atmospheric regions can be individually ...
Matthew M. Murphy, Thomas G. Beatty, Everett Schlawin, Taylor J. Bell, Michael Radica, Thomas D. Kennedy, Nishil Mehta, Luis Welbanks, Michael R. Line, Vivien Parmentier, Thomas P. Greene, Sagnick Mukherjee, Jonathan J. Fortney, Kazumasa Ohno, Lindsey Wiser, Kenneth Arnold, Emily Rauscher, Isaac R. Edelman, Marcia J. Rieke   +18 more
doaj   +1 more source

Internal Structure and Magnetic Moment of Rocky Planets. Application to the first exoplanets discovered by TESS

, 2022
Rodríguez-Mozos, Jose-María, A. Moya
openalex   +1 more source

Fractal Aggregate Aerosols in the Virga Cloud Code. II. Exploring the Effects of Key Cloud Parameters in Warm Neptune, Hot Jupiter and Brown Dwarf Atmospheres

The Astrophysical Journal
Aerosols and clouds are expected to be ubiquitous in exoplanet and brown dwarf atmospheres, where they can have a significant impact on transmission and emission spectra.
Matt G. Lodge, Sarah E. Moran, Hannah R. Wakeford, Zoë M. Leinhardt, Mark S. Marley   +4 more
doaj   +1 more source

Structure and evolution of the first CoRoT exoplanets: probing the brown dwarf/planet overlapping mass regime [PDF]

, 2009
Jérémy Leconte, I. Baraffe, G. Chabrier, Travis Barman, B. Levrard   +4 more
openalex   +1 more source

TOI-6324 b: An Earth-mass Ultra-short-period Planet Transiting a Nearby M Dwarf

The Astrophysical Journal Letters
We report the confirmation of TOI-6324 b, an Earth-sized (1.059 ± 0.041 R _⊕ ) ultra-short-period (USP) planet orbiting a nearby (∼20 pc) M dwarf. Using the newly commissioned Keck Planet Finder spectrograph, we have measured the mass of TOI-6324 b 1.17 ±
Rena A. Lee, Fei Dai, Andrew W. Howard, Samuel Halverson, Jonathan Gomez Barrientos, Michael Greklek-McKeon, Heather A. Knutson, Benjamin J. Fulton, Guđmundur Stefánsson, Jack Lubin, Howard Isaacson, Casey L. Brinkman, Nicholas Saunders, Daniel Hey, Daniel Huber, Lauren M. Weiss, Leslie A. Rogers, Diana Valencia, Mykhaylo Plotnykov, Kimberly Paragas, Renyu Hu, Te Han, Erik A. Petigura, Ryan Rubenzahl, David R. Ciardi, Aaron Householder, Gregory J. Gilbert, J. M. Joel Ong, Jingwen Zhang, Jacob Luhn, Luke Handley, Corey Beard, Steven Giacalone, Rae Holcomb, Judah Van Zandt, Ashley D. Baker, Max Brodheim, Matt Brown, David Charbonneau, Karen A. Collins, Ian J. M. Crossfield, William Deich, Xavier Dumusque, Steven R. Gibson, Emily Gilbert, Grant M. Hill, Bradford Holden, Jon M. Jenkins, Stephen Kaye, Russ R. Laher, Kyle Lanclos, W. Garett Levine, Joel Payne, Alex S. Polanski, John O’Meara, George R. Ricker, Kodi Rider, Paul Robertson, Arpita Roy, Joshua E. Schlieder, Christian Schwab, Sara Seager, Abby P. Shaum, Martin M. Sirk, Stephanie Striegel, Johanna Teske, John Valliant, Roland Vanderspek, Gautam Vasisht, Josh Walawender, Sharon Xuesong Wang, Joshua N. Winn, Edward Wishnow, Sherry Yeh   +73 more
doaj   +1 more source

Potential Interior Structures and Habitability of Super-Earth Exoplanets LHS 1140 b, K2-18 b, TOI-1452 b and TOI-1468 c [PDF]

Mangesh Daspute, Amri Wandel, Ravi Kopparapu, V. Perdelwitz, Jerusalem Tamirat Teklu, L. Tal-Or   +5 more
openalex   +1 more source

Exoplanet Technosignature Detection of Orbital Terraforming Mirror Structures

The search for technosignatures no longer rests solely on radio signals. Modern wide-field surveys now make it possible to detect engineered structures at interstellar distances. Among the most promising of these are space-based mirrors, as large reflective constructs designed to manipulate planetary climates by increasing or reducing incoming sunlight.
openaire   +1 more source