Results 81 to 90 of about 14,314 (230)

Determining the Detectability of H2O with Photometric Observations Using Bayesian Analysis for Remote Biosignature Identification on exo-Earths (BARBIE)

The Astronomical Journal
We examine the detectability of water (H _2 O) in the reflected-light spectrum of an Earth-like exoplanet assuming a photometric observational approach rather than spectroscopic. By quantifying the detectability as a function of normalized exposure time,
Natasha Latouf, Chris Stark, Avi M. Mandell, Vincent Kofman   +3 more
doaj   +1 more source

Hubble Space Telescope Transmission Spectroscopy for the Temperate Sub-Neptune TOI-270 d: A Possible Hydrogen-rich Atmosphere Containing Water Vapor

The Astronomical Journal, 2023
TOI-270 d is a temperate sub-Neptune discovered by the Transiting Exoplanet Survey Satellite (TESS) around a bright ( J = 9.1 mag) M3V host star. With an approximate radius of 2 R _⊕ and equilibrium temperature of 350 K, TOI-270 d is one of the most ...
Thomas Mikal-Evans, Nikku Madhusudhan, Jason Dittmann, Maximilian N. Günther, Luis Welbanks, Vincent Van Eylen, Ian J. M. Crossfield, Tansu Daylan, Laura Kreidberg   +8 more
doaj   +1 more source

Altitude Profile and Isotopic Composition for N2 From Pioneer Venus Mass Spectra

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract We report the highest resolution altitude profile and isotopic composition for N2 at Venus, to date. These results were obtained through re‐analysis of data acquired by the Pioneer Venus Large Probe Neutral Mass Spectrometer (LNMS). The N2 is non‐uniformly mixed across the clouds and sub‐cloud atmosphere (∼59–15 km) yet uniformly mixed across ...
R. Mogul, S. S. Limaye, M. J. Way
wiley   +1 more source

Searching for Neutral Hydrogen Escape from the 120 Myr Old Sub-Neptune HIP94235b using HST

The Astronomical Journal
HIP94235 b, a 120 Myr old sub-Neptune, provides us the unique opportunity to study mass loss at a pivotal stage of the system’s evolution: the end of a 100 Myr old phase of intense XUV irradiation.
Ava Morrissey, George Zhou, Chelsea X. Huang, Duncan Wright, Caitlin Auger, Keighley E. Rockcliffe, Elisabeth R. Newton, James G. Rogers, Neale Gibson, Nataliea Lowson, L. C. Mayorga, Robert A. Wittenmyer   +11 more
doaj   +1 more source

All along the line of sight: a closer look at opening angles and absorption regions in the atmospheres of transiting exoplanets [PDF]

, 2021
Joost P. Wardenier, Vivien Parmentier, Elspeth K. H. Lee   +2 more
openalex   +1 more source

Atmospheric Circulation of Tide-Locked Exoplanets

Annual Review of Fluid Mechanics, 2019
Tide-locked planets are planets in which tidal stresses from the host star have spun down the planet's rotation to the point where its length of sidereal day equals its length of year. In a nearly circular orbit, such planets have a permanent dayside and a permanent nightside, leading to extreme heating contrasts.
Pierrehumbert, R, Hammond, M
openaire   +2 more sources

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

Thermal Phase Curves in Hot Gas Giant Exoplanets Exhibit a Complex Dependence on Planetary Properties

The Astrophysical Journal
We present a catalog of uniformly processed 3.6 μ m and 4.5 μ m band exoplanet thermal phase curves based on Infrared Array Camera observations obtained from the Spitzer Heritage Archive.
Mark R. Swain, Kyle A. Pearson, Thaddeus D. Komacek, Geoffrey Bryden, Emeline Fromont, Gautam Vasisht, Gael Roudier, Robert T. Zellem   +7 more
doaj   +1 more source

Imaging Cool Giant Planets in Reflected Light: Science Investigations and Synergy with Habitable Planets [PDF]

, 2019
Planned astronomical observatories of the 2020s will be capable of obtaining reflected light photometry and spectroscopy of cool extrasolar giant planets.
Arney, Giada, Bailey, Vanessa, Batalha, Natasha, Beichman, Charles, Benneke, Björn, Blecic, Jasmina, Cahoy, Kerri, Chilcote, Jeffrey, Domagal-Goldman, Shawn, Dressing, Courtney, Fitzgerald, Michael, Fortney, Jonathan, Freedman, Richard, Gelino, Dawn, Gizis, John, Greene, Thomas, Guyon, Olivier, Hammel, Heidi, Hasegawa, Yasuhiro, Jovanovic, Nemanja, Konopacky, Quinn, Kopparapu, Ravi, Lewis, Nikole, Liu, Michael, Lopez, Eric, Lunine, Jonathan, Lupu, Roxana, Macintosh, Bruce, Mandt, Kathleen, Marley, Mark, Marois, Christian, Mawet, Dimitri, Mayorga, Laura, Morley, Caroline, Nielsen, Eric, Roberge, Aki, Serabyn, Eugene, Skemer, Andrew, Stapelfeldt, Karl, Visscher, Channon, Wang, Jason   +40 more
core   +1 more source

Investigating the physical properties of transiting hot Jupiters with the 1.5-m Kuiper Telescope

, 2017
We present new photometric data of 11 hot Jupiter transiting exoplanets (CoRoT-12b, HAT-P-5b, HAT-P-12b, HAT-P-33b, HAT-P-37b, WASP-2b, WASP-24b, WASP-60b, WASP-80b, WASP-103b, XO-3b) in order to update their planetary parameters and to constrain ...
Berube, Michael P., Biddle, Lauren I., Cates, Ian T., Cook, Kendall L., Hardegree-Ullman, Kevin K., Johnson, Robert E., Jones, Christen K., Leiter, Robin M., Nieberding, Megan N., Pearson, Kyle A., Raphael, Brandon, Teske, Johanna K., Thompson, Robert M., Turner, Jake D., Wallace, Spencer, Watson, Zachary T.   +15 more
core   +1 more source