Results 71 to 80 of about 1,022 (196)

Helium in the Extended Atmosphere of the Warm Superpuff TOI-1420b

The Astronomical Journal
Superpuffs are planets with exceptionally low densities ( ρ ≲ 0.1 g cm ^−3 ) and core masses ( M _c ≲ 5 M _⊕ ). Many lower-mass ( M _p ≲ 10 M _⊕ ) superpuffs are expected to be unstable to catastrophic mass loss via photoevaporation and/or boil-off ...
Shreyas Vissapragada, Michael Greklek-McKeon, Dion Linssen, Morgan MacLeod, Daniel P. Thorngren, Peter Gao, Heather A. Knutson, David W. Latham, Mercedes López-Morales, Antonija Oklopčić, Jorge Pérez González, Morgan Saidel, Abigail Tumborang, Stephanie Yoshida   +13 more
doaj   +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

TOI-2005b: An Eccentric Warm Jupiter in Spin-orbit Alignment

The Astronomical Journal
We report the discovery and characterization of TOI-2005 b, a warm Jupiter on an eccentric ( e  ∼ 0.59), 17.3 days orbit around a V _mag = 9.867 rapidly rotating F-star.
Allyson Bieryla, Jiayin Dong, George Zhou, Jason D. Eastman, L. C. Mayorga, David W. Latham, Brad Carter, Chelsea X. Huang, Samuel N. Quinn, Karen A. Collins, Lyu Abe, Yuri Beletsky, Rafael Brahm, Knicole D. Colón, Zahra Essack, Tristan Guillot, Thomas Henning, Melissa J. Hobson, Keith Horne, Jon M. Jenkins, Matías I. Jones, Andrés Jordán, David Osip, George R. Ricker, Joseph E. Rodriguez, Jack Schulte, Richard P. Schwarz, Sara Seager, Avi Shporer, Olga Suarez, Thiam-Guan Tan, Eric B. Ting, Amaury Triaud, Andrew Vanderburg, Jesus Noel Villaseñor, Noah Vowell, Cristilyn N. Watkins, Joshua N. Winn, Carl Ziegler   +38 more
doaj   +1 more source

A ground-based KS-band detection of the thermal emission from the transiting exoplanet WASP-4b

, 2011
WOS
Cáceres, C., Minniti, D., Pietrzyński, G.   +2 more
openaire   +5 more sources

A Complex Systems Approach to Exoplanet Atmospheric Chemistry: New Prospects for Ruling Out the Possibility of Alien Life As We Know It

The Planetary Science Journal
The near-term ability to characterize terrestrial exoplanet atmospheres may bring us closer to discovering alien life through atmospheric data. However, remotely detectable candidate biosignature gases are subject to false-positive signals because they ...
Theresa Fisher, Estelle Janin, Sara Imari Walker   +2 more
doaj   +1 more source

An Eccentric Sub-Neptune Moving Into the Evaporation Desert

The Astrophysical Journal Letters
Though missions such as Kepler, K2, and TESS have discovered >2000 sub-Neptune and Neptunian planets, there is a dearth of such planets at close-in ( P ≲ 3 days) orbits. This feature, called the Neptune desert or the evaporation desert, is believed to be
Sydney A. Jenkins, Andrew Vanderburg, Ritika Sethi, Sarah Millholland, Joseph E. Rodriguez, Luca Fossati, Andreas Krenn, Emily Pass, Alexander Venner, R. Paul Butler, Hugh Osborn, Aaron Householder, Carl Ziegler, Juliette Becker, Perry Berlind, Allyson Bieryla, Christopher Broeg, Michael L. Calkins, Jeffrey D. Crane, Tansu Daylan, Julien de Wit, Jason D. Eastman, David Ehrenreich, Gilbert A. Esquerdo, Michael Fausnaugh, Yadira Gaibor, David W. Latham, Monika Lendl, Andrew W. Mayo, Gaetano Scandariato, Steve Shectman, Stephanie Striegel, Johanna Teske, Thomas G Wilson   +33 more
doaj   +1 more source

Biases from Missing a Small Planet in High Multiplicity Systems

The Astrophysical Journal Letters
In an era when we are charting multiple planets per system, one might wonder the extent to which “missing” (or failing to detect) a planet can skew our interpretation of the system architecture. We address this question with a simple experiment: starting
C. Alexander Thomas, Lauren M. Weiss, Matthias Y. He   +2 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Carving Out the Inner Edge of the Period Ratio Distribution through Giant Impacts

The Astrophysical Journal
The distribution of orbital period ratios between adjacent observed exoplanets is approximately uniform, but exhibits a strong falloff toward close orbital separations.
Kaitlyn Chen, Oswaldo Cardenas, Brandon Bonifacio, Nikolas Hall, Rori Kang, Daniel Tamayo   +5 more
doaj   +1 more source

Resonant and Ultra-short-period Planet Systems Are at Opposite Ends of the Exoplanet Age Distribution

The Astronomical Journal
Exoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual systems.
Stephen P. Schmidt, Kevin C. Schlaufman, Jacob H. Hamer   +2 more
doaj   +1 more source