Results 91 to 100 of about 1,870,265 (176)

Is the Atmosphere of the Ultra-hot Jupiter WASP-121 b Variable?

The Astrophysical Journal Supplement Series
We present a comprehensive analysis of the Hubble Space Telescope observations of the atmosphere of WASP-121 b, an ultra-hot Jupiter. After reducing the transit, eclipse, and phase-curve observations with a uniform methodology and addressing the biases ...
Q. Changeat, J. W. Skinner, J. Y-K. Cho, J. Nättilä, I. P. Waldmann, A. F. Al-Refaie, A. Dyrek, B. Edwards, T. Mikal-Evans, M. Joshua, G. Morello, N. Skaf, A. Tsiaras, O. Venot, K. H. Yip   +14 more
doaj   +1 more source

Three Years of High-contrast Imaging of the PDS 70 b and c Exoplanets at Hα with MagAO-X: Evidence of Strong Protoplanet Hα Variability and Circumplanetary Dust

The Astronomical Journal
We present 3 yr of high-contrast imaging of the PDS 70 b and c accreting protoplanets with the new extreme AO system MagAO-X as part of the MaxProtoPlanetS survey of H α protoplanets.
Laird M. Close, Jared R. Males, Jialin Li, Sebastiaan Y. Haffert, Joseph D. Long, Alexander D. Hedglen, Alycia J. Weinberger, Katherine B. Follette, Daniel Apai, Rene Doyon, Warren Foster, Victor Gasho, Kyle Van Gorkom, Olivier Guyon, Maggie Y. Kautz, Jay Kueny, Jennifer Lumbres, Avalon McLeod, Eden McEwen, Clarissa Pavao, Logan Pearce, Laura Perez, Lauren Schatz, Judit Szulágyi, Kevin Wagner, Ya-Lin Wu   +25 more
doaj   +1 more source

Enabling Robust Exoplanet Atmospheric Retrievals with Gaussian Processes

Figures and data for "Enabling Robust Exoplanet Atmospheric Retrievals with Gaussian Processes" (Rotman et al.
Peter McGill, Yoav Rotman, Matthew Nixon, Michael Line, Michael Radica, Luis Welbanks   +5 more
core  

Far-ultraviolet Flares and Variability of the Young M Dwarf AU Mic: A Nondetection of Planet C in Transit at Lyα

The Astronomical Journal
Atmospheric escape’s potential to shape the exoplanet population motivates detailed observations of systems actively undergoing escape. AU Mic is a young and active M dwarf hosting two close-in transiting sub- to Neptune-sized planets. Atmospheric escape
Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood, Girish M. Duvvuri, Emily A. Gilbert, Peter Plavchan, Peter Gao, Hans-R. Müller, Adina D. Feinstein, Thomas Barclay, Eric D. Lopez   +10 more
doaj   +1 more source

Variable X-Ray Flux May Explain Variable Helium Escape from the Habitable-zone Exoplanet LHS 1140b

The Astrophysical Journal Letters
A central goal in exoplanet science is to understand the conditions under which potentially habitable worlds retain atmospheres. This question is of special interest for worlds orbiting M stars, whose habitable-zone planets are more readily observable ...
Collin Cherubim, Tim Cunningham, Jason A. Dittmann   +2 more
doaj   +1 more source

The single beacon: progresses in understanding Earth as an exoplanet using DSCOVR/EPIC observations

Frontiers in Remote Sensing
Almost 6000 exoplanets have thus far been confirmed, revolutionizing our understanding of planetary habitability. Yet, despite the identification of Earth-like exoplanets, definitive evidence of extraterrestrial life remains elusive.
Xun Jian, Xun Jian, Lixiang Gu, Siteng Fan, Stuart J. Bartlett, Jiani Yang, Jonathan H. Jiang, Yangcheng Luo, Yuk L. Yung, Yuk L. Yung   +9 more
doaj   +1 more source

Planetary Rhythms: Synchronous Circulation on Variably Irradiated Asynchronous Planets

The Astrophysical Journal
Tidal locking of planets to their host stars results in an atmospheric circulation with a hotspot fixed to the frame of reference of the planet. On the other hand, asynchronously rotating planets feature moving hotspots either lagging or leading the ...
Deepayan Banik
doaj   +1 more source

Mapping exoplanet clouds and albedo from phase curves and spectra

, 2017
Thesis: Ph. D. in Planetary Science, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2017.Cataloged from PDF version of thesis.Includes bibliographical references (pages 89-91).This thesis uses planetary ...
Webber, Matthew (Matthew William)
core  

Detecting Atmospheric CO2 Trends as Population-level Signatures for Long-term Stable Water Oceans and Biotic Activity on Temperate Terrestrial Exoplanets

The Astrophysical Journal
Identifying key observables is essential for enhancing our knowledge of exoplanet habitability and biospheres, as well as improving future mission capabilities.
Janina Hansen, Daniel Angerhausen, Sascha P. Quanz, Derek Vance, Björn S. Konrad, Emily O. Garvin, Eleonora Alei, Jens Kammerer, Felix A. Dannert   +8 more
doaj   +1 more source

NASA’s Pandora SmallSat Mission: Simulated Modeling and Retrieval of Near-infrared Exoplanet Transmission Spectra

The Astronomical Journal
Pandora is a SmallSat mission dedicated to understanding exoplanets and their host stars by disentangling the impact of stellar heterogeneity on exoplanet transmission spectra.
Yoav Rotman, Peter McGill, Luis Welbanks, Benjamin V. Rackham, Aishwarya Iyer, Dániel Apai, Michael R. Line, Elisa V. Quintana, Jessie L. Dotson, Knicole D. Colón, Thomas Barclay, Christina Hedges, Jason F. Rowe, Emily A. Gilbert, Brett M. Morris, Jessie L. Christiansen, Trevor O. Foote, Aylin García Soto, Thomas P. Greene, Kelsey Hoffman, Benjamin J. Hord, Aurora Y. Kesseli, Veselin B. Kostov, Megan Weiner Mansfield, Lindsey S. Wiser   +24 more
doaj   +1 more source