Results 71 to 80 of about 15,445 (215)

petitRADTRANS: a Python radiative transfer package for exoplanet characterization and retrieval

, 2019
We present the easy-to-use, publicly available, Python package petitRADTRANS, built for the spectral characterization of exoplanet atmospheres. The code is fast, accurate, and versatile; it can calculate both transmission and emission spectra within a ...
Henning, Th., Molaverdikhani, K., Mollière, P., Snellen, I. A. G., van Boekel, R., Wardenier, J. P.   +5 more
core   +1 more source

Mapping Exoplanets

, 2020
The varied surfaces and atmospheres of planets make them interesting places to live, explore, and study from afar. Unfortunately, the great distance to exoplanets makes it impossible to resolve their disk with current or near-term technology. It is still
A Shporer, AP Showman, B Drummond, BJ Foley, BJ Foley, BJ Foley, BO Demory, C Beichman, C Dorn, C Majeau, C Marois, D Angerhausen, D Apai, D Charbonneau, D Deming, D Höning, D Keating, D Keating, D Sudarsky, D Veras, DJ Armstrong, DM Williams, DS Abbot, E Agol, E Buenzli, E Gaidos, E Pallé, E Rauscher, E Rauscher, EMR Kempton, H Kawahara, H Kawahara, H Kawahara, H Kawahara, HA Knutson, HA Knutson, HM Haggard, HN Russell, I Dobbs-Dixon, I Dobbs-Dixon, I Dobbs-Dixon, I Gómez-Leal, IAG Snellen, IJM Crossfield, J de Wit, J Lustig-Yaeger, JC Schwartz, JC Schwartz, JH Jiang, K Heng, K Mandel, KB Stevenson, L Dang, L Rossi, LJ Esteves, LJ Esteves, M Aizawa, M Brogi, M Roman, MAS McTier, MF Sterzik, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NK Lewis, PGJ Irwin, PHH Oakley, PKG Williams, R Luger, R Luger, S Fan, T Karalidi, T Louden, T Louden, TD Robinson, TD Robinson, TD Robinson, TG Beatty, TJ Bell, V Kostov, V Parmentier, Y Fujii, Y Fujii, Y Fujii, YK Feng   +91 more
core   +1 more source

High Pressure Formation of the Eight‐Fold Coordinated Post‐Post Spinel MgFe2O4

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract MgFe2O4 was probed to 74(1) GPa and 2,840(130) K as a low‐pressure analog to post‐post spinel Mg2SiO4 predicted in super‐Earths using synchrotron multigrain X‐ray diffraction techniques in the laser‐heated diamond anvil cell. With high‐temperatures above 65 GPa the eight‐fold coordinated δ‐MgFe2O4 (Th3P4‐type) is stable with Mg and Fe ...
Claire C. Zurkowski, Jing Yang, Stella Chariton, Vitali Prakapenka, Yingwei Fei   +4 more
wiley   +1 more source

Extracting starspot structures from exoplanet transit photometry

Astronomy & Astrophysics
Context . Future space-based transit photometry can provide empirical comparisons of solar and stellar spot structures with high precision. Spot transit mapping provides a way to directly observe and characterize the location, size, intensity, and evolution of starspots to infer stellar rotation rates and ...
S. M. Zaleski, A. Valio, B. Carter
openaire   +1 more source

Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy [PDF]

Science, 2014
Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such extreme stellar forcing.
Stevenson, K. B., Desert, J.-M., Line, Michael R., Bean, J. L., Fortney, Jonathan J., Showman, A. P., Kataria, T., Kreidberg, Laura, McCullough, Peter R., Henry, Gregory W., Charbonneau, D., Burrows, A., Madhusudhan, Nikku, Williamson, M. H., Homeier, Derek, Seager, Sara   +15 more
openaire   +4 more sources

Most Super-Earths Have Less Than 3% Water

The Astrophysical Journal
Super-Earths are highly irradiated, small planets with bulk densities approximately consistent with Earth. We construct combined interior atmosphere models of super-Earths that trace the partitioning of water throughout a planet, including an iron-rich ...
James G. Rogers, Caroline Dorn, Vivasvaan Aditya Raj, Hilke E. Schlichting, Edward D. Young   +4 more
doaj   +1 more source

Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3-D stellar atmospheres

, 2017
CONTEXT: High-precision stellar analyses require hydrodynamic modeling to interpret chemical abundances or oscillation modes. Exoplanet atmosphere studies require stellar background spectra to be known along the transit path while detection of Earth ...
Dahlén, Erik, Dravins, Dainis, Ludwig, Hans-Günter, Pazira, Hiva   +3 more
core   +2 more sources

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, Volume 14, Issue 5, 2 February 2026.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Characterizing Exoplanets for Assessing Their Potential Habitability

The Astrophysical Journal
The Statistical-likelihood Exoplanetary Habitability Index (SEPHI) serves as a valuable tool for prioritizing targets for further study and identifying potentially habitable environments.
J. M. Rodríguez-Mozos, A. Moya
doaj   +1 more source

A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres

, 2009
We present a new method to retrieve molecular abundances and temperature profiles from exoplanet atmosphere photometry and spectroscopy. We run millions of 1D atmosphere models in order to cover the large range of allowed parameter space, and present ...
Madhusudhan, N., Seager, S.
core   +1 more source