Results 11 to 20 of about 6,508 (165)

Variability of Known Exoplanet Host Stars Observed by TESS

The Astronomical Journal, 2023
Both direct and indirect methods of exoplanet detection rely upon detailed knowledge of the potential host stars. Such stellar characterization allows for accurate extraction of planetary properties, as well as contributing to our overall understanding ...
Emilie R. Simpson, Tara Fetherolf, Stephen R. Kane, Joshua Pepper, Teo Močnik, Paul A. Dalba   +5 more
doaj   +1 more source

General Circulation Model Constraints on the Detectability of the CO2-CH4 Biosignature Pair on TRAPPIST-1e with JWST

The Astrophysical Journal Letters, 2022
Terrestrial exoplanets such as TRAPPIST-1e will be observed in a new capacity with the JWST/Near Infrared Spectrograph (NIRSpec), which is expected to be able to detect CO _2 , CH _4 , and O _2 signals, if present, with multiple coadded transit ...
Yoav Rotman, Thaddeus D. Komacek, Geronimo L. Villanueva, Thomas J. Fauchez, Erin M. May   +4 more
doaj   +1 more source

The Ultraviolet Radiation Environment Around M dwarf Exoplanet Host Stars [PDF]

, 2012
The spectral and temporal behavior of exoplanet host stars is a critical input to models of the chemistry and evolution of planetary atmospheres. At present, little observational or theoretical basis exists for understanding the ultraviolet spectra of M ...
Bushinsky, Rachel, Desert, Jean-Michel, France, Kevin, Froning, Cynthia S., Linsky, Jeffrey L., Mauas, Pablo, Roberge, Aki, Stocke, John T., Tian, Feng, Vieytes, Mariela, Walkowicz, Lucianne M.   +10 more
core   +4 more sources

Earth as an Exoplanet: Investigating Earth's Time Variable Thermal Emission and its Atmospheric Seasonality using Disk-Integrated Satellite Observations

, 2022
AASTCS 9: Exoplanets IV ...
Mettler, Jean-Noël, Quanz, Sascha Patrick, Helled, Ravit   +2 more
openaire   +3 more sources

Magnetohydrodynamical Torsional Oscillations from Thermoresistive Instability in Hot Jupiters

The Astrophysical Journal, 2023
Hot Jupiter atmospheres may be subject to a thermoresistive instability where an increase in the electrical conductivity due to ohmic heating results in runaway of the atmospheric temperature.
Raphaël Hardy, Paul Charbonneau, Andrew Cumming   +2 more
doaj   +1 more source

Emergent Exoplanet Flux: Review of the Spitzer Results [PDF]

, 2008
Observations using the Spitzer Space Telescope provided the first detections of photons from extrasolar planets. Spitzer observations are allowing us to infer the temperature structure, composition, and dynamics of exoplanet atmospheres.
Bouchy, Charbonneau, Demory, Drake Deming, Gillon, Morales-Calderon, Showman   +6 more
core   +1 more source

Evolutionary and functional relationships between plant and microbial C₁ metabolism in terrestrial ecosystems. [PDF]

New Phytol
Summary One‐carbon (C1) metabolism, centered on the universal methyl donor S‐adenosyl methionine (SAM), plays critical roles in biosynthesis, redox regulation, and stress responses across plants and microbes. A recently proposed photosynthetic C1 pathway links SAM methyl groups directly to RuBisCO‐mediated CO2 assimilation and integrates with nitrogen ...
Jardine KJ, Honeker LK, Zhang Z, Kwatcho Kengdo S, Yang Y, Roscioli J, Riley WJ.   +6 more
europepmc   +2 more sources

SPECULOOS exoplanet search and its prototype on TRAPPIST [PDF]

, 2017
One of the most significant goals of modern science is establishing whether life exists around other suns. The most direct path towards its achievement is the detection and atmospheric characterization of terrestrial exoplanets with potentially habitable
A Burrows, A Collier Cameron, A Wolszczan, Adam J. Burgasser, AR Belu, B Goldman, C Hayashi, C Terquem, CH Blake, CP Johnstone, D Deming, D Kubas, E Agol, E Berger, E Bolmont, E Bolmont, E Jehin, EE Mamajek, ET Whelan, Eunkyu Han, GÁ Bakos, IN Reid, IN Reid, J Leconte, J Muzerolle, J Wit de, J Wit de, J. Schneider, JCB Papaloizou, JD Kirkpatrick, JD Kirkpatrick, JE Gizis, JE Owen, JE Owen, JK Barstow, JN Winn, JS Pineda, KL Luhman, KL Luhman, KL Luhman, L Kaltenegger, L Ricci, L Zeng, M Gillon, M Gillon, M Gillon, M Gillon, M Jura, M Mayor, MC Cushing, MJ Holman, MJ Payne, MY He, P Cresswell, P. Figueira, Philip S. Muirhead, PJ Wheatley, PS Muirhead, R Klein, R Luger, R Luger, R Montgomery, RK Kopparapu, RL Akeson, S Ballard, S Jin, S Seager, S Seager, Sergio B. Dieterich, SJ Schmidt, SN Raymond, SS Kumar, SS Kumar, Stanimir A. Metchev, V Bourrier, X Bonfils, Y Alibert, Y Shvartzvald, ZK Berta   +78 more
core   +1 more source

EXONEST: The Bayesian Exoplanetary Explorer [PDF]

, 2017
The fields of astronomy and astrophysics are currently engaged in an unprecedented era of discovery as recent missions have revealed thousands of exoplanets orbiting other stars.
Angerhausen, Daniel, Carado, Bertrand, Carter, Jennifer L., D'Angelo, Bryan, Gai, Anthony D., Knuth, Kevin H., Placek, Ben   +6 more
core   +4 more sources

Non-detection of L-band Line Emission from the Exoplanet HD189733b [PDF]

, 2010
We attempt to confirm bright non-local thermodynamic equilibrium (non-LTE) emission from the exoplanet HD 189733b at 3.25 μm, as recently reported by Swain et al. based on observations at low spectral resolving power (λ/δλ ≈ 30).
Blake, Geoffrey A., Deming, L. Drake, Knutson, Heather A., Mandell, Avi M., Mumma, Michael J., Salyk, Colette, Villanueva, Geronimo L.   +6 more
core   +2 more sources