Results 101 to 110 of about 50,289 (239)

L'ADIEU AU RÉFÉRENT [PDF]

open access: yesDiversitate si Identitate Culturala in Europa, 2016
Exoplanets, discovered by Mayor and Queloz, have changed our definition of the word planet. Nowadays, nobody can defin precisely this term. Study this exemple shows that the referential sense is neither in words, nor in the head, but in a linguistic use,
François GAUDIN
doaj  

DYNAMIC EVOLUTION EXOPLANET SYSTEMS, MOVING IN ORBITAL RESONANCES WITH THE ACCOUNT OF SECULAR PERTURBATION FROM N BODIES

open access: yesOdessa Astronomical Publications, 2017
Equations of exoplanet's motion connected with orbital Lindblad resonances with the account of secular terms caused by gravitational non-resonant perturbation are derived. Qualitative researches of orbital evolution modeling exoplanet systems are carried
B. R. Mushailov, A. K. Chuyas
doaj   +1 more source

Exoplanet Research with the Stratospheric Observatory for Infrared Astronomy (SOFIA)

open access: yes, 2017
When the Stratospheric Observatory for Infrared Astronomy (SOFIA) was conceived and its first science cases defined, exoplanets had not been detected. Later studies, however, showed that optical and near-infrared photometric and spectrophotometric follow-
B Placek   +19 more
core   +1 more source

The Future of Exoplanet Direct Detection [PDF]

open access: yesarXiv, 2019
Diffraction fundamentally limits our ability to image and characterize exoplanets. Current and planned coronagraphic searches for exoplanets are making incredible strides but are fundamentally limited by the inner working angle of a few lambda/D.
arxiv  

Characterizing Exoplanet Habitability [PDF]

open access: yes, 2017
A habitable exoplanet is a world that can maintain stable liquid water on its surface. Techniques and approaches to characterizing such worlds are essential, as performing a census of Earth-like planets that may or may not have life will inform our understanding of how frequently life originates and is sustained on worlds other than our own ...
openaire   +3 more sources

Microlensing Searches for Exoplanets [PDF]

open access: yesGeosciences, 2018
Gravitational microlensing finds planets through their gravitational influence on the light coming from a more distant background star. The presence of the planet is then inferred from the tell-tale brightness variations of the background star during the lensing event, even if no light is detectable from the planet or the host foreground star.
openaire   +4 more sources

A Quantitative Comparison of Exoplanet Catalogs

open access: yesGeosciences, 2018
In this study, we investigated the differences between four commonly-used exoplanet catalogs (exoplanet.eu; exoplanetarchive.ipac.caltech.edu; openexoplanetcatalogue.com; exoplanets.org) using a Kolmogorov–Smirnov (KS) test.
Dolev Bashi, Ravit Helled, Shay Zucker
doaj   +1 more source

Atmospheric Retrieval of Exoplanets [PDF]

open access: yes, 2018
30 pages, 3 figures, Published in Springer Handbook of ...
openaire   +3 more sources

EXONEST: The Bayesian Exoplanetary Explorer

open access: yesEntropy, 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.
Kevin H. Knuth   +6 more
doaj   +1 more source

Evidence for enhanced chromospheric Ca II H & K emission in stars with close-in extrasolar planets [PDF]

open access: yes, 2012
The planet-star interaction is manifested in many ways. It was found out that a close-in exoplanet causes small but measurable variability in the cores of a few lines in the spectra of several stars which corresponds to the orbital period of the exoplanet. Stars with and without exoplanets may have different properties. The main goal of our study is to
arxiv   +1 more source

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