Results 11 to 20 of about 137,337 (258)

The Fourier-Kelvin Stellar Interferometer: a low-complexity low-cost space mission for high-resolution astronomy and direct exoplanet detection [PDF]

open access: greenSPIE Proceedings, 2006
The Fourier-Kelvin Stellar Interferometer (FKSI) is a mission concept for a spacecraft-borne nulling interferometer for high-resolution astronomy and the direct detection of exoplanets and assay of their environments and atmospheres. FKSI is a high angular resolution system operating in the near to midinfrared spectral region and is a scientific and ...
Richard Barry   +15 more
openalex   +6 more sources

Astronomy: A Mars-sized exoplanet

open access: yesNature, 2015
Analysis of Kepler data has yielded the smallest known mass for an exoplanet orbiting a normal star. Its mass and size are similar to those of Mars, setting a benchmark for the properties of exoplanets smaller than Earth. See Letter p.321 Kepler-138, a red dwarf in the constellation of Lyra, hosts ...
G. Laughlin
semanticscholar   +4 more sources

Astronomy First direct detection of an exoplanet by optical interferometry Astrometry and K -band spectroscopy of HR 8799 e [PDF]

open access: hybridAstronomy & Astrophysics, 2019
Aims. To date, infrared interferometry at best achieved contrast ratios of a few times 10−4 on bright targets. GRAVITY, with its dual-field mode, is now capable of high contrast observations, enabling the direct observation of exoplanets. We demonstrate the technique on HR 8799, a young planetary system composed of four known giant exoplanets. Methods.
S. Lacour   +87 more
openalex   +10 more sources

Astronomy from the moon in the next decades: from exoplanets to cosmology in visible light and beyond [PDF]

open access: greenPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
We look at what astronomy from the Moon might be like over the next few decades. The Moon offers the possibility of installing large telescopes or interferometers with instruments larger than those on orbiting telescopes. We first present examples of ambitious science cases, in particular ideas that cannot be implemented from Earth.
Jean Schneider, P. Kervella, A. Labeyrie
openalex   +4 more sources

Visualising Astronomy: Visualising Exoplanet Data

open access: closed, 2011
A discussion of visualising exoplanetary data.
R. Wyatt
openalex   +3 more sources

Visualising Astronomy: Visualising Exoplanets

open access: closed, 2012
A discussion of exoplanetary visualisations using art.
R. Wyatt
openalex   +2 more sources

SPHERE: the exoplanet imager for the Very Large Telescope [PDF]

open access: yesAstronomy & Astrophysics, 2019
Observations of circumstellar environments that look for the direct signal of exoplanets and the scattered light from disks have significant instrumental implications.
J. Beuzit   +20 more
semanticscholar   +6 more sources

Optical properties of organic haze analogues in water-rich exoplanet atmospheres observable with JWST [PDF]

open access: yesNature Astronomy, 2023
JWST has begun its scientific mission, which includes the atmospheric characterization of transiting exoplanets. Some of the first exoplanets to be observed by JWST have equilibrium temperatures below 1000 K, which is a regime where photochemical hazes ...
Chao He   +11 more
semanticscholar   +1 more source

Large Interferometer For Exoplanets (LIFE). IX. Assessing the impact of clouds on atmospheric retrievals at mid-infrared wavelengths with a Venus-twin exoplanet [PDF]

open access: yesAstronomy & Astrophysics, 2023
The Large Interferometer For Exoplanets (LIFE) initiative aims to develop a space based mid-infrared (MIR) nulling interferometer to measure the thermal emission spectra of temperate terrestrial exoplanets. We investigate how well LIFE could characterize
B. Konrad   +12 more
semanticscholar   +1 more source

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