Results 21 to 30 of about 68,799 (245)

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-contrast Imaging of the Exoplanet HIP 65426 b from 2 to 16 μm [PDF]

open access: yesAstrophysical Journal Letters, 2022
We present JWST Early Release Science coronagraphic observations of the super-Jupiter exoplanet, HIP 65426b, with the Near-Infrared Camera (NIRCam) from 2 to 5 μm, and with the Mid-Infrared Instrument (MIRI) from 11 to 16 μm.
A. Carter   +108 more
semanticscholar   +1 more source

Exoplanet Statistics and Theoretical Implications [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2021
In the past few years, significant advances have been made in understanding the distributions of exoplanet populations and the architecture of planetary systems.
Wei Zhu, S. Dong
semanticscholar   +1 more source

Large Interferometer For Exoplanets (LIFE). I. Improved exoplanet detection yield estimates for a large mid-infrared space-interferometer mission [PDF]

open access: yesAstronomy & Astrophysics, 2021
One of the long-term goals of exoplanet science is the atmospheric characterization of dozens of small exoplanets in order to understand their diversity and search for habitable worlds and potential biosignatures.
L. Collaboration   +67 more
semanticscholar   +1 more source

Five Key Exoplanet Questions Answered via the Analysis of 25 Hot-Jupiter Atmospheres in Eclipse [PDF]

open access: yesAstrophysical Journal Supplement Series, 2022
Population studies of exoplanets are key to unlocking their statistical properties. So far, the inferred properties have been mostly limited to planetary, orbital, and stellar parameters extracted from, e.g., Kepler, radial velocity, and Gaia data.
Q. Changeat   +13 more
semanticscholar   +1 more source

The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope. IV. Capabilities and predicted performance for exoplanet characterization [PDF]

open access: yesAstronomy & Astrophysics, 2022
The Near-Inrared Spectrograph (NIRSpec) on the James Webb Space Telescope (JWST) is a very versatile instrument, offering multiobject and integral field spectroscopy with varying spectral resolution ($\sim$30 to $\sim$3000) over a wide wavelength range ...
S. Birkmann   +33 more
semanticscholar   +1 more source

The case and context for atmospheric methane as an exoplanet biosignature [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2022
Significance Astronomers will soon begin searching for biosignatures, atmospheric gases or surface features produced by life, on potentially habitable planets.
M. Thompson   +4 more
semanticscholar   +1 more source

Large Interferometer For Exoplanets (LIFE). II. Signal simulation, signal extraction, and fundamental exoplanet parameters from single-epoch observations [PDF]

open access: yesAstronomy & Astrophysics, 2022
The Large Interferometer For Exoplanets (LIFE) initiative is developing the science and a technology roadmap for an ambitious space mission featuring a space-based mid-infrared (MIR) nulling interferometer in order to detect the thermal emission of ...
F. Dannert   +15 more
semanticscholar   +1 more source

Plausible Constraints on the Range of Bulk Terrestrial Exoplanet Compositions in the Solar Neighborhood [PDF]

open access: yesAstrophysical Journal, 2022
Rocky planet compositions regulate planetary evolution by affecting core sizes, mantle properties, and melting behaviors. Yet, quantitative treatments of this aspect of exoplanet studies remain generally underexplored.
R. Spaargaren   +4 more
semanticscholar   +1 more source

Revisiting the Planet Mass and Stellar Metallicity Relation for Low-Mass Exoplanets Orbiting GKM Class Stars

open access: yesUniverse, 2021
The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang   +4 more
doaj   +1 more source

Nightside condensation of iron in an ultra-hot giant exoplanet [PDF]

open access: yesNature, 2020
Ultrahot giant exoplanets receive thousands of times Earth’s insolation 1 , 2 . Their high-temperature atmospheres (greater than 2,000 kelvin) are ideal laboratories for studying extreme planetary climates and chemistry 3 – 5 .
D. Ehrenreich   +96 more
semanticscholar   +1 more source

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