Results 91 to 100 of about 71,492 (285)

The Eccentricity-Mass Distribution of Exoplanets: Signatures of Different Formation Mechanisms? [PDF]

open access: yes, 2006
We examine the distributions of eccentricity and host star metallicity of exoplanets as a function of their mass. Planets with M sin i >~ 4 M_J have an eccentricity distribution consistent with that of binary stars, while planets with M sin i
Abt   +45 more
core   +2 more sources

Shaping of Planetary Nebulae by Exoplanets

open access: yesGalaxies, 2020
(1) Background: We investigate the hypothesis that exoplanet engulfment can help explain the observed non-spherical planetary nebula population, as a complementary shaping mechanism to the binary hypothesis.
Nicola Keaveney   +2 more
doaj   +1 more source

Exoplanet Atmospheres [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2010
At the dawn of the first discovery of exoplanets orbiting Sun-like stars in the mid-1990s, few believed that observations of exoplanet atmospheres would ever be possible. After the 2002 Hubble Space Telescope detection of a transiting exoplanet atmosphere, many skeptics discounted it as a one-object, one-method success.
Seager, Sara, Deming, Drake
openaire   +3 more sources

Habitability of Super-Earths: Gliese 581c and 581d

open access: yes, 2008
The unexpected diversity of exoplanets includes a growing number of super-Earth planets, i.e., exoplanets with masses smaller than 10 Earth masses. Unlike the larger exoplanets previously found, these smaller planets are more likely to have a similar ...
C. Bounama   +5 more
core   +1 more source

Maximum Angular Separation Epochs for Exoplanet Imaging Observations [PDF]

open access: yes, 2018
Direct imaging of exoplanets presents both significant challenges and significant gains. The advantages primarily lie in receiving emitted and, with future instruments, reflected photons at phase angles not accessible by other techniques, enabling the ...
Kane, Stephen R.   +2 more
core   +3 more sources

A Synergic Strategy to Characterize the Habitability Conditions of Exoplanets Hosted by Solar-Type Stars

open access: yesFrontiers in Astronomy and Space Sciences, 2022
We present a new synergic strategy that merges the potential of asteroseismology with solar space weather/climate techniques in order to characterize solar-like stars and their interaction with hosted exoplanets. The method is based on the use of seismic
Raffaele Reda   +8 more
doaj   +1 more source

H2O abundances and cloud properties in ten hot giant exoplanets [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Transmission spectroscopy of exoplanets has the potential to provide precise measurements of atmospheric chemical abundances, in particular of hot Jupiters whose large sizes and high temperatures make them conducive to such observations. To date, several
Arazi Pinhas   +3 more
semanticscholar   +1 more source

Global Mapping of Earth-like Exoplanets from Scattered Light Curves

open access: yes, 2010
Scattered lights from terrestrial exoplanets provide valuable information about the planetary surface. Applying the surface reconstruction method proposed by Fujii et al.
Charbonneau   +21 more
core   +1 more source

Imaging low-mass planets within the habitable zone of α Centauri

open access: yesNature Communications, 2021
Imaging of low-mass exoplanets can be achieved once the thermal background in the mid-infrared (MIR) wavelengths can be mitigated. Here, the authors present a ground-based MIR observing approach enabling imaging low-mass temperate exoplanets around ...
K. Wagner   +41 more
doaj   +1 more source

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou   +13 more
wiley   +1 more source

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