Results 61 to 70 of about 708 (150)

Spin-Orbit Alignment for the Eccentric Exoplanet HD 147506b [PDF]

open access: yes, 2007
The short-period exoplanet HD 147506b (also known as HAT-P-2b) has an eccentric orbit, raising the possibility that it migrated through planet-planet scattering or Kozai oscillations accompanied by tidal dissipation.
Winn, Joshua N.   +9 more
core  

Lithium abundances in exoplanet-host stars: modelling

open access: yes, 2008
International audienceAims. Exoplanet host stars (EHS) are known to present superficial chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on average, overmetallic compared to the Sun.
Vauclair, S.   +7 more
core   +1 more source

Infrared Observations of Exoplanet Atmospheres [PDF]

open access: yes, 2012
The study of extrasolar planet atmospheres elucidates the formation and migration history of planets and places the origin and evolution of Earth and the Solar System in a broader context.
Crossfield, Ian James Mills
core  

The exoplanet revolution: towards habitable worlds

open access: yes, 2023
In the nearly 30 years since the discovery of the first exoplanets, planet detection has continued to accelerate, driven in large part by the space-based transit missions Kepler/K2 and TESS; there are now more than 5000 confirmed exoplanets.
Smith, Alexis M S
core  

Exoplanet Demographics Beyond Kepler: Giant Planets with Radial Velocity & Young Transiting Planets with TESS

open access: yes, 2023
Large scale exoplanet detection and characterization surveys have made it possible for us to study exoplanets from a demographic perspective. Of specific importance is the \kepler mission, which has provided detailed exoplanet population statistics for a
Fernandes, Rachel Belinda
core  

Planetary Migration in Protoplanetary Disks [PDF]

open access: yes, 2018
The known exoplanet population displays a great diversity of orbital architectures, and explaining the origin of this is a major challenge for planet formation theories.
NELSON, RP, Richard P. Nelson
core   +1 more source

Outward Migration of Low-Mass Planets: A Key to Observed Exoplanet Demographics

open access: yes
The rapidly expanding catalog of exoplanets reveals a striking diversity in planetary system architectures, characterized by the prevalence of super-Earths and mini-Neptunes, and distinctive features such as the "radius valley." While inward migration has long been established as a dominant process, particularly for hot Jupiters, the role of outward ...
Revista, Zen, ASTRO, 10
openaire   +1 more source

Searching for Snapshots of Giant Exoplanet Migration

open access: yes
NEID, an extreme precision Doppler spectrograph on the WIYN 3.5-meter Telescope at Kitt Peak National Observatory (a partnership between Indiana University, University of Wisconsin-Madison, Pennsylvania State University, Princeton University,Purdue University, NSF’s NOIRLab, and NASA), is helping unravel the origin of hot Jupiters.
openaire   +3 more sources

Ground-based observations of exoplanet atmospheres

open access: yes, 2011
This thesis focuses on the properties of exoplanet atmospheres. The results for ground-based near-infrared secondary eclipse observations of three different exoplanets, TrES-3b, HAT-P-1b and WASP-33b, are presented which have been obtained with ground ...
Mooij, E.J.W. de
core  

A multiplicity study of transiting exoplanet host stars

open access: yes, 2020
Context. Many main-sequence stars are part of multiple systems. The effect of stellar multiplicity on planet formation and migration, however, is poorly understood. Aims.
Kenworthy, M.A.   +11 more
core   +1 more source

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