Results 61 to 70 of about 299,348 (228)
, 2013 We explore the relations between physical and orbital properties of planets and properties of their host stars to identify the main observable signatures of the formation and evolution processes of planetary systems.
Adibekyan, V. Zh. +9 more
core +2 more sources
Halting Planet Migration in the Evacuated Centers of Protoplanetary Disks [PDF]
, 2002 Precise Doppler searches for extrasolar planets find a surfeit of planets with orbital periods of 3-4 days, and no planets with orbital periods less than 3 days.
Lynden-Bell D. +4 more
core +2 more sources
Proceedings of the National Academy of Sciences, 2000 The first known extrasolar planet in orbit around a Sun-like star was discovered in 1995. This object, as well as over two dozen subsequently detected extrasolar planets, were all identified by observing periodic variations of the Doppler shift of light emitted by the stars to which they are bound.
Geoffrey W. Marcy +2 more
openaire +3 more sources
Planet Formation and Disk-Planet Interactions [PDF]
, 2019 This review is based on lectures given at the 45th Saas-Fee Advanced Course 'From Protoplanetary Disks to Planet Formation' held in March 2015 in Les Diablerets, Switzerland. Starting with an overview of the main characterictics of the Solar System and extrasolar planets, we describe the planet formation process in terms of the sequential accretion ...
openaire +3 more sources
Joint Inversion of Receiver Functions and Apparent Incidence Angles for Sparse Seismic Data
Earth and Space Science, 2021 The estimation of crustal structure and thickness is essential in understanding the formation and evolution of terrestrial planets. Initial planetary missions with seismic instrumentation on board face the additional challenge of dealing with seismic ...
Rakshit Joshi +4 more
doaj +1 more source
Formation and Structure of Low Density Exo-Neptunes
, 2011 Kepler has found hundreds of Neptune-size (2-6 R_Earth) planet candidates within 0.5 AU of their stars. The nature of the vast majority of these planets is not known because their masses have not been measured.
Borucki +31 more
core +1 more source
Planet–planet scattering in circumstellar gas disks [PDF]
Astronomy and Astrophysics, 2010 Astronomy and Astrophysics Letters, in ...
MARZARI, FRANCESCO +2 more
openaire +3 more sources
, 2008 We have investigated the formation of close-in extrasolar giant planets through a coupling effect of mutual scattering, Kozai mechanism, and tidal circularization, by orbital integrations.
Ito T. +4 more
core +1 more source
The PLANET Collaboration [PDF]
Symposium - International Astronomical Union, 1996 A newly-formed microlensing monitoring network, the PLANET collaboration, is briefly described.
Michael D. Albrow +11 more
openaire +2 more sources
The effects of fly-bys on planetary systems [PDF]
, 2010 Most of the observed extrasolar planets are found on tight and often eccentric orbits. The high eccentricities are not easily explained by planet-formation models, which predict that planets should be on rather circular orbits.
Aarseth +63 more
core +1 more source