Results 11 to 20 of about 708 (150)

Orbital misalignment of the GJ 436b exoplanet. Constraints on the Kozai migration scenario

, 2018
Kozai-Lidov mechanism is a major source of dynamical evolution in multiple stellar systems and in young planetary systems with large mutual inclinations.
Vincent Bourrier, David Ehrenreich (5572829), Hervé Beust, Hervé Beust (5572820), Vincent Bourrier (5572823), Christophe Lovis (5572826), David Ehrenreich, Christophe Lovis   +7 more
core   +2 more sources

Signatures of Atmospheric Mass Loss and Planet Migration in the Time Evolution of Short-period Transiting Exoplanets

The Astronomical Journal
Comparative studies of young and old exoplanet populations offer a glimpse into how planets may form and evolve with time. We present an occurrence rate study of short-period (
Rachel B. Fernandes, Galen J. Bergsten, Gijs D. Mulders, Ilaria Pascucci, Kevin K. Hardegree-Ullman, Steven Giacalone, Jessie L. Christiansen, James G. Rogers, Akash Gupta, Rebekah I. Dawson, Tommi T. Koskinen, Kiersten M. Boley, Jason L. Curtis, Katia Cunha, Eric E. Mamajek, Sabina Sagynbayeva, Sakhee S. Bhure, David R. Ciardi, Preethi R. Karpoor, Kyle A. Pearson, Jon K. Zink, Gregory A. Feiden   +21 more
core   +5 more sources

Orbital migration and the period distribution of exoplanets [PDF]

Astronomy & Astrophysics, 2005
published in A& ...
DEL POPOLO A, ERCAN N, YE, ILYURT IS.
openaire   +5 more sources

Statistical properties of exoplanets [PDF]

Astronomy & Astrophysics, 2003
Accepted in A& ...
Udry, S., Mayor, M., Santos, N. C.
openaire   +2 more sources

PROTOSTELLAR CLOUD FRAGMENTATION AND INWARD MIGRATION BY DISK CAPTURE AS THE ORIGIN OF MASSIVE EXOPLANETS [PDF]

The Astrophysical Journal, 2009
A new model for the formation of Jovian planets is proposed. We consider planets forming at large distances from a protostar (>100 AU) through direct fragmentation of a gas cloud, by the same formation mechanism as wide stellar and brown dwarf binaries. We model the gravitational evolution of a system of these distant planets and a second population
Font-Ribera, A., Miralda-Escudé, J., Ribas, I.   +2 more
openaire   +2 more sources

How many suns are in the sky? A SPHERE multiplicity survey of exoplanet host stars [PDF]

, 2021
Aims. We are studying the influence of stellar multiplicity on exoplanet systems and, in particular, systems that have been detected via radial-velocity searches.
R. G. van Holstein, Mugrauer, M., Van Holstein, R. G., C. Ginski, Ginski, C., M. Mugrauer, C. Adam, N. Vogt, Holstein, R.G. van, Adam, C., Vogt, N., van Holstein, R.G.   +11 more
core   +1 more source

Nuclear Processes in Dark Interstellar Matter of H(0) Decrease the Hope of Migrating to Exoplanets [PDF]

Space: Science & Technology, 2021
It is still generally assumed that interstellar travel will be possible after purely technical development and thus that mankind can move to some suitable exoplanet when needed. However, recent research indicates this not to be the case, since interstellar space is filled with enough ultradense hydrogen H(0) as stable condensed dark matter (Holmlid ...
openaire   +2 more sources

Oblique rings from migrating exomoons: A possible origin for long-period exoplanets with enlarged radii

Astronomy & Astrophysics, 2023
Context. The extremely low density of several long-period exoplanets in mature systems is still unexplained - with HIP 41378 f being archetypical of this category. It has been proposed that such planets could actually have normal densities but be surrounded by a ring observed approximately face on, mimicking the transit depth of a puffy planet.
Saillenfest, Melaine, Sulis, Sophia, Charpentier, Paul, Santerne, Alexandre   +3 more
openaire   +3 more sources

Exoplanet weather and climate regimes with clouds and thermal ionospheres

, 2022
Context. Gaseous exoplanets are the targets that enable us to explore fundamentally our understanding of planetary physics and chemistry. With observational efforts moving from the discovery into the characterisation mode, systematic campaigns that cover
Robin Baeyens, Lewis, D., Woitke, P., Woitke, Peter, Calder, Robb, Baeyens, Robin, Ludmila Carone, Herbort, Oliver, Carone, L., Dominic Samra, Lewis, David, Chubb, K., Hirst, G., Georgina Hirst, Katy L. Chubb, Helling, Christiane, Oliver Herbort, Robb Calder, Peter Woitke, Helling, C., Christiane Helling, Baeyens, R., Samra, D., Samra, Dominic, Hirst, Georgina, Carone, Ludmila, Calder, R., Herbort, O., David Lewis, Chubb, Katy L.   +29 more
core   +1 more source

Planetary migration and the origin of the 2:1 and 3:2 (near)-resonant population of close-in exoplanets [PDF]

Astronomy & Astrophysics, 2017
We present an analytical and numerical study of the orbital migration and resonance capture of fictitious two-planet systems with masses in the super-Earth range undergoing Type-I migration. We find that, depending on the flare index and proximity to the central star, the average value of the period ratio, $P_2/P_1$, between both planets may show a ...
Ramos, X. S., Charalambous, C., Benitez-Llambay, P., Beauge, C.   +3 more
openaire   +4 more sources