Results 1 to 10 of about 3,429 (163)
Evidence for Low-level Dynamical Excitation in Near-resonant Exoplanet Systems [PDF]
The Astronomical Journal, 2023 The geometries of near-resonant planetary systems offer a relatively pristine window into the initial conditions of exoplanet systems. Given that near-resonant systems have likely experienced minimal dynamical disruptions, the spin–orbit orientations of ...
Malena Rice +20 more
doaj +6 more sources
The Orbital Geometries and Stellar Obliquities of Exoplanet-hosting Multistar Systems [PDF]
The Astronomical JournalThe current orbital geometries of exoplanet systems offer a fossilized record of the systems’ dynamical histories. A particularly rich set of dynamical mechanisms is available to exoplanets residing in multistar systems, which may have their evolution ...
Malena Rice +2 more
doaj +3 more sources
PLANETESIMAL COMPOSITIONS IN EXOPLANET SYSTEMS [PDF]
Astrophysical Journal, 2012 We have used recent surveys of the composition of exoplanet host stars to investigate the expected composition of condensed material in planetesimals formed beyond the snow line in the circumstellar nebulae of these systems. Of the major solid forming elements, we find that, as for the Sun, the C and O abundances (and particularly the C/O abundance ...
Nikku Madhusudhan, Jonathan Lunine
exaly +4 more sources
On the Ordering of Exoplanet Systems
The Astrophysical JournalWe present a comprehensive analysis of planetary radius ordering within multiplanet systems, namely their ordinal position with respect to their size in a given system, utilizing data from the NASA Exoplanet Archive. In addition, we consider not only the
Michael Lozovsky, Hagai B. Perets
doaj +3 more sources
Exoplanets prediction in multiplanetary systems [PDF]
Publications of the Astronomical Society of Australia, 2021 AbstractWe present the results of a search for additional exoplanets in all multiplanetary systems discovered to date, employing a logarithmic spacing between planets in our Solar System known as the Titius–Bode (TB) relation. We use the Markov Chain Monte Carlo method and separately analyse 229 multiplanetary systems that house at least three or more ...
M. Mousavi-Sadr +2 more
openaire +3 more sources
Is there an exoplanet in the Solar system? [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2016 Abstract We investigate the prospects for the capture of the proposed Planet 9 from other stars in the Sun's birth cluster. Any capture scenario must satisfy three conditions: the encounter must be more distant than ∼150 au to avoid perturbing the Kuiper belt; the other star must have a wide-orbit planet (a ≳ 100 au); the planet must be ...
Mustill, Alexander J., +2 more
openaire +3 more sources
The Science of Exoplanets and Their Systems [PDF]
Astrobiology, 2013 A scientific forum on "The Future Science of Exoplanets and Their Systems," sponsored by Europlanet and the International Space Science Institute (ISSI) and co-organized by the Center for Space and Habitability (CSH) of the University of Bern, was held during December 5 and 6, 2012, in Bern, Switzerland.
Lammer, Helmut +22 more
openaire +7 more sources
Analysis of the exoplanet containing system Kepler-91 [PDF]
Astrophysics and Space Science, 2015 We have applied the graphical user interfaced close binary system analysis program WinFitter to an intensive study of Kepler 91 using all the available photometry from the NASA Exoplanet Archive (NEA) at the Caltech website: http://exoplanetarchive.ipac.caltech.edu . Our fitting function for the tidal distortion derives from the relevant Radau equation
Budding, E. +9 more
openaire +7 more sources
A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates
Geophysical Monograph Series, Page 47-54., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky +2 more
wiley +2 more sources
The Astronomical Journal, 2023 We investigate and compare the composition of M-dwarf planets in systems with only one known planet (“singles”) to those residing in multiplanet systems (“multis”) and the fundamental properties of their host stars.
Romy Rodríguez Martínez +6 more
doaj +1 more source