Results 91 to 100 of about 5,562 (188)

On the Ordering of Exoplanet Systems

The Astrophysical Journal
We 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   +1 more source

Comparing key compositional indicators in Jupiter with those in extra-solar giant planets [PDF]

, 2019
Spectroscopic transiting observations of the atmospheres of hot Jupiters around other stars, first with Hubble Space Telescope and then Spitzer, opened the door to compositional studies of exoplanets.
Bean, J., Beichman, C., Greene, T., Hammel, H. B., Lunine, J. I., Marley, M. S.   +5 more
core   +1 more source

The Spin–Orbit Alignment of Eight Warm Gas Giant Systems

The Astronomical Journal
Essential information about the formation and evolution of planetary systems can be found in their architectures—in particular, in stellar obliquity ( ψ )—as they serve as a signature of their dynamical evolution. Here we present ESPRESSO observations of
Juan I. Espinoza-Retamal, Andrés Jordán, Rafael Brahm, Cristobal Petrovich, Elyar Sedaghati, Guðmundur Stefánsson, Melissa J. Hobson, Marcelo Tala Pinto, Diego J. Muñoz, Gavin Boyle, Rodrigo Leiva, Vincent Suc   +11 more
doaj   +1 more source

Formation and Disruption of Resonant Chains of Super-Earths: Secular Perturbations from Outer Eccentric Embryos

The Astrophysical Journal
Recent observations have revealed the distribution of orbital period ratios of adjacent planets in multiple super-Earth systems and how these distributions change with time.
Masahiro Ogihara, Masanobu Kunitomo
doaj   +1 more source

The Epoch of Giant Planet Migration Planet Search Program. III. The Occurrence Rate of Young Giant Planets inside the Water Ice Line

The Astronomical Journal
We present statistical results from the Epoch of Giant Planet Migration RV planet search program. This survey was designed to measure the occurrence rate of giant planets interior to the water ice line of young Sun-like stars, compare this to the ...
Quang H. Tran, Brendan P. Bowler, William D. Cochran, Chad F. Bender, Samuel Halverson, Suvrath Mahadevan, Joe P. Ninan, Paul Robertson, Arpita Roy, Guðmundur Stefánsson, Ryan C. Terrien   +10 more
doaj   +1 more source

Double Hot Jupiter Formation through Mirrored ZLK Migration in Binary Star Systems: The Case of WASP-94

The Astrophysical Journal Letters
To date, only a handful of binary star systems are known with at least one confirmed planet orbiting each star. Such systems, however, offer a unique perspective on the stochasticity intrinsic to planet formation and evolution—particularly in twin binary
Yurou Liu, Tiger Lu, Malena Rice
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Characterization of exoplanet hosts

EPJ Web of Conferences, 2013
Spectroscopic analysis of exoplanet hosts and the stellar sample from which they are drawn provides abundances and other properties that quantitively constrain models of planet formation.
Valenti Jeff A.
doaj   +1 more source

Breaking Giant Chains: Early-stage Instabilities in Long-period Giant Planet Systems

The Astrophysical Journal
Orbital evolution is a critical process that sculpts planetary systems, particularly during their early stages where planet–disk interactions are expected to lead to the formation of resonant chains.
Vighnesh Nagpal, Max Goldberg, Konstantin Batygin   +2 more
doaj   +1 more source

The timescale for giant planet formation : constraints from the rotational evolution of exoplanet host stars

, 2008
The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models. We present here new constraints on planet formation timescales derived from the rotational evolution of ...
Bouvier, Jerome
core   +1 more source