Results 91 to 100 of about 1,639,294 (145)

Where Are the Water Worlds? Identifying Exo-water-worlds Using Models of Planet Formation and Atmospheric Evolution

The Astrophysical Journal
Planet formation models suggest that the small exoplanets that migrate from beyond the snowline of the protoplanetary disk likely contain water-ice-rich cores (∼50% by mass), also known as water worlds.
Aritra Chakrabarty, Gijs D. Mulders
doaj   +1 more source

South-South migration and human development: Reflections on African experiences [PDF]

, 2009
This paper looks at the relationship between migration between developing countries – or countries of the global ‘South’ – and processes of human development.
Bakewell, Oliver; id_orcid, Bakewell, Oliver   +1 more
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The Impact-driven Atmospheric Loss of Super-Earths around Different Spectral Types of Host Stars

The Astrophysical Journal
A planet’s mass loss is important for the its formation and evolution. The radius valley (RV) is believed to be triggered by evaporation-induced mass loss.
Wei Zhong, Cong Yu, Shi Jia, Shang-Fei Liu   +3 more
doaj   +1 more source

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

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

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

Care migration from rural Hungary [PDF]

, 2018
szabadon elérhető / Free accessInternational Migration Conference: EU at the crossroads of migration: critical reflections on the ‘refugee crisis’ and new migration deals. Utrecht, Hollandia, 2018.
Váradi, Monika Mária, Németh, Krisztina   +1 more
core  

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

Keeping them in their place: The ambivalent relationship between migration and development in Africa [PDF]

, 2007
Migration has moved to the centre stage of development policy after decades of waiting in the wings. For most of the last sixty years, migration has been portrayed in development circles in largely negative terms and identified as one of the problems ...
Bakewell, Oliver
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