Results 81 to 90 of about 1,639,294 (145)
Rattle-and-break: The Impact of Planetesimal Scattering on Super-Earth Resonant Chains
The Astrophysical JournalThe spacings of super-Earths in multitransiting systems exhibit a distribution that is broad and mostly featureless, with the exception of notable excesses of planet pairs situated a few percent wide of first-order mean-motion resonances (MMRs).
Sam Hadden, Yanqin Wu
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The Astronomical JournalIt has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via ...
Henrique Reggiani +7 more
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Outward Migration of Low-Mass Planets: A Key to Observed Exoplanet Demographics
The rapidly expanding catalog of exoplanets reveals a striking diversity in planetary system architectures, characterized by the prevalence of super-Earths and mini-Neptunes, and distinctive features such as the "radius valley." While inward migration has long been established as a dominant process, particularly for hot Jupiters, the role of outward ...
Revista, Zen, ASTRO, 10
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Warm Jupiter Tidal Migration Can Spare Inner Planets; Hot Jupiter Tidal Migration May Not
The Astrophysical JournalIn this work, we investigate the dynamical survival of short-period inner planets during the high-eccentricity tidal migration of companion exterior giant planets.
Juliette Becker
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Searching for Snapshots of Giant Exoplanet Migration
NEID, an extreme precision Doppler spectrograph on the WIYN 3.5-meter Telescope at Kitt Peak National Observatory (a partnership between Indiana University, University of Wisconsin-Madison, Pennsylvania State University, Princeton University,Purdue University, NSF’s NOIRLab, and NASA), is helping unravel the origin of hot Jupiters.
openaire +3 more sources
Self-selection patterns in Mexico-U.S. migration: the role of migration networks [PDF]
, 2007 This paper examines the role of migration networks in determining self-selection patterns of Mexico-U.S. migration. We first present a simple theoretical framework showing how such networks impact on migration incentives at different education levels ...
Rapoport, Hillel +3 more
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Public opinion on migration [PDF]
, 2018 Mapping and understanding what shapes public attitudes are particularly critical at a time when immigration is often perceived as one of the most important political issues facing countries around the world, with significant implications for election ...
DENNISON, James
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Are WASP-107-like Systems Consistent with High-eccentricity Migration?
The Astrophysical JournalWASP-107 b seems to be a poster child of the long-suspected high-eccentricity migration scenario. It is on a 5.7 day, polar orbit. The planet is Jupiter-like in radius but Neptune-like in mass with exceptionally low density.
Hang Yu, Fei Dai
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The Astronomical JournalThe degree of alignment between a star’s spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution.
Nicholas Saunders +55 more
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Most Hot Jupiters Were Cool Giant Planets for More Than 1 Gyr
The Astronomical JournalThe origin of hot Jupiters is the oldest problem in exoplanet astrophysics. Hot Jupiters formed in situ or via disk migration should be in place just a few million years after the formation of their host stars.
Stephen P. Schmidt, Kevin C. Schlaufman
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