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10 papers · 2 filters
Imaging Jupiter's radiation belts down to 127 MHz with LOFAR
J. N. Girard, P. Zarka, C. Tasse +71
Context. Observing Jupiter's synchrotron emission from the Earth remains today the sole method to scrutinize the distribution and dynamical behavior of the ultra energetic electron…
The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion
Sara Gettel, David Charbonneau, Courtney D. Dressing +47
Kepler-454 (KOI-273) is a relatively bright (V = 11.69 mag), Sun-like starthat hosts a transiting planet candidate in a 10.6 d orbit. From spectroscopy, we estimate the stellar tem…
The Mass-Metallicity Relation for Giant Planets
Daniel P. Thorngren, Jonathan J. Fortney, Ruth A. Murray-Clay +1
Exoplanet discoveries of recent years have provided a great deal of new data for studying the bulk compositions of giant planets. Here we identify 47 transiting giant planets ($20…
Re-inflated Warm Jupiters Around Red Giants
Eric D. Lopez, Jonathan J. Fortney
Since the discovery of the first transiting hot Jupiters, models have sought to explain the anomalously large radii of highly irradiated gas giants. We now know that the size of ho…
Planetesimal formation in self-gravitating discs -- dust trapping by vortices
P. G. Gibbons, G. R. Mamatsashvili, W. K. M. Rice
The mechanism through which meter-sized boulders grow to km-sized planetesimals in protoplanetary discs is a subject of active research, since it is critical for planet formation.…
Gaia: The Astrometry Revolution
A. Sozzetti, M. Bonavita, S. Desidera +2
The power of micro-arcsecond (as) astrometry is about to be unleashed. ESA's Gaia mission, now headed towards the end of the first year of routine science operations, will soon…