Hot Jupiter occurrence in the Galactic halo is low at ~0.13% with no significant difference between in-situ and accreted populations, well below disk rates.
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3 Pith papers cite this work. Polarity classification is still indexing.
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Higher host-star C/O ratios correlate with longer orbital periods for giant planets, based on spectra from 598 stars and supported by pebble-formation models.
Tentative evidence for a super-Jupiter at 15-100 AU or brown dwarf at 20-170 AU in 51 Pegasi from RV curvature, but the signal is likely driven by Lick/Hamilton instrument drift.
citing papers explorer
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Chemical Abundances Shape History (CASH). I. A Link between Giant Planets Orbital Periods and Host Stellar C/O Ratios
Higher host-star C/O ratios correlate with longer orbital periods for giant planets, based on spectra from 598 stars and supported by pebble-formation models.