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- W3102956384 abstract "We investigate a population of transiting planets that receive relatively modest stellar insolation, indicating equilibrium temperatures $< 1000$ K, and for which the heating mechanism that inflates hot Jupiters does not appear to be significantly active. We use structural evolution models to infer the amount of heavy elements within each of these planets. There is a correlation between the stellar metallicity and the mass of heavy elements in its transiting planet(s). It appears that all giant planets posses a minimum of $sim$ 10-15 Earth masses of heavy elements, with planets around metal-rich stars having larger heavy element masses. There is also an inverse relationship between the mass of the planet and the metal enrichment ($Z_{textrm pl} / Z_{textrm star}$), which appears to have little dependency on the metallicity of the star. Saturn- and Jupiter-like enrichments above solar composition are a hallmark of all the gas giants in the sample, even planets of several Jupiter masses. These relationships provides an important constraint on planet formation, and suggests large amounts of heavy elements within planetary H/He envelopes. We suggest that the observed correlation can soon also be applied to inflated planets, such that the interior heavy element abundance of these planets could be estimated, yielding better constraints no their interior energy sources. We point to future directions for planetary population synthesis models and suggest future correlations. This appears to be the first evidence that extrasolar giant planets, as a class, are enhanced in heavy elements." @default.
- W3102956384 created "2020-11-23" @default.
- W3102956384 creator A5023087369 @default.
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- W3102956384 date "2011-07-07" @default.
- W3102956384 modified "2023-10-09" @default.
- W3102956384 title "THE HEAVY-ELEMENT MASSES OF EXTRASOLAR GIANT PLANETS, REVEALED" @default.
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- W3102956384 doi "https://doi.org/10.1088/2041-8205/736/2/l29" @default.
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