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Zero Age Planetary Orbit of Gas Giant Planets Revisited: Reinforcement of the Link with Stellar Metallicity
Rafael Pinotti, Heloisa Maria Boechat-Roberty, Gustavo Frederico Porto de Mello
In 2005 we suggested a relation between the optimal locus of gas giant planet formation, prior to migration, and the metallicity of the host star, based on the core accretion model…
The age-mass-metallicity-activity relation for solar-type stars: Comparisons with asteroseismology and the NGC 188 open cluster
Diego Lorenzo-Oliveira, Gustavo F. Porto de Mello, Ricardo P. Schiavon
The Mount Wilson Ca II index log is the accepted standard metric of calibration for the chromospheric activity versus age relation of FGK stars. Recent results claim…
Fine structure of the age-chromospheric activity relation in solar-type stars I: The Ca II infrared triplet: Absolute flux calibration
Diego Lorenzo-Oliveira, Gustavo F. Porto de Mello, Letícia Dutra-Ferreira +1
Strong spectral lines are useful indicators of stellar chromospheric activity. They are physically linked to the convection efficiency, differential rotation, and angular momentum…