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I. Ramirez

Researcher at Max Planck Society

Publications -  20
Citations -  2562

I. Ramirez is an academic researcher from Max Planck Society. The author has contributed to research in topics: Stars & Metallicity. The author has an hindex of 13, co-authored 20 publications receiving 2420 citations. Previous affiliations of I. Ramirez include Carnegie Learning & National University of San Marcos.

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New constraints on the chemical evolution of the solar neighbourhood and galactic disc(s) - improved astrophysical parameters for the Geneva-Copenhagen Survey

TL;DR: In this article, the Geneva-Copenhagen survey was used for a re-analysis of the spectral properties of the stars in the solar neighborhood and the results showed that the stars are on average 100 K hotter and 0.1 dex more metal rich, which shifted the peak of the metallicity distribution function around the solar value.
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An absolutely calibrated T eff scale from the infrared flux method. Dwarfs and subgiants

TL;DR: In this paper, a large set of solar twins, stars which are spectroscopically and photometrically identical to the Sun, were used to set the absolute zero point of the effective temperature scale to within few degrees.
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Accurate abundance patterns of solar twins and analogs - Does the anomalous solar chemical composition come from planet formation?

TL;DR: In this paper, the abundance of 19 elements in a sample of 64 stars with fundamental parameters very similar to solar, which minimizes the impact of systematic errors in their spectroscopic 1D-LTE differential analysis, using high-resolution (R � 60 000), high signal-to-noise ratio (S /N � 200) spectra.

A possible signature of terrestrial planet formation in the chemical composition of solar analogs

TL;DR: In this article, the authors analyzed abundance results from six large independent stellar abundance surveys to determine whether they confirm or reject the observational finding that the elemental abundances derived for solar analogs in these six studies are consistent with the trend suggested as a planet formation signature.