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Stellar Abundances in the Solar Neighborhood
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Contact: F.X.Timmes
my one page vitae,
full vitae,
research statement, and
teaching statement.
Stellar Abundances in the Solar Neighborhood: The Hypatia Catalog (2014)

In this article, we compile spectroscopic abundance data from 84 literature sources for 50 elements across 3058 stars in the solar neighborhood, within 150 pc of the Sun, to produce the Hypatia Catalog.

We evaluate the variability of the spread in abundance measurements reported for the same star by different surveys. We also explore the likely association of the star within the Galactic disk, the corresponding observation and abundance determination methods for all catalogs in Hypatia, the influence of specific catalogs on the overall abundance trends, and the effect of normalizing all abundances to the same solar scale.

The resulting large number of stellar abundance determinations in the Hypatia Catalog are analyzed only for thin-disk stars with observations that are consistent between literature sources. As a result of our large dataset, we find that the stars in the solar neighborhood may be reveal an asymmetric abundance distribution, such that a [Fe/H]-rich group near to the mid-plane is deficient in Mg, Si, S, Ca, Sc II, Cr II, and Ni as compared to stars further from the plane.

image
46 elements, 3058 stars


Explore stellar abundance data on 6,196 stars, 402 of which host planets, 70 elements and species, 190 catalogs, and 292,132 abundance measurements at the interactive Hypatia catalog.