Stellar abundances in the solar neighborhood: The hypatia catalog

Natalie R. Hinkel, Francis Timmes, Patrick Young, Michael D. Pagano, Margaret C. Turnbull

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

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 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 data set, we find that the stars in the solar neighborhood may reveal an asymmetric abundance distribution, such that a [Fe/H]-rich group near the midplane is deficient in Mg, Si, S, Ca, Sc II, Cr II, and Ni as compared to stars farther from the plane. The Hypatia Catalog has a wide number of applications, including exoplanet hosts, thick- and thin-disk stars, and stars with different kinematic properties.

Original languageEnglish (US)
Article number54
JournalAstronomical Journal
Volume148
Issue number3
DOIs
StatePublished - Sep 1 2014

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Keywords

  • abundances - stars
  • catalogs - planetary systems - solar neighborhood - stars
  • fundamental parameters

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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