SIMBAD references

2018ApJS..237...18K - Astrophys. J., Suppl. Ser., 237, 18-18 (2018/July-0)

Catalog of chromium, cobalt, and nickel abundances in globular clusters and dwarf galaxies.


Abstract (from CDS):

We present measurements of the abundances of chromium, cobalt, and nickel in 4113 red giants, including 2277 stars in globular clusters (GCs), 1820 stars in the Milky Way's dwarf satellite galaxies, and 16 field stars. We measured the abundances from mostly archival Keck/DEIMOS medium-resolution spectroscopy with a resolving power of R ∼ 6500 and a wavelength range of approximately 6500-9000 Å. The abundances were determined by fitting spectral regions that contain absorption lines of the elements under consideration. We used estimates of temperature, surface gravity, and metallicity that we previously determined from the same spectra. We estimated systematic error by examining the dispersion of abundances within mono-metallic GCs. The median uncertainties for [Cr/Fe], [Co/Fe], and [Ni/Fe] are 0.20, 0.20, and 0.13, respectively. Finally, we validated our estimations of uncertainty through duplicate measurements, and we evaluated the accuracy and precision of our measurements through comparison to high-resolution spectroscopic measurements of the same stars.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: abundances - galaxies: dwarf - Local Group - nuclear reactions, nucleosynthesis, abundances - supernovae

VizieR on-line data: <Available at CDS (J/ApJS/237/18): syst.dat table3.dat table4.dat table5.dat>

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 42

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2018ApJS..237...18K and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact