Astrophysical: Stellar abundances

  • Publication
    A Blueprint for the Milky Way's Stellar Populations. IV. A String of Pearls-the Galactic Starburst Sequence
    We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with...
  • Publication
    An attempt to derive Mg isotopic ratios in carbon stars
    We discuss the use of the spectral range near 7570 Å to determine the Mg isotopic ratios in carbon stars using the B'2 Sigma +-X 2 Sigma + system of the MgH...
  • Publication
    An Intermediate-age Alpha-rich Galactic Population in K2
    We explore the relationships between the chemistry, ages, and locations of stars in the Galaxy using asteroseismic data from the K2 mission and spectroscopic...
  • Publication
    APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
    The spectral analysis and data products in Data Release 16 (DR16; 2019 December) from the high-resolution near-infrared Apache Point Observatory Galactic...
  • Publication
    BACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)
    Elements with weak and blended spectral features in stellar spectra are challenging to measure and require specialized analysis methods to precisely measure...
  • Publication
    Boron Abundances in Early B Dwarfs of the Galactic Open Cluster NGC 3293
    New boron abundances or upper limits have been determined for eight early B stars in the young Galactic open cluster NGC 3293, using UV spectra obtained by the...
  • Publication
    Chemical Analysis of the Brightest Star of the Cetus II Ultrafaint Dwarf Galaxy Candidate
    We present a detailed chemical abundance analysis of the brightest star in the ultrafaint dwarf (UFD) galaxy candidate Cetus II from high-resolution Magellan...
  • Publication
    Chemical Cartography with APOGEE: Two-process Parameters and Residual Abundances for 288,789 Stars from Data Release 17
    Stellar abundance measurements are subject to systematic errors that induce extra scatter and artificial correlations in elemental abundance patterns. We derive...
  • Publication
    Cu and Zn abundances in metal-poor stars
    We present Cu and Zn abundances for a sample of 30 stars spanning a metallicity range between solar and [Fe/H]=-3. LTE abundances were obtained using Kurucz...