Astrophysical: Stellar abundances

  • 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
    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...

  • Publication
    Detailed Chemical Abundances for a Benchmark Sample of M Dwarfs from the APOGEE Survey

    Individual chemical abundances for 14 elements (C, O, Na, Mg, Al, Si, K, Ca, Ti, V, Cr, Mn, Fe, and Ni) are derived for a sample of M dwarfs using high...

  • Publication
    Heavy-element Abundances in P-rich Stars: A New Site for the s-process?

    The recently discovered phosphorus-rich stars pose a challenge to stellar evolution and nucleosynthesis theory, as none of the existing models can explain their...

  • Publication
    Multiple Populations in Low-mass Globular Clusters: Palomar 13

    Since the discovery of chemically peculiar stars in globular clusters in the last century, the study of multiple populations has become increasingly important...

  • Publication
    Overview of the DESI Milky Way Survey

    We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak...