97 citations · 225 across the 16 of their papers we have counts for
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Exploring the History of Stellar Mergers with Chemistry: Examining the Origins of Massive -Enriched Stars using Carbon Isotope Ratios
Zachary G. Maas, Keith Hawkins, Jeffrey M. Gerber +2
Recently discovered massive -enriched (MAE) stars have surface chemistry consistent with members of the older thick disk Milky Way population but high masses ( 1.5 - 3 M$_…
On its way to the neutron star-white dwarf binary graveyard, IGR J16194-2810, a first ascent M giant X-ray binary
K. H. Hinkle, F. C. Fekel, O. Straniero +5
A single-lined spectroscopic orbit for the M giant in the X-ray binary IGR J16194-2810 is determined from a time-series of optical spectra. The spectroscopic orbital period of 192.…
The Galactic Distribution of Phosphorus: A Survey of 163 Disk and Halo Stars
Z. G. Maas, K. Hawkins, N. R. Hinkel +3
Phosphorus (P) is a critical element for life on Earth yet the cosmic production sites of P are relatively uncertain. To understand how P has evolved in the solar neighborhood, we…
The Galactic Chemical Evolution of Chlorine
Z. G. Maas, C. A. Pilachowski
We measured Cl abundances in 52 M giants with metallicities between -0.5 [Fe/H] 0.12. Abundances and atmospheric parameters were derived using infrared spectra from…
Phosphorus Abundances in the Hyades and Galactic Disk
Z. G. Maas, G. Cescutti, C. A. Pilachowski
We have measured phosphorus abundances in nine disk stars between -1 [Fe/H] -0.5 and in 12 members of the Hyades open cluster using two P I lines at 1.06 m. High resolut…
Carbon Isotope Ratios in M10 Giants
Z. G. Maas, J. M. Gerber, Alex Deibel +1
We measured carbon abundances and the ratio in 31 giant branch stars with previous CN and CH band measurements that span -2.33 M …
Chlorine Isotope Ratios in M Giants
Z. G. Maas, C. A. Pilachowski
We have measured the chlorine isotope ratio in six M giant stars using HCl 1-0 P8 features at 3.7 microns with R 50,000 spectra from Phoenix on Gemini South. The average Cl…
Phosphorus Abundances in FGK Stars
Z. G. Maas, C. A. Pilachowski, G. Cescutti
We measured phosphorus abundances in 22 FGK dwarfs and giants that span --0.55 [Fe/H] 0.2 using spectra obtained with the Phoenix high resolution infrared spectrometer on t…
Chlorine Abundances in Cool Stars
Z. G. Maas, C. A. Pilachowski, K. Hinkle
Chlorine abundances are reported in 15 evolved giants and one M dwarf in the solar neighborhood. The Cl abundance was measured using the vibration-rotation 1-0 P8 line of HC…