54 citations · 295 across the 17 of their papers we have counts for
18 papers
Benchmark Brown Dwarf Systems I: Chemical Abundance Analysis of FGK Stars with Wide-Separation Brown Dwarf Companions Using PEPSI
Caprice L. Phillips, Megan Bedell, Catherine Manea +11
We present results from a spectroscopic survey of 32 FGK stars hosting brown dwarfs, using high-resolution optical spectra (R = 130,000 and 50,000) obtained with the PEPSI spectrog…
Untangling the Sources of Abundance Dispersion in Low-metallicity Stars II: Neutron Capture Elements
Emily J. Griffith, Marissa Blum, David H. Weinberg +4
We present the abundances of 23 elements, including 11 heavy elements (Cu, Zn, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, Eu) for up to 86 metal-poor (-2 < [Fe/H] < -1) subgiants. We use KORG,…
Retrieving Young Cloudy L-Dwarfs: A Nearby Planetary-Mass Companion BD+60 1417B and Its Isolated Red Twin W0047
Caprice L. Phillips, Jacqueline K. Faherty, Ben Burningham +11
We present an atmospheric retrieval analysis on a set of young, cloudy, red L-dwarfs -- CWISER J124332.12+600126.2 and WISEP J004701.06+680352.1 -- using the \textit{Brewster} retr…
Spectacular nucleosynthesis from early massive stars
Alexander P. Ji, Sanjana Curtis, Nicholas Storm +39
Stars formed with initial mass over 50 Msun are very rare today, but they are thought to be more common in the early universe. The fates of those early, metal-poor, massive stars a…
The Scale of Stellar Yields: Implications of the Measured Mean Iron Yield of Core Collapse Supernovae
David H. Weinberg, Emily J. Griffith, James W. Johnson +1
The scale of alpha-element yields is difficult to predict from theory because of uncertainties in massive star evolution, supernova physics, and black hole formation, and it is dif…
KPM: A Flexible and Data-Driven K-Process Model for Nucleosynthesis
Emily J. Griffith, David W. Hogg, Julianne J. Dalcanton +4
The element abundance pattern found in Milky Way disk stars is close to two-dimensional, dominated by production from one prompt process and one delayed process. This simplicity is…
Untangling the Sources of Abundance Dispersion in Low-Metallicity Stars
Emily J. Griffith, Jennifer A. Johnson, David H. Weinberg +4
We measure abundances of 12 elements (Na, Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) in a sample of 86 metal-poor () subgiant stars in the so…
Empirical Constraints on the Nucleosynthesis of Nitrogen
James W. Johnson, David H. Weinberg, Fiorenzo Vincenzo +2
We derive empirical constraints on the nucleosynthetic yields of nitrogen by incorporating N enrichment into our previously developed and empirically tuned multi-zone galactic chem…
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
Abdurro'uf, Katherine Accetta, Conny Aerts +337
This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete…
Residual Abundances in GALAH DR3: Implications for Nucleosynthesis and Identification of Unique Stellar Populations
Emily J. Griffith, David H. Weinberg, Sven Buder +3
We investigate the [X/Mg] abundances of 16 elements for 82,910 Galactic disk stars from GALAH+ DR3. We fit the median trends of low-Ia and high-Ia populations with a two-process mo…
Chemical Cartography with APOGEE: Mapping Disk Populations with a Two-Process Model and Residual Abundances
David H. Weinberg, Jon A. Holtzman, Jennifer A. Johnson +33
We apply a novel statistical analysis to measurements of 16 elemental abundances in 34,410 Milky Way disk stars from the final data release (DR17) of APOGEE-2. Building on recent w…
CNO dredge-up in a sample of APOGEE/Kepler red giants: Tests of stellar models and Galactic evolutionary trends of N/O and C/N
Fiorenzo Vincenzo, David H. Weinberg, Josefina Montalbán +8
Surface abundances of C, N, and O in red giants are affected by processed material mixed into the stars' convective envelopes. Using a sample of stars with elemental ab…
Stellar Migration and Chemical Enrichment in the Milky Way Disc: A Hybrid Model
James W. Johnson, David H. Weinberg, Fiorenzo Vincenzo +6
We develop a hybrid model of galactic chemical evolution that combines a multi-ring computation of chemical enrichment with a prescription for stellar migration and the vertical di…
The Impact of Black Hole Formation on Population Averaged Supernova Yields
Emily J. Griffith, Tuguldur Sukhbold, David H. Weinberg +3
The landscape of black hole (BH) formation -- which massive stars explode as core-collapse supernovae (CCSN) and which implode to BHs -- profoundly affects the IMF-averaged nucleos…
Nucleosynthesis signatures of neutrino-driven winds from proto-neutron stars: a perspective from chemical evolution models
Fiorenzo Vincenzo, Todd A. Thompson, David H. Weinberg +3
We test the hypothesis that the observed first-peak (Sr, Y, Zr) and second-peak (Ba) s-process elemental abundances in low-metallicity Milky Way stars, and the abundances of the el…
The Similarity of Abundance Ratio Trends and Nucleosynthetic Patterns in the Milky Way Disk and Bulge
Emily Griffith, David H. Weinberg, Jennifer A. Johnson +9
We compare abundance ratio trends in a sample of Milky Way bulge stars ( kpc) from the Apache Point Observatory Galactic Evolution Experiment (APOGEE)…
Abundance ratios in GALAH DR2 and their implications for nucleosynthesis
Emily Griffith, Jennifer A. Johnson, David H. Weinberg
Using a sample of 70 924 stars from the second data release of the GALAH optical spectroscopic survey, we construct median sequences of [X/Mg] vs. [Mg/H] for 21 elements, separatin…
A Comparison of Stellar and Gas-Phase Chemical Abundances in Dusty Early-Type Galaxies
Emily Griffith, Paul Martini, Charlie Conroy
While we observe a large amount of cold interstellar gas and dust in a subset of the early-type galaxy (ETG) population, the source of this material remains unclear. The two main,…