Publications (72)
The r-Process Enriched Low Metallicity Giant HD 115444
Jenny Westin, Christopher Sneden, Bengt Gustafsson +1
R-Process Abundances and Chronometers in Metal-Poor Stars
John J. Cowan, B. Pfeiffer, K. -L. Kratz +5
Stellar Abundance Observations
John J Cowan, Christopher Sneden, James W Truran +1
Near-UV Observations of CS29497-030: New Constraints on Neutron-Capture Nucleosynthesis Processes
Inese I. Ivans, Christopher Sneden, Roberto Gallino +2
New Analyses of Star-to-Star Abundance Variations Among Bright Giants in the Mildly Metal-Poor Globular Cluster M5
Inese I. Ivans, Robert P. Kraft, Christopher Sneden +3
Characterizing the Chemistry of the Milky Way Stellar Halo: Detailed Chemical Analysis of a Metal-Poor Stellar Stream
Ian U. Roederer, Christopher Sneden, Ian B. Thompson +2
Hubble Space Telescope Near-Ultraviolet Spectroscopy of Bright CEMP-s Stars
Vinicius M. Placco, Timothy C. Beers, Inese I. Ivans +14
Nucleosynthesis: Stellar and Solar Abundances and Atomic Data
John J. Cowan, James E. Lawler, Christopher Sneden +2
Neutron-Capture Element Abundances in Halo Stars
John J. Cowan, Christopher Sneden
Chemical Compositions of Evolved Stars From Near-Infrared IGRINS High-Resolution Spectra. I. Abundances in Three Red Horizontal Branch Stars
Melike AfÅar, Christopher Sneden, Michael P. Wood +6
Heavy Element Dispersion in the Metal-Poor Globular Cluster M92
Ian U. Roederer, Christopher Sneden
The Chemical Composition and Age of the Metal-Poor Halo Star BD +17^\circ 3248
John J. Cowan, Christopher Sneden, Scott Burles +8
New Abundance Determinations of Cadmium, Lutetium, and Osmium in the r-process Enriched Star BD+173248
Ian U. Roederer, Christopher Sneden, James E. Lawler +1
The Chemical Composition Contrast between M3 and M13 Revisited: New Abundances for 28 Giant Stars in M3
Christopher Sneden, Robert P. Kraft, Puragra Guhathakurta +2
Detection of the Second r-process Peak Element Tellurium in Metal-Poor Stars
Ian U. Roederer, James E. Lawler, John J. Cowan +6
The Chemical Abundances of Stars in the Halo (CASH) Project. II. A Sample of 16 Extremely Metal-poor Stars
Julie K. Hollek, Anna Frebel, Ian U. Roederer +5
Multi-Element Abundance Measurements from Medium-Resolution Spectra. I. The Sculptor Dwarf Spheroidal Galaxy
Evan N. Kirby, Puragra Guhathakurta, Michael Bolte +2
Line lists for the A2PI-X2Sigma+ (red) and {B2Sigma+-X2Sigma} (violet) Systems of CN, 13C14N, and 12C15N, and Application to Astronomical Spectra
Christopher Sneden, Sara Lucatello, Ram S. Ram +2
Atmospheric Stellar Parameters from Cross-Correlation Functions
Luca Malavolta, Christophe Lovis, Francesco Pepe +2
Advances in r-Process Nucleosynthesis
John J. Cowan, Christopher Sneden
The Chemical Compositions of Variable Field Horizontal Branch Stars: RR Lyrae Stars
Bi-Qing For, Christopher Sneden, George W. Preston
Line Strengths of Rovibrational and Rotational Transitions in the X$^2Î $ Ground State of OH
James S. A. Brooke, Peter F. Bernath, Colin M. Western +4
Chemical Abundances of RR Lyrae Type C Star AS162158
Jose Govea, Thomas Gomez, George W. Preston +1
New Hubble Space Telescope Observations of Heavy Elements in Four Metal-Poor Stars
Ian U. Roederer, James E. Lawler, Jennifer S. Sobeck +7
Silicon and Oxygen Abundances in Planet-Host Stars
Erik Brugamyer, Sarah E. Dodson-Robinson, William D. Cochran +1
The Absolute Magnitude of RRc Variables From Statistical Parallax
Juna A. Kollmeier, Dorota M. Szczygiel, Christopher R. Burns +12
The Chemical Compositions of Non-Variable Red and Blue Field Horizontal Branch Stars
Bi-Qing For, Christopher Sneden
New Initiatives on RR Lyrae Chemical Compositions
Christopher Sneden, Bi-Qing For, George W. Preston
Evidence of Multiple r-Process Sites in the Early Galaxy: New Observations of CS 22892-052
Christopher Sneden, John J. Cowan, Inese I. Ivans +4
CS22964-161: A Double-Lined Carbon- and s-Process-Enhanced Metal-Poor Binary Star
Ian B. Thompson, Inese I. Ivans, Sara Bisterzo +6
Improved Laboratory Transition Probabilities for Neutral Chromium and Re-determination of the Chromium Abundance for the Sun and Three Stars
Jennifer S. Sobeck, James E. Lawler, Christopher Sneden
Near-UV Observations of HD221170: New Insights into the Nature of r-Process-Rich Stars
Inese I. Ivans, Jennifer Simmerer, Christopher Sneden +4
HST Observations of Heavy Elements in Metal-Poor Galactic Halo Stars
John J. Cowan, Christopher Sneden, Timothy C. Beers +6
Atmospheric Parameters and Metallicities for 2191 stars in the Globular Cluster M4
Luca Malavolta, Christopher Sneden, Giampaolo Piotto +3
New Rare Earth Element Abundance Distributions for the Sun and Five r-Process-Rich Very Metal-Poor Stars
Christopher Sneden, James E. Lawler, John J. Cowan +2
The Axial Rotation and Variable Macroturbulence of RR Lyrae and Red Horizontal Branch Stars
George W. Preston, Christopher Sneden, Merieme Chadid +2
Chemical Abundances for Evolved Stars in M5: Lithium through Thorium
David K. Lai, Graeme H. Smith, Michael Bolte +4
Multi-Element Abundance Measurements from Medium-Resolution Spectra. II. Catalog of Stars in Milky Way Dwarf Satellite Galaxies
Evan N. Kirby, Puragra Guhathakurta, Joshua D. Simon +7
The r-Process and Chronometers
John J. Cowan, Christopher Sneden, James W. Truran
Key Challenges for AAS Journals in the Next Decade
Emily M. Levesque, Lisa Prato, Christopher Sneden +6
The R-Process Alliance: First Release from the Northern Search for r-Process Enhanced Metal-Poor Stars in the Galactic Halo
Charli M. Sakari, Vinicius M. Placco, Elizabeth M. Farrell +26
The RRC Stars: Chemical Abundances and Envelope Kinematics
Christopher Sneden, George W. Preston, Merieme Chadid +1
Searching for Planets in the Hyades IV: Differential Abundance Analysis of Hyades Dwarfs
Diane B. Paulson, Christopher Sneden, William D. Cochran
Metallicity and Alpha-Element Abundance Measurement in Red Giant Stars from Medium Resolution Spectra
Evan N. Kirby, Puragra Guhathakurta, Christopher Sneden
An Extremely Lithium-Rich Bright Red Giant in the Globular Cluster M3
Robert P. Kraft, Ruth C. Peterson, Puragra Guhathakurta +3
The R-Process Alliance: 2MASS J09544277+5246414, the Most Actinide-Enhanced R-II Star Known
Erika M. Holmbeck, Timothy C. Beers, Ian U. Roederer +8
Spectroscopic Comparison of Metal-Rich RRab Stars of the Galactic Field with Their Metal-Poor Counterparts
Merieme Chadid, Christopher Sneden, George W. Preston
Wolf 1130: A Nearby Triple System Containing a Cool, Ultramassive White Dwarf
Gregory N. Mace, Andrew W. Mann, Brian A. Skiff +9
H2, CO, and Dust Absorption through Cold Molecular Clouds
John H. Lacy, Christopher Sneden, Hwihyun Kim +1
The Chemical Abundances of Stars in the Halo (CASH) Project. III. A New Classification Scheme for Carbon-Enhanced Metal-poor Stars with S-process Element Enhancement
Julie K. Hollek, Anna Frebel, Vinicius M. Placco +4
Three-Dimensional Spectral Classification of Low-Metallicity Stars Using Artificial Neural Networks
Shawn Snider, Carlos Allende Prieto, Ted von Hippel +4
A Spectroscopic Survey of Field Red Horizontal-Branch Stars
Melike AfÅar, Zeynep Bozkurt, Gamze Böcek Topcu +3
New Detections of Arsenic, Selenium, and Other Heavy Elements in Two Metal-Poor Stars
Ian U. Roederer, Hendrik Schatz, James E. Lawler +6
Star-to-Star Abundance Variations among Bright Giants in the Mildly Metal-Poor Globular Cluster M4
Inese I. Ivans, Christopher Sneden, Robert P. Kraft +5
A Search for Stars of Very Low Metal Abundance. VI. Detailed Abundances of 313 Metal-Poor Stars
Ian U. Roederer, George W. Preston, Ian B. Thompson +4
The End of Nucleosynthesis: Production of Lead and Thorium in the Early Galaxy
Ian U. Roederer, Karl-Ludwig Kratz, Anna Frebel +4
Halo Star Abundances and Heavy Element Nucleosynthesis
John J. Cowan, Christopher Sneden
Do AGB Stars Differ Chemically from RGB Stars in Globular Clusters?
Christopher Sneden, Inese I. Ivans, Robert P. Kraft
Hubble Space Telescope Near-Ultraviolet Spectroscopy of the Bright CEMP-no Star BD+44 493
Vinicius Placco, Timothy Beers, Ian Roederer +10
Explorations of the r-Processes: Comparisons between Calculations and Observations of Low-Metallicity Stars
Karl-Ludwig Kratz, Khalil Farouqi, Bernd Pfeiffer +3
r-Process Abundance Signatures in Metal-Poor Halo Stars
John J. Cowan, Ian U. Roederer, Christopher Sneden +1
Iron-Group Abundances in the Metal-Poor Main Sequence Turnoff Star HD~84937
Christopher Sneden, John J. Cowan, Chiaki Kobayashi +4
Metal-Rich RRc stars in the Carnegie RR Lyrae Survey
Christopher Sneden, George W. Preston, Juna A. Kollmeier +6
Radial Velocities and Pulsation Ephemerides of 11 Field RR Lyrae Stars
Bi-Qing For, George W. Preston, Christopher Sneden
The R-Process Alliance: Discovery of a low-alpha, r-Process-Enhanced Metal-Poor Star in the Galactic Halo
Charli M. Sakari, Ian U. Roederer, Vinicius M. Placco +24
Consistent Iron Abundances Derived from Neutral and Singly-Ionized Iron Lines in Ultraviolet and Optical Spectra of Six Warm Metal-Poor Stars
Ian U. Roederer, Christopher Sneden, James E. Lawler +3
Europium, Samarium, and Neodymium Isotopic Fractions in Metal-Poor Stars
Ian U. Roederer, James E. Lawler, Christopher Sneden +3
The Chemical Compositions of Very Metal-Poor Stars HD 122563 and HD 140283; A View From the Infrared
Melike AfÅar, Christopher Sneden, Anna Frebel +11
A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars
Jennifer Simmerer, Christopher Sneden, Inese I. Ivans +3
Accurate M Dwarf Metallicities from Spectral Synthesis: A Critical Test of Model Atmospheres
Jacob L. Bean, Christopher Sneden, Peter H. Hauschildt +2
Europium Isotopic Abundances in Very Metal-poor Stars
Christopher Sneden, John J. Cowan, James E. Lawler +3
The Hobby-Eberly Telescope "Chemical Abundances of Stars in the Halo" (CASH) Project. I. The Lithium-, s-, and r-Enhanced Metal-Poor Giant HKII 17435-00532
Ian U. Roederer, Anna Frebel, Matthew D. Shetrone +7