Christian R. Hayes
University of Virginia
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Featured researches published by Christian R. Hayes.
The Astrophysical Journal | 2017
S. T. Linden; Matthew Pryal; Christian R. Hayes; Nicholas W. Troup; Steven R. Majewski; Brett H. Andrews; Timothy C. Beers; R. Carrera; Katia Cunha; J. G. Fernández-Trincado; Peter M. Frinchaboy; Doug Geisler; Richard R. Lane; Christian Nitschelm; Kaike Pan; Carlos Allende Prieto; Alexandre Roman-Lopes; Verne V. Smith; Jennifer Sobeck; B. Tang; Sandro Villanova; Gail Zasowski
We utilize elemental-abundance information for Galactic red giant stars in five open clusters (NGC 7789, NGC 6819, M67, NGC 188, and NGC 6791) from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) DR13 dataset to age-date the chemical evolution of the high- and low-
The Astrophysical Journal | 2018
Christian R. Hayes; Steven R. Majewski; Matthew Shetrone; Emma Fernández-Alvar; Carlos Allende Prieto; William J. Schuster; Leticia Carigi; Katia Cunha; Verne V. Smith; Jennifer Sobeck; Andres Almeida; Timothy C. Beers; R. Carrera; J. G. Fernández-Trincado; D. A. García-Hernández; Doug Geisler; Richard R. Lane; Sara Lucatello; Allison M. Matthews; Dante Minniti; Christian Nitschelm; B. Tang; Patricia B. Tissera; Olga Zamora
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The Astrophysical Journal | 2018
Emma Fernández-Alvar; Leticia Carigi; William J. Schuster; Christian R. Hayes; Nancy Ávila-Vergara; S. R. Majewski; Carlos Allende Prieto; Timothy C. Beers; Sebastián F. Sánchez; Olga Zamora; Domingo Aníbla García-Hernández; B. Tang; J. G. Fernández-Trincado; Patricia B. Tissera; D. Geisler; Sandro Villanova
element sequences of the Milky Way. Key to this time-stamping is the cluster NGC 6791, whose stellar members have mean abundances that place it in the high-
The Astrophysical Journal | 2017
J. G. Fernández-Trincado; Olga Zamora; D. A. García-Hernández; Diogo Souto; F. Dell'Agli; Ricardo P. Schiavon; D. Geisler; B. Tang; Sandro Villanova; Sten Hasselquist; R. E. Mennickent; Katia Cunha; Matthew Shetrone; Carlos Allende Prieto; K. Vieira; Gail Zasowski; Jennifer Sobeck; Christian R. Hayes; Steven R. Majewski; Vinicius M. Placco; Timothy C. Beers; Dominik R. G. Schleicher; A. C. Robin; Sz. Mészáros; Thomas Masseron; Ana G. Pérez; Friedrich Anders; Andres Meza; Alan Alves-Brito; R. Carrera
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The Astronomical Journal | 2015
Christian R. Hayes; Eileen D. Friel; Taleah J. Slack; Owen M. Boberg
, high-[Fe/H] region of the [
The Astrophysical Journal | 2018
Christian R. Hayes; Steven R. Majewski; Sten Hasselquist; Rachael L. Beaton; Katia Cunha; Verne V. Smith; Adrian M. Price-Whelan; Borja Anguiano; Timothy C. Beers; R. Carrera; J. G. Fernández-Trincado; Peter M. Frinchaboy; D. A. García-Hernández; Richard R. Lane; David L. Nidever; Christian Nitschelm; Alexandre Roman-Lopes; Olga Zamora
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The Astronomical Journal | 2017
David L. Nidever; Knut Olsen; Alistair R. Walker; A. Katherina Vivas; R. D. Blum; Catherine C. Kaleida; Yumi Choi; Blair C. Conn; Robert A. Gruendl; Eric F. Bell; Gurtina Besla; Ricardo R. Munoz; Carme Gallart; Nicolas F. Martin; Edward W. Olszewski; Abhijit Saha; Antonela Monachesi; M. Monelli; Thomas J. L. de Boer; L. Clifton Johnson; Dennis Zaritsky; Guy S. Stringfellow; Roeland P. van der Marel; M.-R. L. Cioni; Shoko Jin; Steven R. Majewski; David Martinez-Delgado; Lara Monteagudo; Noelia E. D. Noel; Edouard J. Bernard
/Fe]-[Fe/H] plane. Based on the clusters age (
arXiv: Astrophysics of Galaxies | 2018
J. Ted Mackereth; Ricardo P. Schiavon; Joel Pfeffer; Christian R. Hayes; Jo Bovy; Borja Anguiano; Carlos Allende Prieto; Sten Hasselquist; Jon A. Holtzman; Jennifer A. Johnson; Steven R. Majewski; Robert W. O'Connell; Matthew Shetrone; Patricia B. Tissera; J. G. Fernández-Trincado
\sim 8
arXiv: Astrophysics of Galaxies | 2018
Christian R. Hayes; David R. Law; Steven R. Majewski
Gyr), Galactocentric radius, and height above the Galactic plane, as well as comparable chemistry reported for APOGEE stars in Baades Window, we suggest that the two most likely origins for NGC 6791 are as an original part of the thick-disk, or as a former member of the Galactic bulge. Moreover, because NGC 6791 lies at the \textit{high metallicity end} ([Fe/H]
