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Your search keyword '"Catherine C. Kaleida"' showing total 5 results
Start Over Author "Catherine C. Kaleida" Publisher iop publishing
5 results on '"Catherine C. Kaleida"'

1. Spectroscopic Validation of Low-metallicity Stars from RAVE.

Author

Vinicius M. Placco, Timothy C. Beers, Rafael M. Santucci, Julio Chanamé, María Paz Sepúlveda, Johanna Coronado, Sean D. Points, Catherine C. Kaleida, Silvia Rossi, Georges Kordopatis, Young Sun Lee, Gal Matijevič, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Kaitlin C. Rasmussen, Ian U. Roederer, Charli M. Sakari, and Devin D. Whitten

Published
2018
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2. RAVE J203843.2–002333: The First Highly R-process-enhanced Star Identified in the RAVE Survey.

Author

Vinicius M. Placco, Erika M. Holmbeck, Anna Frebel, Timothy C. Beers, Rebecca A. Surman, Alexander P. Ji, Rana Ezzeddine, Sean D. Points, Catherine C. Kaleida, Terese T. Hansen, Charli M. Sakari, and Andrew R. Casey

Subjects
NEUTRON stars, SUPERNOVAE, DWARF galaxies, STELLAR evolution, RADIOISOTOPES
Abstract

We report the discovery of RAVE J203843.2−002333, a bright (V = 12.73), very metal-poor ( = −2.91), r-process-enhanced ( = +1.64 and = −0.81) star selected from the RAVE survey. This star was identified as a metal-poor candidate based on its medium-resolution (R ∼ 1600) spectrum obtained with the KPNO/Mayall Telescope, and followed up with high-resolution (R ∼ 66,000) spectroscopy with the Magellan/Clay Telescope, allowing for the determination of elemental abundances for 24 neutron-capture elements, including thorium and uranium. RAVE J2038−0023 is only the fourth metal-poor star with a clearly measured U abundance. The derived chemical abundance pattern exhibits good agreement with those of other known highly r-process-enhanced stars, and evidence suggests that it is not an actinide-boost star. Age estimates were calculated using U/X abundance ratios, yielding a mean age of 13.0 ± 1.1 Gyr. [ABSTRACT FROM AUTHOR]

Published
2017
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3. SMASH 1: A VERY FAINT GLOBULAR CLUSTER DISRUPTING IN THE OUTER REACHES OF THE LMC?

Author

Nicolas F. Martin, Valentin Jungbluth, David L. Nidever, Eric F. Bell, Gurtina Besla, Robert D. Blum, Maria-Rosa L. Cioni, Blair C. Conn, Catherine C. Kaleida, Carme Gallart, Shoko Jin, Steven R. Majewski, David Martinez-Delgado, Antonela Monachesi, Ricardo R. Muñoz, Noelia E. D. Noël, Knut Olsen, Guy S. Stringfellow, Roeland P. van der Marel, and A. Katherina Vivas

Published
2016
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5. HYDRA II: A FAINT AND COMPACT MILKY WAY DWARF GALAXY FOUND IN THE SURVEY OF THE MAGELLANIC STELLAR HISTORY.

Author

Nicolas F. Martin, David L. Nidever, Gurtina Besla, Knut Olsen, Alistair R. Walker, A. Katherina Vivas, Robert A. Gruendl, Catherine C. Kaleida, Ricardo R. Muñoz, Robert D. Blum, Abhijit Saha, Blair C. Conn, Eric F. Bell, You-Hua Chu, Maria-Rosa L. Cioni, Thomas J. L. de Boer, Carme Gallart, Shoko Jin, Andrea Kunder, and Steven R. Majewski

Published
2015
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