The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars

Cohen, Judith G. and Shectman, Stephen and Thompson, Ian and McWilliam, Andrew and Christlieb, Norbert and Meléndez, Jorge and Zickgraf, Franz-Josef and Ramirez, Solange and Swenson, Amber (2005) The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars. In: From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution. IAU Symposium Proceedings Series. Vol.1. No.228. Cambridge University Press , Cambridge, pp. 213-218. ISBN 9780521851992. https://resolver.caltech.edu/CaltechAUTHORS:20190522-103855423

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Abstract

We discuss the fraction of carbon stars (C-stars) and of C-enhanced stars among samples of candidate extremely metal poor (EMP: [Fe/H] ⩽−3.0 dex) stars selected from the Hamburg/ESO Survey (HES), obtaining a total for C-rich stars with [C/Fe] ⩾ +1.0 dex of 14.4±4%. We also present the key results of detailed abundance analyses of a sample of 14 C-stars selected in this way.

Item Type:

Book Section

Related URLs:

URL	URL Type	Description
https://doi.org/10.1017/s1743921305005570	DOI	Article
https://arxiv.org/abs/astro-ph/0506745	arXiv	Discussion Paper

ORCID:

Author	ORCID
Cohen, Judith G.	0000-0002-8039-4673
Christlieb, Norbert	0000-0002-4043-2727
Meléndez, Jorge	0000-0002-4933-2239

Additional Information:

© 2005 International Astronomical Union. Published online: 23 December 2005. We are very greatful to M. Briley for slightly extending his published grid of predicted CH indices for EMP/VMP stars. JGC and JM are grateful for partial support from NSF grant AST-0205951. JGC is grateful for support from the Ernest Fullam Award of the Dudley Observatory which helped initiate this work. The work of NC and FJZ is supported by Deutsche Forschungsgemeinschaft (grants Ch 214/3 and Re 353/44). NC acknowledges support through a Henri Chretien International Research Grant administered by the American Astronomical Society.

Funders:

Funding Agency	Grant Number
NSF	AST-0205951
Dudley Observatory	UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)	Ch 214/3
Deutsche Forschungsgemeinschaft (DFG)	Re 353/44
American Astronomical Society	UNSPECIFIED

Subject Keywords:

Stars: carbon, stars: abundances, stars: chemically peculiar

Series Name:

IAU Symposium Proceedings Series

Issue or Number:

228

Record Number:

CaltechAUTHORS:20190522-103855423

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20190522-103855423

Official Citation:

Cohen, J., Shectman, S., Thompson, I., McWilliam, A., Christlieb, N., Melendez, J., . . . Swenson, A. (2005). The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars. Proceedings of the International Astronomical Union, 1(S228), 213-218. doi:10.1017/S1743921305005570

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No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

95694

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

22 May 2019 21:51

Last Modified:

09 Mar 2020 13:19

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