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Magnesium Isotopes in Halo Stars

Meléndez, Jorge and Cohen, Judith G. (2008) Magnesium Isotopes in Halo Stars. In: First stars III. AIP Conference Proceedings. No.990. American Institute of Physics , Melville, NY, pp. 181-183. ISBN 978-0-7354-0509-7.

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We have determined Mg isotope ratios in halo field dwarfs and giants in the globular cluster M71 based on high S/N high spectral resolution (R = 10^5) Keck HIRES spectra. Unlike previous claims of an important contribution from intermediate‐mass AGB stars to the Galactic halo, we find that our ^(26)Mg/^(24) Mg ratios can be explained by massive stars.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Meléndez, Jorge0000-0002-4933-2239
Cohen, Judith G.0000-0002-8039-4673
Additional Information:© 2008 American Institute of Physics. Published online 11 March 2008. We thank D. Yong and W Aoki for kindly providing a Subaru spectrum of M71 A4. JM acknowledges partial support from the Australian Research Council to Martin Asplund. JGC is grateful for partial support to NSF grant AST-0507219.
Funding AgencyGrant Number
Australian Research CouncilUNSPECIFIED
Subject Keywords:halo stars; isotopic abundances; globular clusters: M71
Series Name:AIP Conference Proceedings
Issue or Number:990
Classification Code:PACS: 97.10.Tk; 98.20.Gm; 98.35.Bd; 98.35.Gi
Record Number:CaltechAUTHORS:20160422-103841891
Persistent URL:
Official Citation:Magnesium Isotopes in Halo Stars Meléndez, Jorge and Cohen, Judith G., AIP Conference Proceedings, 990, 181-183 (2008), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66404
Deposited By: Tony Diaz
Deposited On:22 Apr 2016 20:24
Last Modified:02 Mar 2023 22:39

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