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Theoretical stellar ΔY/ΔO in the early Universe

Published online by Cambridge University Press:  23 April 2010

Sylvia Ekström ,
Georges Meynet ,
André Maeder ,
Cristina Chiappini ,
Cyril Georgy  and
Raphael Hirschi
Sylvia Ekström
Affiliation:
Astronomical Observatory of the Geneva University, Maillettes 51 - Sauverny, 1290 Versoix GE, Switzerland email: Sylvia.Ekstrom@unige.ch
Georges Meynet
Affiliation:
Astronomical Observatory of the Geneva University, Maillettes 51 - Sauverny, 1290 Versoix GE, Switzerland email: Sylvia.Ekstrom@unige.ch
André Maeder
Affiliation:
Astronomical Observatory of the Geneva University, Maillettes 51 - Sauverny, 1290 Versoix GE, Switzerland email: Sylvia.Ekstrom@unige.ch
Cristina Chiappini
Affiliation:
Astronomical Observatory of the Geneva University, Maillettes 51 - Sauverny, 1290 Versoix GE, Switzerland email: Sylvia.Ekstrom@unige.ch Osservatorio Astronomico di Trieste, OAT/INAF, Via G. B. Tiepolo 11, 34131 Trieste TS, Italy
Cyril Georgy
Affiliation:
Astronomical Observatory of the Geneva University, Maillettes 51 - Sauverny, 1290 Versoix GE, Switzerland email: Sylvia.Ekstrom@unige.ch
Raphael Hirschi
Affiliation:
Astrophysics group, Keele University, Lennard-Jones Lab., Keele, ST5 5BG, UK IPMU, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
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Abstract

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Population III stars initiated the chemical enrichment of the Universe. Chemical evolution models seem to favour fast rotators among the very low-metallicity population. When a star rotates fast, it ejects significant quantities of He and its nucleosynthesic products are modified compared to the case without rotation. The value of ΔY/ΔO is explored from a theoretical point of view through stellar models of zero- or very low-metallicity.

Keywords

nucleosynthesisstars: rotationearly universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S268: Light Elements in the Universe , November 2009 , pp. 447 - 452
Copyright
Copyright © International Astronomical Union 2010

References

Bromm, V. & Larson, R. B. 2004, ARA&A 42, 79Google Scholar
Chiappini, C., Ekström, S., Meynet, G., Hirschi, R., Maeder, A., & Charbonnel, C. 2008, A&A 479, L9Google Scholar
Chiappini, C., Hirschi, R., Meynet, G., Ekström, S., Maeder, A., & Matteucci, F. 2006, A&A 449, L27Google Scholar
Ekström, S., Meynet, G., Chiappini, C., Hirschi, R., & Maeder, A. 2008, A&A 489, 685Google Scholar
Heger, A., Fryer, C. L., Woosley, S. E., Langer, N., & Hartmann, D. H. 2003, ApJ 591, 288Google Scholar
Hirschi, R. 2007, A&A 461, 571Google Scholar
Hirschi, R., Meynet, G., & Maeder, A. 2004, A&A 425, 649Google Scholar
Iocco, F., Mangano, G., Miele, G., Pisanti, O., & Serpico, P. D. 2007, Phys. Rev. D 75 (8), 087304CrossRefGoogle Scholar
Izotov, Y. I., Thuan, T. X., & Stasińska, G. 2007, ApJ 662, 15CrossRefGoogle Scholar
Kudritzki, R. P. 2002, ApJ 577, 389Google Scholar
Maeder, A. 1992, A&A 264, 105Google Scholar
Marigo, P., Chiosi, C., & Kudritzki, R.-P. 2003, A&A 399, 617Google Scholar
Meynet, G., Ekström, S., & Maeder, A. 2006, A&A 447, 623Google Scholar
Meynet, G. & Maeder, A. 2002, A&A 390, 561Google Scholar
Miller, G. E. & Scalo, J. M. 1979, ApJS 41, 513CrossRefGoogle Scholar
Nakamura, F. & Umemura, M. 1999, ApJ 515, 239CrossRefGoogle Scholar
Nakamura, F. & Umemura, M. 2001, ApJ 548, 19CrossRefGoogle Scholar
Olive, K. A. & Skillman, E. D. 2004, ApJ 617, 29CrossRefGoogle Scholar
Peimbert, M., Luridiana, V., & Peimbert, A. 2007, ApJ 666, 636Google Scholar
Peimbert, M., Peimbert, A., Luridiana, V., & Ruiz, M. T. 2003, in Perez, E., Delgado, R. M. Gonzalez, & Tenorio-Tagle, G. (eds.), Star Formation Through Time, Vol. 297 of Astronomical Society of the Pacific Conference Series, p. 81Google Scholar
Pignatari, M., Gallino, R., Meynet, G., Hirschi, R., Herwig, F., & Wiescher, M. 2008, ApJL 687, L95Google Scholar
Salpeter, E. E. 1955, ApJ 121, 161Google Scholar
Schwarzschild, M. 1958, Structure and evolution of the stars.Google Scholar
Talon, S. & Zahn, J.-P. 1997, A&A 317, 749Google Scholar
Vink, J. S., de Koter, A., & Lamers, H. J. G. L. M. 2001, A&A 369, 574Google Scholar
Zahn, J.-P. 1992, A&A 265, 115Google Scholar