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The stellar initial mass function in the early universe revealed from old stellar populations in our neighbourhood

Published online by Cambridge University Press:  17 July 2013

Yutaka Komiya ,
Shimako Yamada ,
Takuma Suda  and
Masayuki Y. Fujimoto
Yutaka Komiya
Affiliation:
National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
Shimako Yamada
Affiliation:
Dept. of Cosmophysics, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
Takuma Suda
Affiliation:
National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, Japan
Masayuki Y. Fujimoto
Affiliation:
Dept. of Cosmophysics, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
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Abstract

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We present a new method to investigate the IMF in the early universe from observations of extremely metal-poor (EMP) stars. EMP stars are the low-mass survivors of stars which are formed in the early universe. We can give constraints on the IMF from statistics of the elemental abundances of the EMP stars in the Galactic halo.

Keywords

stars: abundancesstars: Population IIbinariesGalaxy: haloGalaxy: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 322
Copyright
Copyright © International Astronomical Union 2013 

References

Komiya, Y.et al. 2007, ApJ, 658, 367CrossRefGoogle Scholar
Komiya, Y., Suda, T., & Fujimoto, Y. M. 2009, ApJ, 694, 1577CrossRefGoogle Scholar
Umeda, H. & Nomoto, K. 2002, ApJ, 565, 385CrossRefGoogle Scholar