Advertisement

Constraints on the IMF in Low Metallicity and Popiii Environments

  • Daniel Schaerer
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 327)

Abstract

We summarize and discuss various constraints on the IMF at very low or zero metallicity. Taken together the indications from stars, high-z galaxies, and indirect constraints show some possible deviations (favoring massive stars) from a Salpeter like IMF. However, the empirical evidence remains presently arguably weak.

Keywords

Star Formation Massive Star Halo Star Galaxy Spectrum Star Formation Rate Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ajiki, M., et al., 2002, ApJ, 576, L25CrossRefADSGoogle Scholar
  2. Ajiki, M., et al., 2004, PASJ, 56, 597ADSGoogle Scholar
  3. Asplund, M., et al., 2004, A&A, 417, 751CrossRefADSGoogle Scholar
  4. Bouwens, R.J., et al., 2004a, ApJ, 606, L25CrossRefADSGoogle Scholar
  5. Bouwens, R.J., et al., 2004b, ApJ, in press (astro-ph/0409488)Google Scholar
  6. Cayrel, R., et al., 2004, A&A, 416, 1117CrossRefADSGoogle Scholar
  7. Christlieb, N., et al., 2002, Nature, 419, 904CrossRefADSGoogle Scholar
  8. Ciardi, B., et al., 2003, MNRAS, 344, L7CrossRefADSGoogle Scholar
  9. Dawson, S., et al., 2004, ApJ, in press (astro-ph/0409090)Google Scholar
  10. Haiman, Z., Holder, G.P., 2003, ApJ, 595, 1CrossRefADSGoogle Scholar
  11. Heckman, T.M., et al., 1998, ApJ, 503, 646CrossRefADSGoogle Scholar
  12. Heger, A., Woosley, S., 2002, ApJ, 567, 532CrossRefADSGoogle Scholar
  13. Heger, A., et al., 2002, in Lighthouses of the Universe, MPA/ESO, 369Google Scholar
  14. Hernandez, J., Ferrara, A., 2001, MNRAS, 324, 848CrossRefGoogle Scholar
  15. Hu, E., et al., 2004, AJ, 127, 563CrossRefADSGoogle Scholar
  16. Kogut, A., 2003, ApJS, 148, 161CrossRefADSGoogle Scholar
  17. Leitherer, C., 1998, in The Stellar Initial Mass Function, ASP Conf. Series, Vol. 142, 61ADSGoogle Scholar
  18. Malhotra, S., Rhoads, J.E., 2002, ApJ, 565, L71CrossRefADSGoogle Scholar
  19. Ober, W.W., et al., 1993, A&A, 119, 61ADSGoogle Scholar
  20. Omukai, K., 2000, ApJ, 534, 809CrossRefADSGoogle Scholar
  21. Pelló, R., et al., 2004, A&A, 416, L35CrossRefADSGoogle Scholar
  22. Pelló, R., et al., 2004, IAU Symp 225, in press (astro-ph/0410132)Google Scholar
  23. Ricotti, M., et al., 2004, MNRAS, 352, L21CrossRefADSGoogle Scholar
  24. Rhoads, J.E., et al., 2003, AJ, 125, 1006CrossRefADSGoogle Scholar
  25. Salvaterra, R., Ferrara, A., 2003, MNRAS, 339, 973CrossRefADSGoogle Scholar
  26. Santos, M.R., et al., 2002, MNRAS, 336, 1082CrossRefADSGoogle Scholar
  27. Scannapieco, E., et al., 2003, ApJ, 589, 35CrossRefADSGoogle Scholar
  28. Schaerer, D., 2002, A&A, 382, 28CrossRefADSGoogle Scholar
  29. Schaerer, D., 2003a, in A massive star odyssey IAU Symp. 212, 642ADSGoogle Scholar
  30. Schaerer, D., 2003b, A&A, 397, 527CrossRefADSGoogle Scholar
  31. Schneider, R., et al., 2004, MNRAS, submittedGoogle Scholar
  32. Stanway et al., 2003, MNRAS, 342, 439CrossRefADSGoogle Scholar
  33. Tumlinson, J., Giroux, M.L., Shull, J.M., 2001, ApJ, 550, L1CrossRefADSGoogle Scholar
  34. Tumlinson, J., et al., 2004, ApJ, 612, 602CrossRefADSGoogle Scholar
  35. Wang, J.X., et al., 2004, ApJ, 608, L21CrossRefADSGoogle Scholar

Copyright information

© Springer 2005

Authors and Affiliations

  • Daniel Schaerer
    • 1
  1. 1.Geneva ObservatorySauvernySwitzerland

Personalised recommendations