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Submm Observations of Prestellar Condensations: Probing the Initial Conditions for the IMF

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

Abstract

Several (sub)millimeter continuum surveys of nearby protoclusters have revealed prestellar condensations that seem to be the direct progenitors of individual stars and whose mass distribution resembles the IMF. In a number of cases, small internal and relative motions are measured for these protocluster condensations, indicating they are much less turbulent than their ambient cloud and do not have time to interact before collapsing to (proto)stars. These findings suggest that the IMF is at least partly determined by pre-collapse cloud fragmentation and that the main key to understanding the origin of stellar masses lies in the physical mechanisms responsible for the formation and decoupling of prestellar condensations within molecular clouds.

Keywords

Mass Distribution Star Formation Velocity Dispersion Molecular Cloud Stellar Mass 
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.

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References

  1. Adams F.C., & Fatuzzo, M. 1996, ApJ, 464, 256CrossRefADSGoogle Scholar
  2. Alves, J.F., Lada, C.J., & Lada, E.A. 2001, Nature, 409, 159CrossRefADSGoogle Scholar
  3. André, P.,Ward-Thompson, D., & Barsony, M. 2000, in Protostars and Planets IV, Eds. V. Mannings, A.P. Boss, & S.S. Russell (Univ. of Arizona Press, Tucson), p. 59Google Scholar
  4. André, P. 2001, in The Promise of the Herschel Space Observatory, Eds. G.L. Pilbratt et al., ESA SP-460, p. 169Google Scholar
  5. Bacmann, A., André, P., Puget, J.-L., Abergel, A., Bontemps, S., & Ward-Thompson, D. 2000, A&A, 361, 555ADSGoogle Scholar
  6. Bate, M.R., Bonnell, I.A., & Bromm, V. 2003, MNRAS, 339, 577CrossRefADSGoogle Scholar
  7. Belloche, A., André, P., & Motte, F. 2001, in From Darkness to Light, Eds. T. Montmerle & P. André, ASP Conf. Ser., 243, p. 313ADSGoogle Scholar
  8. Bergin, E.A., & Langer, W.D. 1997, ApJ, 486, 316CrossRefADSGoogle Scholar
  9. Blitz, L. 1993, in Protostars & Planets III, Eds. E.H. Levy & J.I. Lunine (Tucson: Univ. of Arizona Press), p. 125Google Scholar
  10. Bonnell, I.A., Bate, M. R., Clarke, C. J. & Pringle, J.E. 2001, MNRAS, 323, 785CrossRefADSGoogle Scholar
  11. Bontemps, S., André, P., & Kaas, A.A. 2001, A&A, 372, 173CrossRefADSGoogle Scholar
  12. Bouwman, J., André, P., & Galli, D. 2004, in preparationGoogle Scholar
  13. Chabrier, G. 2003, ApJ, 586, L133CrossRefADSGoogle Scholar
  14. Elmegreen, B. 2001, in From Darkness to Light, Eds. T. Montmerle & P. André, ASP Conf. Ser., 243, p. 255ADSGoogle Scholar
  15. Evans, N.J. 1999, ARA&A, 37, 311CrossRefADSGoogle Scholar
  16. Evans, N.J. II, Rawlings, J.M.C., Shirley, Y.L., & Mundy, L.G. 2001, ApJ, 557, 193CrossRefADSGoogle Scholar
  17. Goodman, A.A., Barranco, J.A., Wilner, D.J., & Heyer, M.H. 1998, ApJ, 504, 223CrossRefADSGoogle Scholar
  18. Jijina, J., Myers, P.C., & Adams, F.C. 1999, ApJS, 125, 161CrossRefADSGoogle Scholar
  19. Johnstone, D., Wilson, C. D., Moriarty-Schieven, G., et al. 2000, ApJ, 545, 327CrossRefADSGoogle Scholar
  20. Klessen, R.S., & Burkert, A. 2000, ApJS, 128, 287CrossRefADSGoogle Scholar
  21. Klessen, R.S., Heitsch, F., & Mac Low, M.-M. 2000, ApJ, 535, 887CrossRefADSGoogle Scholar
  22. Kroupa, P., Tout, C. A., & Gilmore, G. 1993, MNRAS, 262, 545ADSGoogle Scholar
  23. Larson, R.B., 1981, MNRAS, 194, 809ADSGoogle Scholar
  24. Larson, R.B. 1985, MNRAS, 214, 379ADSGoogle Scholar
  25. Loren, R.B., Wootten, A., & Wilking, B.A. 1990, ApJ, 365, 229CrossRefADSGoogle Scholar
  26. Luhman, K., Rieke, G.H., Young, E.T. et al. 2000, ApJ, 540, 1016CrossRefADSGoogle Scholar
  27. Motte, F., André, P., & Neri, R. 1998, A&A, 336, 150 (MAN98)ADSGoogle Scholar
  28. Motte, F., André, P., Ward-Thompson, D., & Bontemps, S. 2001, A&A, 372, L41CrossRefADSGoogle Scholar
  29. Mouschovias, T.M., & Ciolek, G.E. 1999, in The Origin of Stars and Planetary Systems, Eds. C.J. Lada & N.D. Kylafis, p. 305Google Scholar
  30. Myers, P.C. 1998, ApJL, 496, L109CrossRefADSGoogle Scholar
  31. Nakano, T. 1998, ApJ, 494, 587CrossRefADSGoogle Scholar
  32. Onishi, T., Mizuno, A., Kawamura, A., Tachihara, K. & Fukui, Y. 2002, ApJ, 575, 950CrossRefADSGoogle Scholar
  33. Ossenkopf, V., & Henning, Th. 1994, A&A, 291, 943ADSGoogle Scholar
  34. Padoan, P., & Nordlund, A. 2002, ApJ, 576, 870CrossRefADSGoogle Scholar
  35. Pilbratt, G., Cernicharo, J., Heras, A.M., Prusti, T., & Harris, R. 2001, The Promise of the Herschel Space Observatory (ESA, Noordwijk), ESA SP-460Google Scholar
  36. Salpeter, E.E. 1955, ApJ, 121, 161CrossRefADSGoogle Scholar
  37. Shu, F.H., Adams, F.C., & Lizano, S. 1987, ARA&A 25, 23CrossRefADSGoogle Scholar
  38. Shu, F.H., Li, Z.-Y., & Allen, A. 2004, ApJ, 601, 930CrossRefADSGoogle Scholar
  39. Stamatellos, D., & Whitworth, A.P. 2003, A&A, 407, 941CrossRefADSGoogle Scholar
  40. Starck, J.L., Murtagh, F., & Bijaoui, A. 1998, Image Processing and Data Analysis: The Multiscale Approach, Cambridge University Press (Cambridge, UK)CrossRefGoogle Scholar
  41. Tafalla, M., Myers, P.C., Caselli, P., Walmsley, C.M., & Comito, C. 2002, ApJ, 569, 815CrossRefADSGoogle Scholar
  42. Testi, L., & Sargent, A.I. 1998, ApJL, 508, L91CrossRefADSGoogle Scholar
  43. Troland, T.H., Crutcher, R.M., Goodman, A.A., Heiles, C., Kazès, I., & Myers, P.C. 1996, ApJ, 471, 302CrossRefADSGoogle Scholar
  44. Ward-Thompson, D., Scott, P.F., & Hills, R.E., & André, P. 1994, MNRAS, 268, 276ADSGoogle Scholar
  45. Williams, J.P., de Geus, E.J., & Blitz, L. 1994, ApJ, 428, 693CrossRefADSGoogle Scholar
  46. Wootten, A. 2001, Science with the Atacama Large Millimeter Array, ASP Conf. Ser., vol. 235Google Scholar

Copyright information

© Springer 2005

Authors and Affiliations

  • Philippe André
    • 1
  1. 1.CEA Saclay, Service d’AstrophysiqueFrance

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