Hostname: page-component-5f56664f6-6m42z Total loading time: 0 Render date: 2025-05-07T07:21:49.568Z Has data issue: false hasContentIssue false
  • English
  • Français

Hot molecular cores, sites of high mass star formation

Published online by Cambridge University Press:  25 May 2016

Susana Lizano  and
Mayra Osorio
Susana Lizano
Affiliation:
Instituto de Astronomía, UNAM, 04510 México D. F., México
Mayra Osorio
Affiliation:
Instituto de Astronomía, UNAM, 04510 México D. F., México

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We model the flux-density distribution of hot molecular cores as in-falling envelopes of gas and dust onto a central massive star. The envelopes are heated by both the stellar luminosity and the accretion luminosity. We find that, in order to reproduce the observed fluxes, these objects require high mass accretion rates Ṁ ≃ 10−4−3 M⊙yr−1 infalling onto central late B-type stars. We discuss the implications of this intense accretion phase on the formation of massive stars.

Type
Part 5. Wolf-Rayet stars and other massive stars in starburst galaxies: the case of Wolf-Rayet galaxies (integrated spectra)
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 559 - 567
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Adams, F.C., Lada, C.J., Shu, F.H. 1987, ApJ 312, 788 Google Scholar
Adams, F.C., Shu, F.H. 1985, ApJ 296, 655 Google Scholar
Adams, F.C., Shu, F.H. 1986, ApJ 308, 836 Google Scholar
Beech, M., Mitalas, R. 1994, ApJS 95, 517 Google Scholar
Bernasconi, P.A., Maeder, A. 1996, A&A 307, 829 Google Scholar
Churchwell, E. 1990, The A&A Rev 2, 79 Google Scholar
Hunter, T.R., Neugebauer, G., Benford, D.J., Matthews, K., Lis, D.C., Serabyn, E., Phillips, T.G. 1998, ApJ 493, L97 Google Scholar
Jijina, J., Adams, F.C. 1996, ApJ 462, 874 Google Scholar
Kahn, F.D. 1974, A&A 37, 149 Google Scholar
Kaufman, M.J., Hollenbach, D.J., Tielens, A.G.G.M. 1998, ApJ 497, 276 Google Scholar
Kenyon, S., Calvet, N., Hartmann, L. 1993, ApJ 414, 676 Google Scholar
Kurtz, S., Cesaroni, R., Churchwell, E., Hofner, P., Walmsley, C.M. 1999, in: Mannings, V., Boss, A.P. & Russell, S.S. (eds.) Protostars & Planets IV (Tucson: Univ. of Arizona Press), in press Google Scholar
Lizano, S., Shu, F.H. 1989, ApJ 342, 834 Google Scholar
Myers, P.C., Fuller, G.A. 1992, ApJ 396, 631 CrossRefGoogle Scholar
Mihalas, D. 1978, Stellar Atmospheres (New York: Freeman, 2nd edition)Google Scholar
McLaughlin, D.E., Pudritz, R.E. 1996, ApJ 469, 194 Google Scholar
McLaughlin, D.E., Pudritz, R.E. 1997, ApJ 476, 750 Google Scholar
Osorio, M., Lizano, S., D'Alessio, P. 1999, ApJ submitted Google Scholar
Shu, F.H. 1977, ApJ 214, 488 CrossRefGoogle Scholar
Stahler, S.W., Shu, F.H., Taam, R.E. 1980, ApJ 241, 637 CrossRefGoogle Scholar
Stahler, S.W., Palla, F., Salpeter, E.E. 1986, ApJ 302, 590 Google Scholar
Testi, L., Felli, M., Persi, P., Roth, M. 1998, A&A, 330, 696 (T98) Google Scholar
Thompson, R.I. 1984, ApJ 255, 103 Google Scholar
Walmsley, C.M. 1995, RevMexAA-SC 1, 137 Google Scholar
Wolfire, M.G., Cassinelli, J.P. 1987, ApJ 319, 850 CrossRefGoogle Scholar