Hostname: page-component-54dcc4c588-42vt5 Total loading time: 0 Render date: 2025-09-23T06:36:31.923Z Has data issue: false hasContentIssue false
  • English
  • Français

Models of hot molecular cores

Published online by Cambridge University Press:  25 May 2016

T.J. Millar
T.J. Millar*
Affiliation:
Department of Physics, UMIST, P.O. Box 88, Manchester M60 1QD, England

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 review the properties of hot molecular cores with specific reference to chemical modelling. While most theoretical modelling has been generic, we discuss models for two specific sources, G34.3+0.15 and W3 (H2O). We show that the hot core gas in both these regions has an age of 5 103 — 104 yrs and that the abundances of many molecules are consistent with formation in the gas-phase following evaporation of simple molecular ices from the grains. We end with a discussion of current problems and future directions.

References

Blake, G.A., Sutton, E.C., Masson, C.R., Phillips, T.G., 1987, ApJ, 315, 621.Google Scholar
Brown, P.D., Charnley, S.B., Millar, T.J., 1988, MNRAS, 231, 409.Google Scholar
Brown, P.D., Millar, T.J., 1989a, MNRAS, 237, 661.Google Scholar
Brown, P.D., Millar, T.J., 1989b, MNRAS, 240, 25P.CrossRefGoogle Scholar
Caselli, P., Hasegawa, T.I., Herbst, E., 1993, ApJ, 408, 548.CrossRefGoogle Scholar
Charnley, S.B., 1996, ApJ, in press.Google Scholar
Charnley, S. B., Kress, M. E., Tielens, A. G. G. M., Millar, T. J., 1995, ApJ, 448, 232.Google Scholar
Charnley, S. B., Millar, T. J., 1994, MNRAS, 270, 570.Google Scholar
Charnley, S. B., Tielens, A. G. G. M., Millar, T. J., 1992, ApJ, 399, L71.Google Scholar
de Graauw, Th., et al. 1996, A&A, 315, L345.Google Scholar
Hasegawa, T. I., Herbst, E., 1993, MNRAS, 261, 83.CrossRefGoogle Scholar
Hatchell, J. et al. 1996, A&A, in prep.Google Scholar
Hauschildt, H., Güsten, R., Schilke, P., 1995, in The Physics and Chemistry of Interstellar Molecular Clouds, eds. Winnewisser, G. & Pelz, G.C. (Springer Verlag, Berlin), p. 52.CrossRefGoogle Scholar
Heaton, B. D., Little, L. T., Bishop, I.S., 1989, A&A, 213, 148.Google Scholar
Heaton, B. D., Little, L. T., Yamashita, T., Davies, S. R., Cunningham, C. T., Monteiro, T. S., 1993, A&A, 278, 238.Google Scholar
Helmich, F.P., Jansen, D.J., de Graauw, Th., Groesbeck, T.D., van Dishoeck, E.F., 1994, A&A, 283, 626.Google Scholar
Helmich, F.P., van Dishoeck, E.F., Jansen, D.J., 1996a, A&A, 313, 657.Google Scholar
Helmich, F.P., van Dishoeck, E.F., 1997, A&AS, in press.Google Scholar
Helmich, F.P., Millar, T.J., van Dishoeck, E.F., 1997, A&A, in prep.Google Scholar
Herbst, E., Lee, H.-H., Howe, D.A., Millar, T.J., 1994, MNRAS 268, 335.Google Scholar
Hiraoka, K., Ohashi, N., Kihara, Y., Yamamoto, K., Sato, T., Yamashita, A., 1994, Chem. Phys. Lett., 229, 408.Google Scholar
Husain, D., Norris, P. E., 1978, J. Chem. Soc. Far. Trans., 74, 106.CrossRefGoogle Scholar
Little, L. T., Gibb, A. G., Heaton, B. D., Ellison, B. N., Claude, S. M. X., 1994, MNRAS, 271, 649.CrossRefGoogle Scholar
Macdonald, G.H., Gibb, A.G., Habing, R.J., Millar, T.J., 1996, A&AS, 119, 333.Google Scholar
MacKay, D. D. S., 1995, MNRAS, 274, 694.Google Scholar
Mallard, W. G., Westley, F., Herron, J. T., Hampson, R. F., Frizell, D. H., 1994, NIST Chemical Kinetics Database: Ver. 6.0, National Institute of Standards and Technology, Gaithersburg, MD.Google Scholar
Mauersberger, R., Wilson, T. L., Henkel, C., 1988, A&A, 201, 123.Google Scholar
Millar, T. J., 1992, in Astrochemistry of Cosmic Phenomena, ed. Singh, P. D., (Kluwer Academic Publishers, Dordrecht), p. 121.Google Scholar
Millar, T. J., 1993, in Dust and Chemistry in Astronomy, eds. Millar, T. J. & Williams, D. A., (IoP Publishers, Bristol), p.243.Google Scholar
Millar, T.J., Bennett, A., Herbst, E., 1989, ApJ, 340, 906.Google Scholar
Millar, T.J., Herbst, E., 1990, A&A, 231, 466.Google Scholar
Millar, T.J., Herbst, E., Charnley, S. B., 1991a, ApJ, 369, 147.Google Scholar
Millar, T.J., Leung, C. M., Herbst, E., 1987, A&A, 183, 109.Google Scholar
Millar, T.J., Macdonald, G.H., Gibb, A. G., 1996, A&A, in prep.Google Scholar
Millar, T.J., Macdonald, G.H., Habing, R.J., 1995, MNRAS, 273, 25.CrossRefGoogle Scholar
Olmi, L., Cesaroni, R., Neri, R., Walmsley, C. M., 1996a, A&A, in press.Google Scholar
Olmi, L., Cesaroni, R., and Walmsley, C. M., 1996b, A&A, 307, 599.Google Scholar
Phillips, T. G., van Dishoeck, E. F., Keene, J., 1992, ApJ, 399, 533.Google Scholar
van Dishoeck, E.F., et al., 1996, A&A, 315, L349.Google Scholar