Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-25T12:52:36.273Z Has data issue: false hasContentIssue false
  • English
  • Français

Molecular Line Studies of Dense Core Motions

Published online by Cambridge University Press:  07 August 2017

Yuefang Wu
Yuefang Wu*
Affiliation:
CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 Geophysics Department, Peking University, Beijing 100871

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.

Molecular lines have revealed various supporting motions in dense cores. Line widths and emission region sizes of NH3 and CS in the same kind of cores or of the same line in cores with or without sources are different and can not be explained with the line width- size relationship. Outflows in dense cores show rich characteristics which can account for the NH3 emission difference between the two kinds of the cores; CS emission is consistent with the chemical effects in shocked regions. Rotation exists in both kinds of cores and may be related to the observed polarities and collimations of outflows.

Type
Quiescent Clouds and Regions of Star Formation
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 217 - 222
Copyright
Copyright © Kluwer 1992 

References

REFERENCES

Bally, J. 1982, Ap. J., 261, 558.CrossRefGoogle Scholar
Batrla, W., and Menten, K. M. 1985, Ap. J., (Letters), 298, L19.Google Scholar
Beichman, C. A., Myers, P. C., Emerson, J. P., Harris, S., Mathieu, R., Benson, P. J., and Jennings, R. E. 1986, Ap. J., 307, 337.CrossRefGoogle Scholar
Boss, A.P. 1987, Ap. J., 316, 721.Google Scholar
Canto, J., Rodriguez, L. F., Barral, J. F., and Carral, P. 1981, Ap. J., 244, 102.CrossRefGoogle Scholar
Clark, F. O., and Johnson, D. R. 1981, Ap. J., 247, 104.CrossRefGoogle Scholar
Frerking, M. A., and Langer, W. D. 1982, Ap. J., 256, 523.Google Scholar
Gusten, R., Chini, R., and Neckel, T. 1984, Astr. Ap., 138, 205.Google Scholar
Hartquist, T. W., Oppenheimer, M., and Dalgano, A. 1980, Ap. J., 236, 182.Google Scholar
Hasegawa, T., Kaifu, N., Inatani, J., Morimoto, M., Chikada, Y., Hirabayashi, H., Iwashita, H., Morita, K., Tojo, A., and Akabane, K. 1984, Ap. J., 283, 117.CrossRefGoogle Scholar
Hayashi, M., Omodaka, T., Hasegawa, T., and Suzuki, S. 1985, Ap. J., 288, 170.Google Scholar
Heyer, M. H., Snell, R. L., Goldsmith, P. F., Strom, S. E., and Strom, K. M. 1986, Ap. J., 308, 134.CrossRefGoogle Scholar
Heyer, M. H., Snell, R. L., Goldsmith, P. F., and Myers, P. C. 1987, Ap. J., 321, 370.Google Scholar
Kaifu, N., Suzuki, S., Hasegawa, T., Morimoto, M., Inatani, J., Nagane, K., Miyazawa, K., Chikada, Y., Kanzawa, T., and Akabane, K. 1984, Astr. Ap., 134, 7.Google Scholar
Kawabe, R., Ogawa, H., Fukui, Y., Takano, T., Takaba, H., Fujimoto, Y., Sugitani, K., and Fujima, M. 1984, Ap. J. (Letters), 282, L73.CrossRefGoogle Scholar
Larson, R. B. 1981, M. N. R. A. S., 194, 809.Google Scholar
Lichten, S. M. 1982, Ap. J., 253, 593.CrossRefGoogle Scholar
Little, L. T., Dent, W. R. F., Heaton, B., Davies, S. R., White, G. J. 1985, M. N. R. A. S., 217, 227.Google Scholar
Mao, X., Wu, Y., Hao, J., and Hou, M. 1989, Acta. Scientiarum Naturalium, U. Pekinensis, 25, 505.Google Scholar
Mathieu, R. D., Bensan, P. J., Fuller, G. A., Myers, P. C., and Schild, R. E. 1988, Ap. J. 330, 385.CrossRefGoogle Scholar
Matthews, N., and Little, L.T. 1983, M. N. R. A. S., 205, 123.CrossRefGoogle Scholar
Menten, K. M., and Walmsley, C. M. 1985, Astr. Ap., 146, 369.Google Scholar
Mezger, P. G., and Smith, L. F. 1977, in IAU Symposium No. 75, P. 133.Google Scholar
Mundt, R. 1988 in Formation and Evolution of Low Mass Stars , ed. Dupree, A. K., Lago, M. T. V., P257 CrossRefGoogle Scholar
Myers, P. C. 1983, Ap. J., 270, 105.Google Scholar
Myers, P. C., and Benson, P. J. 1983, Ap. J., 266, 309.Google Scholar
Myers, P. C., Heyer, M., Snell, R. L., and Goldsmith, P. F. 1988, Ap. J., 324, 907.Google Scholar
Myers, P. C., Linke, R. A., and Benson, P. J. 1983, Ap. J., 264, 517.Google Scholar
Ostriker, J. P., Richstone, D. O., and Thuan, T. X. 1974, Ap. J. (Letters), 188, L87 Google Scholar
Stocke, J.T., Hartigan, P. M., Strom, S. E., Strom, K. M., Anderson, E. R. 1988, Ap. J. Suppl., 68, 279 CrossRefGoogle Scholar
Takano, T., Stutzki, J., Fukui, Y., and Winnewisser, G. 1986, Astr. Ap., 158, 14.Google Scholar
Thronson, H. A. Jr., and Lada, C. J. 1984, Ap. J., 284, 135.Google Scholar
Torrelles, J. M., Canto, J., Rodriguez, L. F., Ho, P.T.P., Moran, J. M. 1985, Ap. J. (Letters) 294, L117 Google Scholar
Torrelles, J. M., Ho, P. T. P., Rodriguez, L. F., and Canto, J. 1986a, Ap. J., 305, 721.CrossRefGoogle Scholar
Torrelles, J. M., Ho, P. T. P., Moran, J. M., Rodriguez, L. F., and Canto, J. 1986b, Ap. J., 307, 787.CrossRefGoogle Scholar
Torrellas, J. M., Rodriguez, L. F., Canto, J., Carral, P., Marcaide, J., Moran, J. M., and Ho, P. T. P. 1983, Ap. J., 274, 214 Google Scholar
Wu, Y. 1990, Progress in astronomy , 8, 291 Google Scholar
Wu, Y., Zhou, S., and Evans, N. J. II 1990, in preparation.Google Scholar
Wu, Y., Huang, M., He, J. 1991, in The Stellar Populations of Galaxies , ed. by Barbuy, B., in press.Google Scholar
Zhou, S., Wu, Y., Evans, N. J. II, Fuller, G. A., and Myers, P. C. 1989, Ap. J., 346, 168.Google Scholar