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Mass Outflow in Molecular Clouds: A New Phase in the Evolution of Newly-Formed Stars?

Published online by Cambridge University Press:  30 March 2016

R. Genzel  and
D. Downes
R. Genzel
Affiliation:
Dept. of Physics, University of California, Berkeley
D. Downes
Affiliation:
Institut de Radio Astronomie Millimétrique, Grenoble

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Molecular gas with velocity dispersions exceeding 100 km s-1 toward dense, interstellar clouds was discovered by microwave observers about a decade ago. It has now been established that this high velocity gas is a result of violent mass outflows (winds) originating from T-Tau stars, compact infrared sources or ultra-compact HII regions at the cores of the clouds. The mass outflow phenomena occur in regions of star formation covering five orders of magnitude in luminosity, and are of long duration . The observations suggest that violent mass loss is a new, important phase in the pre-main sequence evolution of newly-formed stars more massive than a few solar masses. The impact of the flows on the energy balance and dynamical stability of molecular clouds may be substantial. This review is mainly a summary of the observational facts, and gives a description of the physical conditions in an outflow zone. The impact of the flows on molecular clouds is discussed. Recent reviews of the outflow phenomena can also be found in (1, 2, 3, ).

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 6: Highlights of Astronomy. As presented at the XVIIIth General Assembly of the IAU, 1982 , 1983 , pp. 686 - 706
Copyright
Copyright © Reidel 1983

References

1. Genzel, R. and Dowries, D. 1982, in “Regions of Recent Star Formation”, eds. Roger, R.S. and Dewdney, P.E., Reidel, pp 251.CrossRefGoogle Scholar
2. Bally, J. and Lada, C. 1982, preprint.Google Scholar
3. Lada, C. 1982, Bull. AAS 14, 641.Google Scholar
4. Sullivan, W.T. 1973, Ap. J. Suppl. 25, 393.CrossRefGoogle Scholar
5. Strelnitskii, V. and Syunyaev, R. 1972, Astron. Zh. 49, 704; Sov. Astron. 16, 579 (1973).Google Scholar
6. Kwan, J. and Scoville, N. 1976, Ap. J. 210, L39.CrossRefGoogle Scholar
7. Zuckerman, B., Kuiper, T. and Rodriguez-Kuiper, E. 1976, Ap. J. 209, L137.CrossRefGoogle Scholar
8. Wilson, R.W., Jefferts, K.B. and Penzias, A.A. 1970, Ap. J. 161, L43.CrossRefGoogle Scholar
9. Thaddeus, P., Kutner, M., Penzias, A., Wilson, R. and Jefferts, K. 1972, Ap. J. 176, L73.CrossRefGoogle Scholar
10. Dickinson, D. 1972, Ap. J. 175, L43.CrossRefGoogle Scholar
11. Herbig, G.H. 1951, Ap. J. 113, 697.CrossRefGoogle Scholar
12. Haro, G. 1952, Ap. J. 115, 572.CrossRefGoogle Scholar
13. Gautier, T., Fink, U., Treffers, R. and Larson, H. 1976, Ap. J. 207, L129.CrossRefGoogle Scholar
14. Beckwith, S., Persson, E., Neugebauer, G. and Becklin, E. 1978, Ap. J. 223, 464.CrossRefGoogle Scholar
15. Simon, M., Righini-Cohen, G., Joyce, R. and Simon, T. 1979, Ap. J. 230, LI75.CrossRefGoogle Scholar
16. Beck, S., Lacy, J., and Geballe, T. 1979, Ap. J. 234, L213.CrossRefGoogle Scholar
17. Knacke, R. and Young, E. 1981, Ap. J. 249, L65.CrossRefGoogle Scholar
18. Scoville, N. Kleinmann, S., Hall, D. and Ridgway, S. 1981, Ap. J. 253, 136.CrossRefGoogle Scholar
19. Beckwith, S., Evans, N., Gatley, I., Gull, G. and Russell, R. 1982, in press.Google Scholar
20. Davis, D.S., Larson, H.P. and Smith, H.A. 1982, Ap. J. 259, 166.CrossRefGoogle Scholar
21. Nadeau, D., Geballe, T. and Neugebauer 1982, Ap. J. 253, 154.CrossRefGoogle Scholar
22. Watson, D., Storey, J., Townes, C., Haller, E., and Hansen, W. 1980, Ap. J. 239, L129.CrossRefGoogle Scholar
23. Storey, J., Watson, D., Townes, C., Haller, E. and Hansen, W. 1981, Ap. J. 247, 136.CrossRefGoogle Scholar
24. Watson, D. 1982, Ph. D. Thesis, University of California, Berkeley.Google Scholar
25. Kwan, J. 1977, Ap. J. 216, 713.CrossRefGoogle Scholar
26. London, R., McCray, R., and Chu, S.I. 1977, Ap. J. 217, 442.CrossRefGoogle Scholar
27. Draine, B. 1980, 241, 1021.Google Scholar
28. Chernoff, D.F., Hollenbach, D.J. and McKee, C.F. 1982, Ap. J. 259, L97.CrossRefGoogle Scholar
29. Draine, B. and Roberge, W. 1982, Ap. J. 259, L91.CrossRefGoogle Scholar
30. Knapp, G., Phillips, T., Huggins, P. and Redman, R. 1981, Ap. J. 250, 175.CrossRefGoogle Scholar
31. Solomon, P., Huguenin, G. and Scoville, N. 1981, Ap. J. 245, L19.CrossRefGoogle Scholar
32. Genzel, R., Reid, M., Moran, J. and Downes, D. 1981, Ap. J. 244, 884.CrossRefGoogle Scholar
33. Downes, D., Genzel, R., Becklin, E. and Wynn-Williams, C.G. 1981, Ap. J. 244, 869.CrossRefGoogle Scholar
34. Zuckerman, B. in IAU Symp. No. 96, Infrared Astronomy, eds. Wynn- Williams, C. and Cruikshank, D., Reidel, p.275.Google Scholar
35. Scoville, N. ibid, p.187.Google Scholar
36. Beckwith, S. ibid, p.167.Google Scholar
37. Phillips, J. and Beckman, J. 1980, MNRAS 193, 245.CrossRefGoogle Scholar
38. Hartmann, L. and McGregor, K. 1982, Ap. J. 259, 180.CrossRefGoogle Scholar
39. Snell, R., Loren, R. and Plambeck, R. 1980, Ap. J. 239, LI7.CrossRefGoogle Scholar
40. Beichman, C. and Harris, S. 1981, Ap. J. 245, 589.CrossRefGoogle Scholar
41. Cudworth, K. and Herbig, G. 1979, A. J. 84, 548.CrossRefGoogle Scholar
42. Herbig, G. and Jones, B. 1981, A. J. 86, 1232.CrossRefGoogle Scholar
43. Walker, R.C., Matsakis, D. and Garcia-Barreto, J. 1982, Ap. J. 255, 128.CrossRefGoogle Scholar
44. Heckman, T. and Sullivan, W. 1976, Ap. Lett. 17, L105.Google Scholar
45. Morris, M. 1976, Ap. J. 210, 100.CrossRefGoogle Scholar
46. Genzel, R. and Downes, D. 1977, Astr. Ap. Suppl. 30, 145.Google Scholar
47. Goss, W.M., Knowles, S., Balister, M., Batchelor, R. and Wellington, K. 1976, MNRAS 174, 541.CrossRefGoogle Scholar
48. Bally, J. and Lada, C. 1982, preprint.Google Scholar
49. Rodriguez, L., Carral, P., Ho, P., and Moran, J. 1982, Ap. J. 260, 635.CrossRefGoogle Scholar
50. Snell, R. and Edwards, S. 1982, in press.Google Scholar
51. Blitz, L. and Thaddeus, P. 1980, Ap. J. 241, 676.CrossRefGoogle Scholar
52. Hall, D., Kleinmann, S., Ridgway, S. and Gillett, F. 1978, Ap. J. 223, L47.CrossRefGoogle Scholar
53. Simon, M. et al. 1982, preprint.Google Scholar
54. Moran, J.M., Garay, G., Reid, M., Genzel, R. and Ho, P. 1982, in Proc. of the Symposium on Orion Nebula to Honor H. Draper, eds. Glassgold, A. and Huggins, P., New York Academy of Sciences.Google Scholar
55. Genzel, R., Moran, J., Lane, A., Predmore, C., Ho, P., Hansen, S. and Reid, M. 1979, Ap. J. 231, L73.CrossRefGoogle Scholar
56. Wright, M. and Plambeck, R., in prep.Google Scholar
57. Elitzur, M. 1982, Ap. J. in press.Google Scholar
58. Hansen, S. 1980, Ph.D. Thesis, Univ. of Mass.Google Scholar
59. Hansen, S. and Johnston, K. 1980, Bull. AAS 12, 824.Google Scholar
60. Genzel, R., Downes, D., Schwartz, P., Spencer, J., Pankonin, V. and Baars, J. 1980, Ap. J. 239, 519.CrossRefGoogle Scholar
61. Plambeck, R., priv. comm.Google Scholar
62. Snyder, L. 1980, in IAU Symp. 87, Interstellar Molecules, ed. Andrew, B., Reidel.Google Scholar
63. Reid, M. and Moran, J. 1981, Ann. Rev. Astr. Ap. 19, 231.CrossRefGoogle Scholar
64. Wilson, T., Downes, D. and Bieging, J. 1979, Astr. Ap. 71, 275.Google Scholar
65. Morris, M., Palmer, P. and Zuckerman, B. 1980, Ap. J. 237, 1.CrossRefGoogle Scholar
66. Genzel, R., Downes, D., Ho, P. and Bieging, J. 1982, Ap. J. 259, L103.CrossRefGoogle Scholar
67. Bieging, J., Martin, R., Pauls, T. and Wilson, T. 1982, in prep.Google Scholar
68. Clark, F., Brown, R., Godfrey, P., Storey, J., and Johnson, R. 1976, Ap. J. 210, L139.CrossRefGoogle Scholar
69. Loren, R., Erickson, N., Snell, R., Mundy, L. and Davis, J. 1981, Ap. J. 244, L107.CrossRefGoogle Scholar
70. Goldsmith, P., Snell, R., Deguchi, S., Krotkov, R. and Linke, R. 1982, Ap. J. 260, 147.CrossRefGoogle Scholar
71. Hollis, J.M., Lovas, F.J., Suenram, R.D., Jewell, P.R., Snyder, L.E. 1982, Ap. J., in press.Google Scholar
72. Olofsson, H., Hjalmarson, A. and Rydbeck, O. 1981, Astr. Ap. 100, L30.Google Scholar
73. Downes, D., Genzel, R., Hjalmarson, A., Nyman, L.A. and Ronnang, B. 1982, Ap. J. 252, L29.CrossRefGoogle Scholar
74. Erickson, N., Goldsmith, P., Ulich, B., Lada, C., Berson, R., Snell, R. and Huguenin, C. 1982, Bull. AAS 14, 627.Google Scholar
75. Phillips, J.P., White, G. and Watt, G. 1982, MNRAS 199, 1033.CrossRefGoogle Scholar
76. Olofsson, H., Ellder, J., Hjalmarson, A. and Rydbeck, G., preprint.Google Scholar
77. Plambeck, R., Wright, M., Welch, W., Bieging, J., Baud, B., Ho, P. and Vogel, S. 1982, Ap. J. 259, 617.CrossRefGoogle Scholar
78. Konigl, A. preprint.Google Scholar
79. Canto, J. 1980, Astr. Ap. 86, 327.Google Scholar
80. Ho, P., Moran, J. and Rodriguez, L. 1982, Ap. J. in press.Google Scholar
81. Lada, C., and Harvey, P. 1981, Ap. J. 245, 58.CrossRefGoogle Scholar
82. Barrett, J. and Solomon, P. 1982, in prep.Google Scholar
83. Werner, M., Dinerstein, H. and Capps, R. 1982, Ap. J. Submitted.Google Scholar
84. Snyder, L. and Buhl, D. 1974, Ap. J. 189, L31.CrossRefGoogle Scholar
85. Genzel, R. and Downes, D. 1979, Astr. Ap. 72, 234.Google Scholar
86. Goss, W.M., Haynes, R., Knowles, S., Batchelor, R. and Wellington, K. 1977, MNRAS, 180, 51p.CrossRefGoogle Scholar
87. Rodriguez, L., Moran, J., Ho, P. and Gottlieb, E. 1980, Ap. J. 235, 845.CrossRefGoogle Scholar
88. Batchelor, R., Caswell, J., Goss, W.M., Haynes, R., Knowles, S., and Wellington, K. 1980, Austr. J. Phys., 33, 139.CrossRefGoogle Scholar
89. Fisher, J., Righini-Cohen, G., Simon, M., Joyce, R. and Simon, T. 1980, Ap. J. 240, L95.CrossRefGoogle Scholar
90. Thompson, R. 1982, Ap. J. 257, 171.CrossRefGoogle Scholar
91. Bally, J. and Lane, A. 1982, Ap. J. in press.Google Scholar
92. Jaffe, D., Glisten, R. and Domes, D. 1981, Ap. J. 250, 621.CrossRefGoogle Scholar
93. Miller, G. and Scalo, J. 1979, Ap. J. Suppl. 41, 513.CrossRefGoogle Scholar
94. Spitzer, L. 1978, “Physical Processes in the Interstellar Medium”, Wiley.Google Scholar
95. Goldsmith, P., Erickson, N., Fetterman, H., Clifton, B., Peck, B., Tannenwald, P., Koepf, G., Buhl, D. and McAvoy, N. 1981, Ap. J. 243, L79.CrossRefGoogle Scholar
96. van Vliet, A., de Grauuw, Th., Lee, T., Lidholm, S. and v. d. Stadt, H. 1981, Astr. Ap. 101, LI.Google Scholar
97. Stacey, G., Kurtz, N.T., Smyers, S., Harwit, M., Russell, R. and Melnich, G. 1982, Ap. J. 257, L37.CrossRefGoogle Scholar
98. Norman, C. and Silk, J. 1979, Ap. J. 228, 197.CrossRefGoogle Scholar