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Pre-Main-Sequence Evolution of Stars and Young Clusters

  • Francesco Palla
Chapter
Part of the Saas-Fee Advanced Courses book series (SAASFEE, volume 29)

Abstract

The location of optically visible Pre-Main-Sequence (PMS) stars in the H-R diagram combined with the use of theoretical evolutionary tracks have played a central role in stellar evolution studies since the initial work of Hayashi, Cameron and Iben in the early 1960s. Hayashi and his contemporaries lacked a theory of the protostar phase, and therefore could not specify with any degree of confidence the initial conditions for PMS contraction. A simple argument indicated that if the interstellar cloud radiated away little energy during its collapse, the starting values of the stellar radius would be some two orders of magnitude greater than the corresponding main-sequence values ([20]). The contraction time (Kelvin-Helmholtz time) is so short for these large radii and high surface luminosities that the poorly understood early collapse would be much too brief to affect the subsequent evolution. Adopting the large initial radii, [25] and [15] followed numerically the hydrostatic contraction of stars with masses from less than 1 M to over 100 M. The evolution of all stars was thought to be qualitatively the same, with quantitative differences scaling in a simple manner with the stellar mass M*.

Keywords

Star Formation Accretion Rate Molecular Cloud Stellar Mass Young Star 
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. 1.
    André, P., Ward-Thompson, D., Barsony, M. 2000, in Protostars and Planets IV, eds. V. Mannings, A.P. Boss & S.S. Russell (Tucson: University of Arizona Press), p. 59Google Scholar
  2. 2.
    Alves, J.F., Lada, C.J., Lada, E.A. 2001, Nature, 409, 159ADSCrossRefGoogle Scholar
  3. 3.
    Bate, M.R. 1998, ApJ, 508, L95ADSCrossRefGoogle Scholar
  4. 4.
    Beckwith, S.V.W. 1999, in The Origin of Stars and Planetary Systems, eds. C.J. Lada & N.D. Kylafis (Dordrecht: Kluwer Acad. Press), p.577Google Scholar
  5. 5.
    Bodenheimer, P. 1992, in Star Formation in Stellar Systems, eds. G. Tenorio-Tagle, M. Prieto & F. Sanchez (Cambridge: Cambridge Univ. Press), p.1Google Scholar
  6. 6.
    Bonnor, W.B. 1956, MNRAS, 116, 351MathSciNetADSGoogle Scholar
  7. 7.
    Boss, A.P. 1999, ApJ, 520, 744ADSCrossRefGoogle Scholar
  8. 8.
    Caselli, P., Myers, P.C. 1995, ApJ, 446, 665ADSCrossRefGoogle Scholar
  9. 9.
    Ciolek, G.E., Mouschovias, T.Ch. 1996, ApJ, 468, 749ADSCrossRefGoogle Scholar
  10. 10.
    Cox, J.P., Giuli, R.T. 1968, Principles of Stellar Structure, (New York: Gordon and Breach)Google Scholar
  11. 11.
    Crutcher, R.M. 1999, ApJ, 520, 706ADSCrossRefGoogle Scholar
  12. 12.
    Ebert, R. 1955, Z. Astr. 37, 222ADSGoogle Scholar
  13. 13.
    Eisenhauer, F. Quirrenbach, A., Zinnecker, H., Genzel, R. 1998, ApJ, 498, 278ADSCrossRefGoogle Scholar
  14. 14.
    Evans, N.J., II 1999, ARAA, 37, 311ADSCrossRefGoogle Scholar
  15. 15.
    Ezer, D., Cameron, A.G.W. 1965, Canadian J. Phys., 43, 1497ADSGoogle Scholar
  16. 16.
    Fuller, G.A., Myers, P.C. 1992, ApJ, 384, 523ADSCrossRefGoogle Scholar
  17. 17.
    Galli, D., Shu, F.H. 1993, ApJ, 417, 220ADSCrossRefGoogle Scholar
  18. 18.
    Galli, D., Lizano, S., Li, Z.-Y, Adams, F.C., Shu, F.H. 1999, ApJ, 521, 630ADSCrossRefGoogle Scholar
  19. 19.
    Hartmann, L., Cassen, P., Kenyon, S.J. 1997, ApJ, 475, 770ADSCrossRefGoogle Scholar
  20. 20.
    Hayashi, C. 1966, ARAA, 4, 171ADSCrossRefGoogle Scholar
  21. 21.
    Henriksen, R., Andre, P., Bontemps, S. 1997, A&A, 323, 549ADSGoogle Scholar
  22. 22.
    Henyey, L.G., LeLevier, R., Levee, R.D. 1955, PASP, 67, 154ADSCrossRefGoogle Scholar
  23. 23.
    Hillenbrand L.A. 1997, AJ 113, 1733ADSCrossRefGoogle Scholar
  24. 24.
    Hillenbrand L.A., Massey P., Strom S.E., Merrill K.M. 1993, AJ, 106, 1906ADSCrossRefGoogle Scholar
  25. 25.
    Iben, I. 1965, ApJ, 141, 993ADSCrossRefGoogle Scholar
  26. 26.
    Larson, R.B. 1969, MNRAS, 145, 121ADSGoogle Scholar
  27. 27.
    Larson, R.B. 1981, MNRAS, 194, 809ADSGoogle Scholar
  28. 28.
    Lizano, S., Shu, F.H. 1989, ApJ, 342, 834ADSCrossRefGoogle Scholar
  29. 29.
    Massey P., Johnson K.E., DeGioia-Eastwood K. 1995, ApJ, 454, 151ADSCrossRefGoogle Scholar
  30. 30.
    Massey P., Hunter D.A. 1998, ApJ, 493, 180ADSCrossRefGoogle Scholar
  31. 31.
    Masunaga, H., Miyama, S.M., Inutsuka, S. 1998, ApJ, 495, 346ADSCrossRefGoogle Scholar
  32. 32.
    McKee, C.F., Zweibel, E.G., Goodman, A.A., Heiles, C. 1993, in Protostars and Planets III, eds. E.H. Levy & J.I. Lunine (Tucson: University of Arizona Press), p.327Google Scholar
  33. 33.
    McLaughlin, D.E., Pudritz, R.E. 1996, ApJ 469, 194ADSCrossRefGoogle Scholar
  34. 34.
    McLaughlin, D.E., Pudritz, R.E. 1997, ApJ, 476, 750ADSCrossRefGoogle Scholar
  35. 35.
    Mercer-Smith, J.A., Cameron, A.G.W., Epstein, R.I.: 1984, ApJ, 279, 363ADSCrossRefGoogle Scholar
  36. 36.
    Mestel, L., Spitzer, L. 1956, MNRAS, 116, 505MathSciNetADSGoogle Scholar
  37. 37.
    Mouschovias, T.Ch., Ciolek, G.E. 1999, in The Origin of Stars and Planetary Systems, eds. C.J. Lada &, N.D. Kylafis (Dordrecht: Kluwer Acad. Press), p. 305Google Scholar
  38. 38.
    Palla, F., Stahler, S.W. 1990, ApJ, 360, L47ADSCrossRefGoogle Scholar
  39. 39.
    Palla, F., Stahler, S.W. 1991, ApJ, 375, 288ADSCrossRefGoogle Scholar
  40. 40.
    Palla, F., Stahler, S.W. 1992, ApJ, 392, 667ADSCrossRefGoogle Scholar
  41. 41.
    Palla, F, Stahler, S.W. 1993, ApJ, 418, 414ADSCrossRefGoogle Scholar
  42. 42.
    Palla, F, Stahler, S.W. 1999, ApJ, 525, 772ADSCrossRefGoogle Scholar
  43. 43.
    Palla, F, Stahler S. W. 2000, ApJ, 540, 255ADSCrossRefGoogle Scholar
  44. 44.
    Shu, F.H. 1977, ApJ, 214, 488ADSCrossRefGoogle Scholar
  45. 45.
    Stahler, S.W. 1983, ApJ, 274, 822ADSCrossRefGoogle Scholar
  46. 46.
    Stahler, S.W. 1988a, PASP, 100, 1474ADSCrossRefGoogle Scholar
  47. 47.
    Stahler, S.W. 1988b, ApJ, 332, 804ADSCrossRefGoogle Scholar
  48. 48.
    Stahler, S.W., Shu, F.H., Taam, R.E. 1980, ApJ, 302, 590CrossRefGoogle Scholar
  49. 49.
    Terebey, S., Shu, F.H., Cassen P. 1984, ApJ, 286, 529ADSCrossRefGoogle Scholar
  50. 50.
    van den Ancker M., de Winter, D., Tjin A Djie, H.R.E. 1998, A&A, 330, 145ADSGoogle Scholar
  51. 51.
    Von Sengbusch, K. 1968, Zs.f.Ap., 69, 79ADSGoogle Scholar

References

  1. 1.
    Alexander, D.R., Ferguson, J.W. 1994, ApJ, 437, 879ADSCrossRefGoogle Scholar
  2. 2.
    Alexander, D.R., Augason, G.C., Johnson, H.R. 1989, ApJ, 345, 1014ADSCrossRefGoogle Scholar
  3. 3.
    Alexander, D.R., Tamanai, A.I., Allard, F., Ferguson, J.W. 1998, BAAS, 67, 16Google Scholar
  4. 4.
    Allard, F., Hauschildt, P.H., Alexander, D.R., Starrfield, S. 1997, ARAA, 35, 137ADSCrossRefGoogle Scholar
  5. 5.
    Baraffe, I., Chabrier, G., Allard, F., Hauschildt, P.H. 1997, A&A, 327, 1054ADSGoogle Scholar
  6. 6.
    Baraffe, I., Chabrier, G., Allard, F., Hauschildt, P.H. 1998, A&A, 337, 403ADSGoogle Scholar
  7. 7.
    Beech, M., Mitalas, R. 1995, ApJS, 95, 517ADSCrossRefGoogle Scholar
  8. 8.
    Bernasconi, P., Maeder, A. 1996, A&A, 307, 829ADSGoogle Scholar
  9. 9.
    Bessell, M.S. 1979, PASP, 91, 589ADSCrossRefGoogle Scholar
  10. 10.
    Bessell, M.S. 1991, PASP, 101, 66Google Scholar
  11. 11.
    Bessell, M.S. 1998, in Fundamental Stellar Properties, IAU Symp. 189, eds. T.R. Bedding, A.J. Booth & J. Davis (Dordrecht: Kluwer Acad. Press), p. 127Google Scholar
  12. 12.
    Bessell, M.S., Brett, J.M. 1988, PASP, 100, 1134ADSCrossRefGoogle Scholar
  13. 13.
    Beust, H., Corporon, P., Siess, L., Forestini, M., Lagrange, A.-M. 1997, A&A, 320, 478ADSGoogle Scholar
  14. 14.
    Böhm-Vitense, E. 1958, Zs.f.Ap., 46, 108ADSGoogle Scholar
  15. 15.
    Bonnell, I., Bate, M.R., Zinnecker, H. 1998, MNRAS, 298, 93ADSCrossRefGoogle Scholar
  16. 16.
    Brandner, W., Zinnecker, H. 1997, A&A, 321, 220ADSGoogle Scholar
  17. 17.
    Briceno, C., Hartmann, L., Stauffer, J., Martín, E. 1998, AJ, 115, 2074ADSCrossRefGoogle Scholar
  18. 18.
    Burrows, A., Hubbard, W.B., Saumon, D., Lunine, J.I. 1996, ApJ, 406, 158ADSCrossRefGoogle Scholar
  19. 19.
    Canuto, V.M., Mazzitelli, I. 1991, ApJ, 370, 295ADSCrossRefGoogle Scholar
  20. 20.
    Canuto, V.M., Goldman, I., Mazzitelli, I. 1996, ApJ, 473, 550ADSCrossRefGoogle Scholar
  21. 21.
    Casey, B.W., Mathieu, R.D., Vaz, L.P.R., Andersen J., Suntzeff, N.B. 1998, AJ, 115, 1617ADSCrossRefGoogle Scholar
  22. 22.
    Caughlan, G., Fowler, W. 1988, Atomic Data Nucl. Data Tables, 40, 283ADSCrossRefGoogle Scholar
  23. 23.
    Chabrier, G., Baraffe, I. 1995, ApJ, 451, L29ADSCrossRefGoogle Scholar
  24. 24.
    Chabrier, G., Baraffe, I. 1997, A&A, 327, 1039ADSGoogle Scholar
  25. 25.
    Chabrier, G., Baraffe, I., Plez, B. 1996, ApJ, 459, L91ADSCrossRefGoogle Scholar
  26. 26.
    Claret, A. 1995, A&A, 109, 441ADSGoogle Scholar
  27. 27.
    Cohen, M., Kuhi, L.V. 1979, ApJS, 41, 743ADSCrossRefGoogle Scholar
  28. 28.
    Cox, A.N., Tabor J.E. 1976, ApJS, 31, 271ADSCrossRefGoogle Scholar
  29. 29.
    D’Antona, F. 1993, in Inside the Stars, eds. W.W. Weiss & A. Baglin, A.S.P. Conf. Ser. 40 (San Francisco: Astr. Soc. Pac.), p. 395Google Scholar
  30. 30.
    D’Antona, F., Mazzitelli, I. 1984, A&A, 138, 431ADSGoogle Scholar
  31. 31.
    D’Antona, F., Mazzitelli, I. 1994, ApJS, 90, 467ADSCrossRefGoogle Scholar
  32. 32.
    D’Antona, F., Mazzitelli, I. 1998, in Cool Stars in Clusters and Associations, eds. G. Micela, R. Pallavicini & S. Sciortino, Mem.S.A.It., 68, 807Google Scholar
  33. 33.
    Däppen, W. 1993, in Inside the Stars, eds. W.W. Weiss & A. Baglin, A.S.P. Conf. Ser. 40 (San Francisco: Astr. Soc. Pac.), p. 208Google Scholar
  34. 34.
    Delfosse, X., Forveille, T., Mayor, M., Burnet, M., Perrier, C. 1999, A&A, 341, L63ADSGoogle Scholar
  35. 35.
    Draine, B.T., Lee, H.M. 1984, ApJ, 285, 89ADSCrossRefGoogle Scholar
  36. 36.
    Duquennoy, A., Mayor, M. 1991, A&A, 248, 485ADSGoogle Scholar
  37. 37.
    Dutrey, A., Guilloteau, S., Simon, M. 1994, A&A, 286, 149ADSGoogle Scholar
  38. 38.
    Fischer, D. A., Marcy, G. W. 1992, ApJ, 396, 178ADSCrossRefGoogle Scholar
  39. 39.
    Forestini, M. 1994, A&A, 285, 473ADSGoogle Scholar
  40. 40.
    Gizis, J.E. 1997, AJ, 113, 806ADSCrossRefGoogle Scholar
  41. 41.
    Graboske, H., DeWitt, H.E., Grossman, H.S., Cooper, M.S. 1973, ApJ, 181, 457ADSCrossRefGoogle Scholar
  42. 42.
    Grevesse, N., Sauval, A.J. 1998, SSRv, 85, 161ADSGoogle Scholar
  43. 43.
    Grossman, A.N., Graboske, H.C. 1971, ApJ, 164, 475ADSCrossRefGoogle Scholar
  44. 44.
    Guilloteau, S., Dutrey, A., Simon, M. 1999, A&A, 348, 570ADSGoogle Scholar
  45. 45.
    Habets, G.M.H.J., Heintze, J.R.W. 1981, A&AS, 46, 193ADSGoogle Scholar
  46. 46.
    Hartigan, P., Strom, K.M., Strom, S.E. 1994, ApJ, 427, 961ADSCrossRefGoogle Scholar
  47. 47.
    Henry, T.J., McCarthy, D.W., Jr. 1993, AJ, 106, 773ADSCrossRefGoogle Scholar
  48. 48.
    Huebner, W.F., Merts, A., Magee, N.H., Argo, M.F. 1977, Los Alamos Sci. Lab. Rep., LA-6760-MGoogle Scholar
  49. 49.
    Iglesias, C.A., Rogers, F.J. 1991, ApJ, 371, L73ADSCrossRefGoogle Scholar
  50. 50.
    Iglesias, C.A., Rogers, F.J. 1996, ApJ, 464, 943ADSCrossRefGoogle Scholar
  51. 51.
    Kahn, F.D. 1974, A&A, 37, 149ADSGoogle Scholar
  52. 52.
    Kenyon, S.J., Hartmann, L. 1995, ApJS, 101, 117ADSCrossRefGoogle Scholar
  53. 53.
    Kirkpatrick, J.D., Kelly, D.J., Rieke, G.H., Liebert, J. 1993, ApJ, 402, 643ADSCrossRefGoogle Scholar
  54. 54.
    Koorneeff, J. 1983, A&A, 128, 84ADSGoogle Scholar
  55. 55.
    Lacy, C.H. 1977, ApJ, 218, 444ADSCrossRefGoogle Scholar
  56. 56.
    Larson, R.B., Starrfield, S. 1971, A&A, 13, 190ADSGoogle Scholar
  57. 57.
    Leggett, S.K., Allard, F., Berriman, G., Dahn, C.C., Hauschildt, P. 1996, ApJS, 104, 117ADSCrossRefGoogle Scholar
  58. 58.
    Leinert, C., Zinnecker, H., Weitzel, N., Christou, J., Ridgway, S.T., Jameson, R., Haas, M., Lenzen, R. 1993, A&A, 278, 129ADSGoogle Scholar
  59. 59.
    Leung, K.-C., Schneider, D.P. 1978, AJ, 83, 618ADSCrossRefGoogle Scholar
  60. 60.
    Luhman, K.L., Rieke, G.H. 1998, ApJ, 497, 354ADSCrossRefGoogle Scholar
  61. 61.
    Maceroni, C., Rucinski, S.M. 1997, PASP, 109, 782ADSCrossRefGoogle Scholar
  62. 62.
    Norberg, P., Maeder, A. 1999, A&A, 359, 1025ADSGoogle Scholar
  63. 63.
    Behrend, R., Maeder, A. 2000, A&A, 373, 190ADSCrossRefGoogle Scholar
  64. 64.
    Mazzitelli, I. 1989, in Low-Mass Star Formation and Pre-Main-Sequence Objects, ed. Bo Reipurth, ESO Proc. 33, p. 407Google Scholar
  65. 65.
    Mazzitelli, I., Moretti, M. 1980, ApJ, 235, 955ADSCrossRefGoogle Scholar
  66. 66.
    Metcalfe, T.S., Mathieu, R.D., Latham, D.W., Torres, G. 1996, ApJ, 456, 356ADSCrossRefGoogle Scholar
  67. 67.
    Meyer, M.R. 1996, PhD Thesis, University of MassachussetsGoogle Scholar
  68. 68.
    Mihalas, D., Däppen, W., Hummer, D.G. 1988, ApJ, 331, 815ADSCrossRefGoogle Scholar
  69. 69.
    Nakano, T. 1989, ApJ, 345, 464ADSCrossRefGoogle Scholar
  70. 70.
    Palla, F., Stahler, S.W. 2001, ApJ, 553, 299ADSCrossRefGoogle Scholar
  71. 71.
    Pollack, J.B., Hollenbach, D., Beckwith, S., Simonelli, D.P., Roush, T., Fong, W. 1994, ApJ, 421, 615ADSCrossRefGoogle Scholar
  72. 72.
    Rogers, F.J., Iglesias, C.A. 1992, ApJS, 79, 507ADSCrossRefGoogle Scholar
  73. 73.
    Salpeter, E.E. 1954, Mem. Roy Soc. Liège, 14, 116ADSGoogle Scholar
  74. 74.
    Schaller, G., Schaerer, D., Meynet, G., Maeder, A. 1992, A&AS, 96, 269ADSGoogle Scholar
  75. 75.
    Schmidt-Kaler, Th. 1981, in Landolt-Börnstein, Gruppe VI, Bond 2,1Google Scholar
  76. 76.
    Seaton, M.J. 1993, in Inside the Stars, eds. W.W. Weiss & A. Baglin, A.S.P. Conf. Ser. 40 (San Francisco: Astr. Soc. Pac.), p. 222Google Scholar
  77. 77.
    Seaton, M.J., Yan, Y., Mihalas, D., Pradhan, A.K. 1994, MNRAS, 266, 805ADSGoogle Scholar
  78. 78.
    Simon, N.R. 1982, ApJ, 260, L87ADSCrossRefGoogle Scholar
  79. 79.
    Simon, M., Ghez, A.M., Leinert, Ch. 1993, ApJ, 408, L33ADSCrossRefGoogle Scholar
  80. 80.
    Stahler, S.W., Palla, F., Ho, P.T.P. 2000, in Protostars and Planets IV, eds. V. Mannings, A.P. Boss, and S.S. Russell (Tucson: U. of Arizona Press), p. 327Google Scholar
  81. 81.
    Stauffer, J., R., Hartmann, L., Barrado y Navascues, D. 1995, ApJ, 454, 910ADSCrossRefGoogle Scholar
  82. 82.
    Strom, K.M., Strom, S.E. 1994, ApJ, 424, 237ADSCrossRefGoogle Scholar
  83. 83.
    Swenson, J.H., Faulkner, J., Rogers, F.J., Iglesias, C.A. 1996, priv. comm.Google Scholar
  84. 84.
    Testi L., Palla F., Natta A. 1998, A&AS, 133, 81ADSCrossRefGoogle Scholar
  85. 85.
    Ventura, P., Zeppieri, A., Mazzitelli, I., D’Antona, F. 1997, A&A, 331, 1011ADSGoogle Scholar
  86. 86.
    Viti, S., Jones, H.R.A., Schweitzer, A., Allard, F., Hauschildt, P.H., Tennyson, J. 1997, MNRAS, 291, 780ADSGoogle Scholar
  87. 87.
    White, R.J., Ghez, A.M., Reid, I.N., Schultz, G. 1999, ApJ, 520, 811ADSCrossRefGoogle Scholar
  88. 88.
    Wilking, B.A., Greene, T.P., Meyer, M.R. 1999, AJ, 117, 469ADSCrossRefGoogle Scholar
  89. 89.
    Wolfire, M.G., Cassinelli, J.P. 1987, ApJ, 319, 850ADSCrossRefGoogle Scholar
  90. 90.
    Yorke, H., Krügel, E. 1977, A&A, 54, 183ADSGoogle Scholar

References

  1. 1.
    Armitage, P.J., Clarke, C.J. 1996, MNRAS, 280, 458ADSGoogle Scholar
  2. 2.
    Baade, D., Stahl, O. 1989, A&A, 209, 268ADSGoogle Scholar
  3. 3.
    Baker, N.H., Kippenhan, R. 1965, ApJ, 142, 868ADSCrossRefGoogle Scholar
  4. 4.
    Barrado y Navascués, D., Stauffer, J.R. 1996, ApJ, 310, 879Google Scholar
  5. 5.
    Basri, G., Martín, E.L. 1999, AJ, 118, 2460ADSCrossRefGoogle Scholar
  6. 6.
    Basri, G., Marcy, G.W., Graham, J.R. 1996, ApJ, 458, 600ADSCrossRefGoogle Scholar
  7. 7.
    Bildsten, L. Brown, E.F., Matzner, CD., Ushomirsky, G. 1997, ApJ, 482, 442ADSCrossRefGoogle Scholar
  8. 8.
    Bodenheimer, P. 1965, ApJ, 142, 451ADSCrossRefGoogle Scholar
  9. 9.
    Bono, G., Caputo, F., Cassisi, S., Castellani, V., Marconi, M., Stellingwerf, R.F. 1997 ApJ, 477, 346ADSCrossRefGoogle Scholar
  10. 10.
    Bouvier, J., Forestini, M., Allain, S. 1997b, A&A, 326, 1023ADSGoogle Scholar
  11. 11.
    Bouvier, J., Bertout, C., Benz, W., Mayor, M. 1986, A&A, 165, 110ADSGoogle Scholar
  12. 12.
    Bouvier, J., Cabrit, S., Fernandez, M., Martín, E.L., Matthews, J. 1993, A&A, 101, 495ADSGoogle Scholar
  13. 13.
    Bouvier, J., Wichmann, R., Grankin, K., Allain, S., Covino, E., Fernandez, M., Martín, E.L., Terranegra, L., Catalano, S., Marilli, E. 1997a, A&A, 318, 495ADSGoogle Scholar
  14. 14.
    Breger, M. 1979, PASP, 91, 5ADSCrossRefGoogle Scholar
  15. 15.
    Burrows, A., Marley, M., Hubbard, W., Lunine, J., Guillot, T., Saumon, D., Freedman, R., Sudarsky, D., Sharp, C. 1997, ApJ, 491, 856ADSCrossRefGoogle Scholar
  16. 16.
    Choi, P., Herbst, W. 1996, AJ, 111, 283ADSCrossRefGoogle Scholar
  17. 17.
    Casali, M.M., Eiroa, C. 1996, A&A, 306, 427ADSGoogle Scholar
  18. 18.
    Catala, C., Simon, T., Praderie, F., Talavera, A., Thè, P.S., Tjin A Djie, H.R.E. 1989, A&A, 221, 273ADSGoogle Scholar
  19. 19.
    Cox, J.P. 1980, Theory of Stellar Pulsations, Princeton University PressGoogle Scholar
  20. 20.
    Donati, J.F., Semel, M., Carter, B.D., Rees, D.E., Cameron, A.C. 1997, MNRAS, 291, 658ADSGoogle Scholar
  21. 21.
    Edwards, S., Strom, S.E., Hartigan, P., Strom, K.M., Hillenbrand, L.A., Herbst, W., Attridge, J., Merrill, K.M, Probst, R., Gatley, I. 1993, AJ, 106, 372ADSCrossRefGoogle Scholar
  22. 22.
    Endal, A.S., Sofia, S. 1976, ApJ, 210, 184ADSCrossRefGoogle Scholar
  23. 23.
    Finkenzeller, U. 1985, A&A, 151, 340ADSGoogle Scholar
  24. 24.
    Gautschy, A., Saio, H. 1996, ARAA, 34, 551ADSCrossRefGoogle Scholar
  25. 25.
    Ghosh, P., Lamb, F.K. 1979, ApJ, 232, 259ADSCrossRefGoogle Scholar
  26. 26.
    Gullbring, E., Hartmann, L., Briceño, C. & Calvet, N. 1998, ApJ, 492, 323ADSCrossRefGoogle Scholar
  27. 27.
    Hartigan, P., Edwards, S., Ghandour, L. 1995, ApJ, 452, 736ADSCrossRefGoogle Scholar
  28. 28.
    Hartmann, L., Kenyon, S.J. 1990, ApJ, 349, 190ADSCrossRefGoogle Scholar
  29. 29.
    Hartmann, L., Calvet, N., Gullbring, N., D’Alessio, P. 1998, ApJ, 495, 385ADSCrossRefGoogle Scholar
  30. 30.
    Hartmann, L.W., Hewett, R., Stahler, S.W., Mathieu, R.D. 1986, ApJ, 309, 275ADSCrossRefGoogle Scholar
  31. 31.
    Herbig, G.H. 1978, in Problems of Physics and Evolution of the Universe, ed. L.V. Mirzoyan (Erevan: Acad.l Sci. Armenian SSR), p. 171Google Scholar
  32. 32.
    Herbst, W., Rhode, K.L., Hillenbrand, L.A., Curran, G. 2000, AJ, 119, 261ADSCrossRefGoogle Scholar
  33. 33.
    Hillenbrand, L.A., Strom, S.E., Vrba, P.J., Keene, J. 1992, ApJ, 397, 613ADSCrossRefGoogle Scholar
  34. 34.
    Hirth, G.A., Mundt, R., Solf, J. 1997, A&AS, 126, 437ADSCrossRefGoogle Scholar
  35. 35.
    Kawaler, S.D. 1988, ApJ, 33, 236ADSCrossRefGoogle Scholar
  36. 36.
    Keppens, R., MacGregor, K.B., Charbonneau, P. 1995, A&A, 294, 469ADSGoogle Scholar
  37. 37.
    Kippenhan, R., Thomas, H.-C. 1970, in Stellar Rotation, ed. A. Slattebak (Dordrecht: Reidel), p. 20Google Scholar
  38. 38.
    Königl, A. 1991, ApJ, 370, L39CrossRefGoogle Scholar
  39. 39.
    Krishnamurthi, A., Pinsonneault, M.H., Barnes, S., Sofia, S. 1997, ApJ, 480, 303ADSCrossRefGoogle Scholar
  40. 40.
    Kurtz, D.W., Marang, F. 1995, MNRAS, 276, 191ADSGoogle Scholar
  41. 41.
    Kurtz, D.W., Müller, M. 2001, MNRAS, 325, 1341ADSCrossRefGoogle Scholar
  42. 42.
    Magazzù, A., Rebolo, R., Martín, E.L. 1992, ApJ, 392, 159ADSCrossRefGoogle Scholar
  43. 43.
    Marconi, M., Palla, F. 1998, ApJ, 507, L141ADSCrossRefGoogle Scholar
  44. 44.
    Marconi, M., Ripepi, V., Alcalá, J.M., Covino, E., Palla, F., Terranegra, L. 2000, A&A, 355, L35ADSGoogle Scholar
  45. 45.
    Marconi, M., Ripepi, V., Bernabei, S., Palla, F., Alcalá, J.M., Covino, E., Terranegra, L. 2001, A&A, 372, L21ADSCrossRefGoogle Scholar
  46. 46.
    Marconi, M., Ripepi, V., Palla, F., 2001, in preparationGoogle Scholar
  47. 47.
    Martín, E.L. 1997, A&A, 321, 492ADSGoogle Scholar
  48. 48.
    Martín, E.L., Claret, A. 1996, A&A, 306, 408ADSGoogle Scholar
  49. 49.
    Martín, E.L., Rebolo, R., Magazzù, A., Pavlenko, Ya.V. 1994, A&A, 282, 503ADSGoogle Scholar
  50. 50.
    Martín, E.L., Basri, G., Zapatero Osorio, M.R., Rebolo, R., López, R.J., Garcia, R.J. 1998, ApJ, 507, L41ADSCrossRefGoogle Scholar
  51. 51.
    Mendes, L.T.S., D’Antona, F., Mazzitelli, I. 1999, A&A, 341, 174ADSGoogle Scholar
  52. 52.
    Montmerle, T., Grosso, N., Tsuboi, Y., Koyama, K. 2000, ApJ, 532, 1097ADSCrossRefGoogle Scholar
  53. 53.
    Natta, A., Grinin, V.P., Mannings, V. & Ungerechts, H. 1997, ApJ, 491, 885ADSCrossRefGoogle Scholar
  54. 54.
    Neuhäuser, R. 1997, Science, 276, 1373CrossRefGoogle Scholar
  55. 55.
    Palla, F. 1994, in Infrared Astronomy, eds. A. Mampaso & F. Sanchez (Cambridge: Cambridge Univ. Press), p. 1CrossRefGoogle Scholar
  56. 56.
    Parigi, G. 1992, Thesis, Univ. of Florence, unpublishedGoogle Scholar
  57. 57.
    Pigulski, A., Kolaczkowski, Z., Kopacki, G. 2000, in IAU Colloq. 176 The Impact of Large Scale Surveys on PUlsating Star Research, eds. L. Szabados & D. Kurtz (San Francisco: ASP), p. 499Google Scholar
  58. 58.
    Pinsonneault, M.H., Kawaler, S.D., Demarque, P. 1990, ApJS, 74, 501ADSCrossRefGoogle Scholar
  59. 59.
    Pinsonneault, M.H., Kawaler, S.D., Sofia, S., Demarque, P. 1989, ApJ, 338, 424ADSCrossRefGoogle Scholar
  60. 60.
    Queloz, D., Allain, S., Mermilliod, J.-C., Bouvier, J., Mayor, M. 1998, A&A, 335, 183ADSGoogle Scholar
  61. 61.
    Rebolo, R., Martín, E.L., Magazzù, A. 1992, ApJ, 389, L83ADSCrossRefGoogle Scholar
  62. 62.
    Rebolo, R., Magazzù, A., Martín, E.L. 1995, in Stellar and Interstellar Lithium, eds. F. Spite and R. Pallavicini, Mem.S.A.It., 66, 375Google Scholar
  63. 63.
    Rebolo, R., Martin, E.L., Basri, G., Marcy, G.W., Zapatero Osorio, M.R. 1996, ApJ, 469, L53ADSCrossRefGoogle Scholar
  64. 64.
    Sackmann, I.J. 1970, A&A, 8, 76ADSGoogle Scholar
  65. 65.
    Shu, F.H., Najita, J., Ostriker, E.C., Wilkin, F., Ruden, S., Lizano, S. 1994, ApJ, 429, 781ADSCrossRefGoogle Scholar
  66. 66.
    Siess, L., Forestini, M. 1996, A&A, 308, 472ADSGoogle Scholar
  67. 67.
    Siess, L., Livio, M. 1997, ApJ, 490, 785ADSCrossRefGoogle Scholar
  68. 68.
    Siess, L., Forestini, M., Bertout, C. 1997, A&A, 308, 472ADSGoogle Scholar
  69. 69.
    Siess, L., Forestini, M., Bertout, C. 1999, A&A, 342, 480ADSGoogle Scholar
  70. 70.
    Sills, L., Pinsonneault, M.H., Terndrup, D.M. 2000, ApJ, 534, 335ADSCrossRefGoogle Scholar
  71. 71.
    Stassun, K.G., Mathieu, R.D., Mazeh, T., Vrba, F.J. 1999, AJ, 117, 2941ADSCrossRefGoogle Scholar
  72. 72.
    Stassun, K.G., Mathieu, R.D., Vrba, F.J., Mazeh, T., Henden, A. 2001, AJ, 121, 1003ADSCrossRefGoogle Scholar
  73. 73.
    Stauffer, J.J.R., Schultz, G., Kirkpatrick, J.D. 1998, ApJ, 499, L199ADSCrossRefGoogle Scholar
  74. 74.
    Suran, M., Goupil, M., Baglin, A., Lebreton, Y. Catala, C. 2001, A&A, 372, 233ADSCrossRefGoogle Scholar
  75. 75.
    Weber, E.J., Davis, L. 1967, ApJ, 148, 217ADSCrossRefGoogle Scholar

References

  1. 1.
    Adams, F.C., Fatuzzo, M. 1996, ApJ, 464, 256ADSCrossRefGoogle Scholar
  2. 2.
    Alcalá, J.M., Krautter, J., Schmittt, J.H.M.M., Covino, E., Wichmann, R., Mundt, R. 1995, A&AS, 114, 109ADSGoogle Scholar
  3. 3.
    André P., Ward-Thompson D., Barsony M. 1993, ApJ, 406, 122ADSCrossRefGoogle Scholar
  4. 4.
    Bachiller, R., Cernicharo, J. 1986, A&A, 166, 283ADSGoogle Scholar
  5. 5.
    Ballesteros-Paredes, J., Hartmann, L., Vázquez-Semadeni, E. 1999, ApJ, 527, 285ADSCrossRefGoogle Scholar
  6. 6.
    Barsony, M., Kenyon, S.J., Lada, E.A., Teuben, P.J. 1997, ApJS, 112, 109ADSCrossRefGoogle Scholar
  7. 7.
    Bate, M.R., Clarke, C.J., McCaughrean, M.J. 1998, MNRAS, 297, 1163ADSCrossRefGoogle Scholar
  8. 8.
    Blaauw, A. 1964, ARAA, 2, 213ADSCrossRefGoogle Scholar
  9. 9.
    Bonnell I., Davies M.B. 1998, MNRAS, 295, 691ADSCrossRefGoogle Scholar
  10. 10.
    Briceño, C., Hartmann, L.W., Stauffer, J.R., Gagné, M., Stern, R.A., Caillault, J.P. 1997, AJ, 113, 740ADSCrossRefGoogle Scholar
  11. 11.
    Briceño, C., Calvet, N., Kenyon, S., Hartmann, L. 1999, AJ, 118, 1354ADSCrossRefGoogle Scholar
  12. 12.
    Carpenter, J.M., Meyer, M.R., Dougados, C., Strom, S.E., Hillenbrand, L.A. 1997, AJ, 114, 198ADSCrossRefGoogle Scholar
  13. 13.
    Cesaroni R., Churchwell E., Hofner P., Walmsley C.M., Kurtz S. 1994, A&A, 288, 903ADSGoogle Scholar
  14. 14.
    Cesaroni R., Felli M., Testi L., Olmi L., Walmsley C.M. 1997, A&A, 325, 725ADSGoogle Scholar
  15. 15.
    Cesaroni, R., Hofner, P., Walmsley, CM., Churchwell, E. 1998, A&A, 331, 709ADSGoogle Scholar
  16. 16.
    Clarke C., Bonnell I., Hillenbrand L.A. 2000, in Protostars and Planets IV, ed. V. Mannings, A.P. Boss & S.S. Russell (Tucson: University of Arizona Press), p. 151Google Scholar
  17. 17.
    Codella C., Testi L., Cesaroni R. 1997, A&A, 325, 282ADSGoogle Scholar
  18. 18.
    Covino, E., Alcalá, J.M., Allais, S., Bouvier, J., Terranegra, L., Krautter, J. 1997, A&A, 328, 187ADSGoogle Scholar
  19. 19.
    Elmegreen B.G. 1999, ApJ, 515, 323ADSCrossRefGoogle Scholar
  20. 20.
    Elmegreen B.G. 2000, ApJ, 530, 277ADSCrossRefGoogle Scholar
  21. 21.
    Elmegreen, B.G., Clemens, C. 1986, ApJ, 294, 523ADSCrossRefGoogle Scholar
  22. 22.
    Elmegreen B.G., Falgarone, E. 1996, ApJ, 471, 816ADSCrossRefGoogle Scholar
  23. 23.
    Favata, F., Micela, G., Sciortino, S. 1997, A&A, 326, 647ADSGoogle Scholar
  24. 24.
    Feigelson, E.D. 1996, ApJ, 468, 306ADSCrossRefGoogle Scholar
  25. 25.
    Flaccomio, E., Micela, G., Sciortino, S., Favata, F., Corbally, C., Tomaney, A. 1999, A&A, 345, 521ADSGoogle Scholar
  26. 26.
    Flaccomio, E., Micela, G., Sciortino, S., Damiani, F., Favata, F., Harnden, Jr.,F.R., Schachter, J. 2000, A&A, 355, 651ADSGoogle Scholar
  27. 27.
    Fuente A., Martin-Pintado J., Bachiller R., Neri R., Palla F. 1998, A&A, 334, 253ADSGoogle Scholar
  28. 28.
    Garay G., Lizano S. 1999, PASP, 111, 1049ADSCrossRefGoogle Scholar
  29. 29.
    de Geus, E.J. 1992 A&A, 262, 258ADSGoogle Scholar
  30. 30.
    de Geus, E.J., de Zeeuw, P.T., Lub, J. 1989, A&A, 216, 44ADSGoogle Scholar
  31. 31.
    Ghez, A.M., Neugebauer, G., Matthews, K. 1993, AJ, 106, 2005ADSCrossRefGoogle Scholar
  32. 32.
    Gladwin, P.P., Kitsionas, S., Boffin, H.M.J., Whitworth, A.P. 1999, MNRAS, 302, 305ADSCrossRefGoogle Scholar
  33. 33.
    Gomez, M., Hartmann, L., Kenyon, S.J., Hewett, R. 1993, AJ, 105, 1927ADSCrossRefGoogle Scholar
  34. 34.
    Greene, T.P., Meyer, M.R. 1995, ApJ, 450, 233ADSCrossRefGoogle Scholar
  35. 35.
    Habing H.J., Israel F.P. 1979, ARAA, 17, 345ADSCrossRefGoogle Scholar
  36. 36.
    Herbig, G.H. 1954, ApJ, 119, 483ADSCrossRefGoogle Scholar
  37. 37.
    Herbig, G.H. 1962, ApJ, 135, 736ADSCrossRefGoogle Scholar
  38. 38.
    Herbig, G.H. 1998, ApJ, 497, 736ADSCrossRefGoogle Scholar
  39. 39.
    Herbig, G.H., Terndrup, D.M. 1986, ApJ, 307, 609ADSCrossRefGoogle Scholar
  40. 40.
    Herbst W., Miller, D.P. 1982, AJ, 87, 1478ADSCrossRefGoogle Scholar
  41. 41.
    Hillenbrand L.A. 1995, Ph.D. Thesis, Univ. of MassachusettsGoogle Scholar
  42. 42.
    Hillenbrand L.A, Hartmann, L. 1998, ApJ, 492, 540ADSCrossRefGoogle Scholar
  43. 43.
    Ho, P.T.P, Haschick, A. 1981, ApJ, 309, 514Google Scholar
  44. 44.
    Hollenbach, D.J, Johnstone, D., Lizano, S., Shu, F.H. 1994, ApJ, 428, 654ADSCrossRefGoogle Scholar
  45. 45.
    Hughes, J., Hartigan, P. 1992, AJ, 104, 680ADSCrossRefGoogle Scholar
  46. 46.
    Hughes, J., Hartigan, P., Krautter, J., Kelemen, J. 1994, AJ, 108, 1071ADSCrossRefGoogle Scholar
  47. 47.
    Iben, I., Talbot, R.J. 1966, ApJ, 144, 968ADSCrossRefGoogle Scholar
  48. 48.
    Kenyon, S.J., Brown, D.I., Tout, C.A., Berlind, P. 1998, AJ, 115, 2491ADSCrossRefGoogle Scholar
  49. 49.
    Krautter, J., Wichmann, R., Schmitt, J.H.M.M., Alcalá, J.M., Neuhäsuer, R., Terranegra, L. 1997, A&AS, 123, 103CrossRefGoogle Scholar
  50. 50.
    Kroupa, P. 2000, in Massive Stellar Clusters, eds. A. Lancon & C. Boily (San Francisco: ASP), p. 319Google Scholar
  51. 51.
    Kurtz S., Cesaroni R., Churchwell E., Hofner P., Walmsley CM. 2000, in Protostars and Planets IV, ed. V. Mannings, A.P. Boss & S.S. Russell (Tucson: University of Arizona Press), p. 299Google Scholar
  52. 52.
    Lada, E.A., Lada, C.J. 1995, AJ, 109, 1682ADSCrossRefGoogle Scholar
  53. 53.
    Lada, C.J., Margulis, M., Dearborn, D. 1984, ApJ, 285, 141ADSCrossRefGoogle Scholar
  54. 54.
    Larson, R.B. 1995, MNRAS, 272, 213ADSGoogle Scholar
  55. 55.
    Luhman, K.L. 1999, ApJ, 525, 440ADSCrossRefGoogle Scholar
  56. 56.
    Luhman, K.L., Rieke, G.H. 1999, ApJ, 525, 440ADSCrossRefGoogle Scholar
  57. 57.
    Luhman, K.L., Rieke, G.H., Lada, C.J., Lada, E.A. 1998, ApJ, 508, 347ADSCrossRefGoogle Scholar
  58. 58.
    MacLow, M.M. 1999, ApJ, 524, 169ADSCrossRefGoogle Scholar
  59. 59.
    Martín, E.L., Magazzù, A. 1998, A&A, 342, 173ADSGoogle Scholar
  60. 60.
    Martín, E.L, Montmerle, T., Gregorio-Hetem, J., Casanova, S. 1998, MNRAS, 300, 733ADSCrossRefGoogle Scholar
  61. 61.
    McCaughrean, M.J., Stauffer, J.R. 1994, AJ, 108, 1382ADSCrossRefGoogle Scholar
  62. 62.
    Molinari S., Testi, L., Brand J., Cesaroni R., Palla F. 1998, ApJ, 505, L39ADSCrossRefGoogle Scholar
  63. 63.
    Motte, F., André, P., Neri, R. 1998, A&A, 336, 150ADSGoogle Scholar
  64. 64.
    Nakajima, Y., Tachihara, K., Hanawa, T., Nakano, M. 1998, ApJ, 497, 721ADSCrossRefGoogle Scholar
  65. 65.
    Nakano, T., Hasegawa, T., Norman, C. 1995, ApJ, 450, 183ADSCrossRefGoogle Scholar
  66. 66.
    Natta A., Grinin V., Mannings V. 2000, in Protostars and Planets IV, ed. V. Mannings, A.P. Boss & S.S. Russell (Tucson: University of Arizona Press), p. 599Google Scholar
  67. 67.
    Neuhäuser, R. 2000, Rev. Mod. Astron, in pressGoogle Scholar
  68. 68.
    Neuhäuser, R., Brandner, W. 1998, A&A, 330, L29ADSGoogle Scholar
  69. 69.
    Neuhäuser, R., Comerón, F. 1999, A&A, 350, 612ADSGoogle Scholar
  70. 70.
    Norman, C., Silk, J. 1980, ApJ, 238, 158ADSCrossRefGoogle Scholar
  71. 71.
    Norris, R.P., McCutcheon, W.H., Caswell, J.L, Wellington, K.J, Reynolds, J.E, Peng, R.S., Kesteven, M.J. 1998, Nature, 335, 149ADSCrossRefGoogle Scholar
  72. 72.
    Olmi L., Cesaroni R., Walmsley C.M. 1993, A&A, 276, 489ADSGoogle Scholar
  73. 73.
    Palla, F., Galli, D. 1997, ApJ, 476, L35ADSCrossRefGoogle Scholar
  74. 74.
    Pérez, M.R., Thé, P.S., Westerlund, B.E. 1987, PASP, 99, 1050ADSCrossRefGoogle Scholar
  75. 75.
    Persi, P., Marenzi, A.R., Olofsson, G., et al. 2000, A&A, 357, 219ADSGoogle Scholar
  76. 76.
    Plambeck, R.L., Wright, M.C.H., Carlstrom, J.E. 1990, ApJ, 348, L65ADSCrossRefGoogle Scholar
  77. 77.
    Preibisch, Th., Zinnecker, H. 1999, AJ, 117, 2381ADSCrossRefGoogle Scholar
  78. 78.
    Preibisch, Th., Zinnecker, H., Herbig, G.H. 1996, 310, 456Google Scholar
  79. 79.
    Raboud D., Mermilliod J.-C. 1998, A&A, 333, 897ADSGoogle Scholar
  80. 80.
    Reid, M.J., Haschick, A., Burke, B.F., Moran, J.M., Johnston, K.J., Swenson, G.W. 1981, ApJ, 239, 89ADSCrossRefGoogle Scholar
  81. 81.
    Schwartz, R.D. 1977, ApJS, 35, 161ADSCrossRefGoogle Scholar
  82. 82.
    Schwartz, R.D. 1991, in Low Mass Star Formation in Southern Molecular Clouds, ESO Report No. 11, ed. B. Reipurth, p. 93Google Scholar
  83. 83.
    Sciortino, S., Damiani, F., Favata, F., Micela, G. 1998, A&A, 332, 825ADSGoogle Scholar
  84. 84.
    Shepherd D.S., Churchwell E. 1996, ApJ, 472, 225ADSCrossRefGoogle Scholar
  85. 85.
    Simon, M. 1997, ApJ, 482, L81ADSCrossRefGoogle Scholar
  86. 86.
    Stahler, S.W. 1985, ApJ,ApJ, 293, 207ADSGoogle Scholar
  87. 87.
    Stahler S.W., Palla F., Ho P.T.P. 2000, in Protostars and Planets IV, ed. V. Mannings, A.P. Boss & S.S. Russell (Tucson: University of Arizona Press), p. 327Google Scholar
  88. 88.
    Stecklum, B., et al. 1998, First Circumstellar Disk around a Massive Star (ESO Press Release PR-08-98)Google Scholar
  89. 89.
    Sterzik, M., Alcalá, J.M., Neuhäuser, R., Schmitt, J.H.M.M. 1995, A&A, 297, 418ADSGoogle Scholar
  90. 90.
    Sung, H. Bessell, M.S., Lee, S.W. 1997, AJ, 114, 2644ADSCrossRefGoogle Scholar
  91. 91.
    Terranegra, L., Morale, F., Spagna, A., Massone, G., Lattanzi, M.G. 1999, A&A, 341, L79ADSGoogle Scholar
  92. 92.
    Testi, L., Sargent, A.I. 1998, ApJ, 508, L91ADSCrossRefGoogle Scholar
  93. 93.
    Testi L., Palla F., Natta A. 1999, A&A, 342, 515ADSGoogle Scholar
  94. 94.
    Testi L., Palla F., Prusti, T., Natta, A., Maltagliati, S. 1997, A&A, 320, 159ADSGoogle Scholar
  95. 95.
    Ungerechts, H., Thaddeus, P. 1987, ApJS, 63, 645ADSCrossRefGoogle Scholar
  96. 96.
    van Buren, D., Mac Low, M.-M., Wood, D.O.S., Churchwell, E. 1990, ApJ, 353, 570ADSCrossRefGoogle Scholar
  97. 97.
    Walker, M.F. 1956, ApJS, 2, 365ADSCrossRefGoogle Scholar
  98. 98.
    Walter, F.M., Brown, A., Mathieu, R.D., Myers, P.C., Vrba, F.V. 1988, AJ, 96, 297ADSCrossRefGoogle Scholar
  99. 99.
    Walter, F.M., Vrba, F.J., Mathieu, R.D., Brown, A., Myers, P.C. 1994, AJ, 107, 692ADSCrossRefGoogle Scholar
  100. 100.
    Whittet, D.C.B., Prusti, T., Franco, G.A.P., Gerakines, P.A., Kilkenny, D., Larson, K.A., Wesselius, P.R. 1997, A&A, 327, 1194ADSGoogle Scholar
  101. 101.
    Wichmann, R., Krautter, J., Schmitt, J.H.M.M. et al. 1996, A&A, 312, 439ADSGoogle Scholar
  102. 102.
    Wichmann, R., Covino, E., Alcalá, J.M., Krautter, J., Allain, S., Hauschildt, P.H. 1999, MNRAS, 307, 909ADSCrossRefGoogle Scholar
  103. 103.
    Wilking, B.A., Lada, C.J. 1983, ApJ, 274, 698ADSCrossRefGoogle Scholar
  104. 104.
    Wilking, B.A., Greene, T.P., Meyer, M.R. 1997, AJ, 117, 469ADSCrossRefGoogle Scholar
  105. 105.
    Wood, D.O.S., Churchwell, E. 1989, ApJ, 340, 265ADSCrossRefGoogle Scholar
  106. 106.
    Yorke, H. 1984 in Workshop on Star Formation, ed. R.D. Wolstencroft (Edinburgh: Royal Obs.), 63Google Scholar
  107. 107.
    de Zeeuw, P.T., Hoogerwerf, R., de Bruijne, J.H.J., Brown, A.G.A., Blaauw, A. 1999, AJ, 117, 354ADSCrossRefGoogle Scholar
  108. 108.
    Zhang, Q., Hunter, T.R., Sridharan, T.K. 1998, ApJ, 505, L151ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Francesco Palla
    • 1
  1. 1.Osservatorio Astrofisico di ArcetriFirenzeItaly

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