Abstract
We summarize models of self-gravitating, filamentary molecular clouds that are threaded by helical magnetic fields. We review the observational evidence suggesting that some clouds may exist in this regime. An analytic limit is derived that demonstrates why the Fiege & Pudritz model always tends to an ~ r -(1.9±0.1) density profile at large radius, in agreement with observations. An equation is also derived for the radial compression or expansion of filamentary clouds that are out of equilibrium. We use this analysis to show that filamentary clouds are extremely stable with respect to radial collapse or expansion, which allows them to survive long enough to fragment gravitationally along their axes. Fragmenting, helically magnetized filaments have a unique kinematic signature, which is discussed and compared with recent observations. We discuss models of prolate cores that form within filaments. Polarimetry models of filaments are discussed and compared with the data.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Alves J., Lada C.J., Lada E.A., Kenyon S.J., Phelps R., 1998, Ap.J., 506, 292
Arons J., Max C.E., 1975, Ap.J., 196, L77
Ballesteros-Paredes J., Vazquez-Semadeni E., Scalo J., 1999, Ap.J., 515, 286
Bally J., 1989, in Proceedings of the ESO Workshop on Low Mass Star Formation and Pre-main Sequence Objects, ed. Bo Reipurth; Publisher, European Southern Observatory, Garching bei Munchen
Bally J., Stark A.A., Wilson, R.W., Langer, W.D., 1987, Ap.J., 312L, 45
Bonnor W.B., 1956, MNRAS, 116, 351
Boulares A., Cox D.P., 1990, Ap.J., 365, 544
Carlqvist P., 1998, Ap.&S.S., 144, 73
Carlqvist P., Gahm G., 1992, IEEE Trans. on Plasma Science, vol. 20, no. 6, 867
Carlqvist P., Kristen H., 1997, A&A, 324, 1115
Caselli P., Myers P.C., 1995, Ap.J., 446, 665
Chandrasekhar S., Fermi E., 1953, Ap.J. 118, 116
Chromey F.R., Elmegreen B.G., Elmegreen D.M., 1989, Ap.J., 98, 2203
Curry, Charles L., 2000, Ap.J., 541, 831
Curry C.L, Stahler S.W., 2001, Ap.J., 555, 160
Dutrey A., Langer W.D., Bally J., Duvert G., Castets A., Wilson R.W., 1991, A&A, 247, L9
Ebert R., 1955, Z.Astrophys., 37, 217
Falgarone E., Pety J., Phillips T.G., 2001, Ap.J., 555, 178
Fiege J.D., Matthews B.C., Moriarty-Schieven G., 2002, in preparation
Fiege, J.D.; Pudritz, R.E., 2000, MNRAS, 311, 85 (FP1)
Fiege, J.D.; Pudritz, R.E., 2000, MNRAS, 311, 105 (FP2)
Fiege, J.D.; Pudritz, R.E., 2000, Ap.J., 534, 291 (FP3)
Fiege, J.D.; Pudritz, R.E., 2000, Ap.J., 544, 830 (FP4)
Fuller G.A., Myers P.C., 1992, Ap.J., 384, 523
Fuller G.A., Myers P.C., 1993, Ap.J., 418, 273
Gehman C.S., Adams F.C., Watkins R., 1996, Ap.J., 472, 673
Habe A., Uchida Y., Ikeuchi S., Pudritz R.E., 1991, PASJ, 43, 703
Heitsch F., Zweibel E.G., Mac Low M., Li P., Norman M.L., 2001, Ap.J., 561, 800
Hildebrand, Roger H., 1988, QJRAS, 29, 327
Johnstone D., Bally J., 1999, Ap.J., 510, 49L
Johnstone, Doug; Fich, Mike; Mitchell, George F.; Moriarty-Schieven, G., 2001, Ap.J., 559, 307
Jones, C. E, Basu, S., Dubinski, J., 2001, Ap.J., 551, 387
Lada C.J., Alves J., Lada E.A., 1999, Ap.J. 512, 250
Lazarian, A.; Goodman, Alyssa A.; Myers, Philip C., 1997, Ap.J., 490, 273
Maddalena R.J., Morris M., Moscowitz J., Thaddeus P., 1986, Ap.J., 303, 375
Matthews B.C., Fiege J.D., Moriarty-Schieven G., 2002, Ap.J., 569 304
Matthews B.C., Wilson C.D., 2000, Ap.J., 531, 868
Matthews B.C., Wilson C.D., Fiege J.D., 2001, Ap.J., 562, 400
McCrea W.H., 1957, MNRAS, 117, 562
McKee C.F., Zweibel E., 1995, Ap.J., 440, 686
McLaughlin D.E., Pudritz R.E., 1996, Ap.J., 496, 194
Mitchell, George F.; Johnstone, Doug; Moriarty-Schieven, Gerald; Fich, Michel; Tothill, N. F. H., 2001, Ap.J., 556, 215
Mouschovias T., 1976, Ap.J., 207, 141
Myers P.C., Fuller G.A., Goodman A.A., Benson P.J., 1991, Ap.J., 376, 561
Myers P.C., Goodman A.A., 1988, Ap.J., 326, L27
Myers P.C., Goodman A.A., 1988, Ap.J., 329, 392
Nagasawa M., 1987, Prog. Theor. Phys., 77, 635
Nakamura F., Hanawa T., Nakano T., 1993, PASJ, 45, 551
Ostriker J., 1964, Ap.J., 140, 1056
Ouyed R., Pudritz R. E., 1997, ApJ, 482, 712
Padoan P, Goodman A., Draine B.T, Juvela M., Nordlund A, Rognvaldsson O.E., 2001, Ap.J., 556, 1005
Ryden, B.S., 1996, Ap.J., 471, 822
Sanders, D. B.; Scoville, N. Z.; Solomon, P. M., 1985, Ap.J., 289, 373
Schneider S., Elmegreen B.G., 1979, Ap.J., 41, 87
Schleuning D.A., 1998, Ap.J., 493, 811
Stodólkiewicz J.S., 1963, Acta Astron., 13, 30
Spitzer L. Jr., 1978, Physical Processes in the Interstellar Medium (John Wiley & Sons: New York)
Tomisaka K., Ikeuchi S., Nakamura T., 1988a, Ap.J., 326, 208
Tomisaka K., Ikeuchi S., Nakamura T., 1988b, Ap.J., 335, 239
Tomisaka K., Ikeuchi S., Nakamura T., 1989, Ap.J., 341, 220
Tomisaka K., Ikeuchi S., Nakamura T., 1990, Ap.J., 362, 202
Lee H.M., Draine B.T., Ap.J., 1985, 290, 211
Vazquez-Semadeni E., Ostriker C., Passot T., Gammie C.F., Stone J.M., 2000, in Protostars and Planets IV, ed. Mannings V., Boss A.P., Russell, S.S. (Tucson: University of Arizona Press), p.3
Wardle M., Königl A., 1990, Ap.J., 362, 120
Weintraub D.A., Goodman A.A., Akeson R.L., 2000, in Protostars and Planets IV, ed. Mannings V., Boss A.P., Russell, S.S. (Tucson: University of Arizona Press), in press
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2003 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Fiege, J.D. (2003). The Structure and Dynamics of Filamentary Molecular Clouds. In: Falgarone, E., Passot, T. (eds) Turbulence and Magnetic Fields in Astrophysics. Lecture Notes in Physics, vol 614. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36238-X_11
Download citation
DOI: https://doi.org/10.1007/3-540-36238-X_11
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-00274-1
Online ISBN: 978-3-540-36238-8
eBook Packages: Springer Book Archive