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X-ray ionization of protostellar disks

Published online by Cambridge University Press:  25 May 2016

A.E. Glassgold ,
J. Igea  and
J. Najita
A.E. Glassgold
Affiliation:
New York University, New York, NY 10003, USA
J. Igea
Affiliation:
New York University, New York, NY 10003, USA
J. Najita
Affiliation:
Center for Astrophysics, Cambridge, MA 02138, USA

Abstract

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X-rays from young stellar objects can influence the physical properties of their surroundings. A particularly interesting example is the ionization of the accretion disk by hard X-rays at distances of the order of 1 AU or more. We show that X-rays induce a layered ionization structure in which the outer layer is sufficiently ionized to permit the Balbus-Hawley instability to operate and to allow accretion.

Type
Star Formation
Information
Symposium - International Astronomical Union , Volume 178: Molecules in Astrophysics: Probes and Processes , 1997 , pp. 155 - 162
Copyright
Copyright © Kluwer 1997 

References

Balbus, S.A., Hawley, J.F. 1991, ApJ, 376, 214.CrossRefGoogle Scholar
Blaes, O.M., Balbus, S.A. 1994, ApJ, 421, 163.Google Scholar
Carkner, L., Feigelson, E.D., Koyama, K., Montmerle, T., Reid, I.N. 1996, ApJ, 464, 286.Google Scholar
Casanova, S., Montmerle, T., Feigelson, E.D., André, P. 1995, ApJ, 439, 752.Google Scholar
Feigelson, E.D., De Campli, W. 1981, ApJ, 243, L89.Google Scholar
Feigelson, E.D., Casanova, S., Montmerle, T., Guibert, J. 1993, ApJ, 416, 623.Google Scholar
Gammie, C. F. 1996, ApJ, 457, 355.Google Scholar
Glassgold, A.E., Najita, J., Igea, J. 1996, ApJ, in press.Google Scholar
Halpern, J.P., Grindlay, J.E. 1980, ApJ, 242, 1041.Google Scholar
Hayashi, C., Nakazawa, K., Nakagawa, Y. 1985, in Protostars & Planets II, eds. Black, D. C. Mathews, M. S. (Tucson: University of Arizona).Google Scholar
Henke, B.L., Gullikson, E.M., Davis, J.C. 1993, At. Data Nuc. Data, 54, 181.Google Scholar
Koyama, K., Ueno, S., Kobayashi, N., Feigelson, E.D. 1996, preprint.Google Scholar
Krolik, J.H., Kallman, T.R. 1983, ApJ, 267, 610.Google Scholar
Ku, W. K.-H., Chanan, G.A. 1979, ApJ, 234, L59.Google Scholar
Langer, W.D. 1978, ApJ, 225, 860.Google Scholar
Lepp, S., Dalgarno, A. 1996, A&A, 306, L21.Google Scholar
Lepp, S., McCray, R.M. 1983, ApJ, 269, 560.Google Scholar
Maloney, P.R., Hollenbach, D.J., Tielens, A.G.G.M. 1996, ApJ, 466, 561.Google Scholar
Montmerle, T., Casanova, S. 1995, RevMexAA, 1, 329.Google Scholar
Montmerle, T., Koch-Miramond, L., Falgarone, E., Grindlay, J. 1983, ApJ, 269, 182.Google Scholar
Morrison, R., McCammon, D. 1983, ApJ, 270, 119.CrossRefGoogle Scholar
Neufeld, D.A., Maloney, P.R. Conger, S. 1994, ApJ, 436, L12.CrossRefGoogle Scholar
Preibisch, Th., Neuhauäser, R., Alcalá, J.M. 1995, A&A, 304, L13.Google Scholar
Preibisch, Th., Zinnecker, H., Schmitt, J.H.M.M. 1993, A&A, 279, L33.Google Scholar
Shu, F.H. 1997, this volume.Google Scholar
Shu, F.H., Najita, J., Ruden, S.P., Lizano, S. 1994, ApJ, 429, 797.Google Scholar
Silk, J., Norman, C. 1983, ApJ, 272, L49.Google Scholar
Spitzer, L., Tomasko, M.G. 1968, ApJ, 152, 971.CrossRefGoogle Scholar
Sternberg, A., Yan, M., Dalgarno, A. 1997, this volume.Google Scholar
Tarter, B., Tucker, W.H., Salpeter, E.E. 1969, ApJ, 156, 943.Google Scholar
Tarter, B., Salpeter, E.E. 1969, ApJ, 156, 953.CrossRefGoogle Scholar
Umebayashi, T., Nakano, T. 1988, Prog. Theor. Phys. Suppl., 96, 151.CrossRefGoogle Scholar
Umebayashi, T., Nakano, T. 1981, PASJ, 33, 617.Google Scholar
Voit, M. 1991, ApJ, 377, 158.Google Scholar
Walter, F.M., Kuhi, L.V. 1981, ApJ, 284, 194.Google Scholar