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High-velocity Clouds

Published online by Cambridge University Press:  03 August 2017

B.P. Wakker*
Affiliation:
University of Illinois, Department of Astronomy, Urbana USA

Extract

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This contribution describes high-velocity clouds (HVCs), neutral hydrogen moving with velocities inexplicable by differential galactic rotation. They have been invoked as evidence for infall of gas to the Galaxy, as manifestations of a galactic fountain, as energy source for the formation of supershells, etc. It is becoming clear that a single model will not suffice to explain all HVCs. A better understanding is mainly hampered by the fact that the distance remains unknown. Many aspects to the study of HVCs will be discussed here.

Type
I. The Disk-Halo Interface in Our Galaxy
Copyright
Copyright © Kluwer 1991 

References

REFERENCES

Bajaja, E., Cappa de Nicolau, C.E., Cersosimo, J.C., Loiseau, N., Martin, M.C., Morras, R., Olano, C.A., Pöppel, W.G.L., 1985, Astrophys. J. Suppl. Ser. 58, 143 CrossRefGoogle Scholar
Bregman, J.N., 1980 Astrophys. J. 236, 577 CrossRefGoogle Scholar
Cohen, R.J., 1981, Monthly Notices Roy. Astr. Soc. 196, 835 CrossRefGoogle Scholar
Cohen, R.J., 1982, Monthly Notices Roy. Astr. Soc. 200, 391 CrossRefGoogle Scholar
Cohen, R.J., Mirabel, I.F., 1979, Monthly Notices Roy. Astr. Soc. 186, 217 CrossRefGoogle Scholar
Cohen, R.J., Ruelas-Mayorga, R.A., 1980, Monthly Notices Roy. Astr. Soc. 193, 583 CrossRefGoogle Scholar
Colgan, S.W.J., Salpeter, E.E., Terzian, Y., 1989, preprint Google Scholar
Cram, T.R., Giovanelli, R., 1976, Astron. Astrophys. 48, 39 Google Scholar
Danly, L., 1989, Astrophys. J. 342, 785 CrossRefGoogle Scholar
Davies, R.D., 1972, Nature 237, 88 CrossRefGoogle Scholar
Dickey, J.M., Garwood, R.W., 1989, Astrophys. J. 341, 201 CrossRefGoogle Scholar
Dieter, N.H., 1964, Astron. J. 69, 288 CrossRefGoogle Scholar
Giovanelli, R., 1977 Astron. Astrophys. 55, 395 Google Scholar
Giovanelli, R., 1980, Astron. J. 85, 1155 CrossRefGoogle Scholar
Giovanelli, R., 1981, Astron. J. 86, 1468 CrossRefGoogle Scholar
Giovanelli, R., Verschuur, G.J., Cram, T.R., 1973, Astron. Astrophys. Suppl. Ser. 12, 209 Google Scholar
Giovanelli, R., Haynes, M.P., 1976, Monthly Notices Roy. Astr. Soc. 177, 525 CrossRefGoogle Scholar
Habing, H.J., 1966, Bull. Astr. Inst. Neth. 18, 323 Google Scholar
Haud, U., 1988, Astron. Astrophys. 198, 125 Google Scholar
Hulsbosch, A.N.M., 1975, Astron. Astrophys. 40, 1 Google Scholar
Hulsbosch, A.N.M., 1978, Astron. Astrophys. 66, L5 Google Scholar
Hulsbosch, A.N.M., Raimond, E., 1966, Bull. Astr. Inst. Neth. 18, 413 Google Scholar
Hulsbosch, A.N.M., Wakker, B.P., 1988, Astron. Astrophys. Suppl. Ser. 75, 191 Google Scholar
Kepner, M.E., 1970, Astron. Astrophys. 5, 444 Google Scholar
van Kuilenburg, J., 1970, Astron. Astrophys. Suppl. Ser. 5, 1 Google Scholar
van Kuilenburg, J., 1972, Astron. Astrophys. 16, 276 Google Scholar
Kutyrev, A.S., 1985, Astron. Tsirk. , No. 1396, p3 Google Scholar
Kutyrev, A.S., Reynolds, R.J., 1989, Astrophys. J. 344, L9 CrossRefGoogle Scholar
Lilienthal, D., Meyerdierks, H., de Boer, K.S., 1990, Astronomy & Astrophysics , in press Google Scholar
Lynden-Bell, D., 1976, Monthly Notices Roy. Astr. Soc. 174, 695 CrossRefGoogle Scholar
Mathewson, D.S., Meng, S.Y., Brundage, W.D., Kraus, J.D., 1966, Astron. J. 71, 863 CrossRefGoogle Scholar
Mathewson, D.S., Cleary, M.N., Murray, J.D., 1974, Astrophys. J. 190, 291 CrossRefGoogle Scholar
Meng, S.Y., Kraus, J.D., 1970, Astron. J. 75, 535 CrossRefGoogle Scholar
Mirabel, I.F., 1989, in Structure and Dynamics of the Interstellar Medium , eds. Tenorio-Tagle, G., Moles, M., Melnick, J., IAU Colloquium 120, Springer Verlag, Berlin Google Scholar
Mirabel, I.F., Morras, R., 1984, Astrophys. J. 279, 86 CrossRefGoogle Scholar
Morras, R., Bajaja, E., 1983, Astron. Astrophys. Suppl. Ser. 51, 131 Google Scholar
Muller, C.A., Oort, J.H., Raimond, E., 1963, C.R. Acad. Sci Paris 257, 1661 Google Scholar
Murai, T., Fujimoto, M., 1980, Publ. Astron. Soc. Japan 32, 581 Google Scholar
Oort, J.H., 1966, Bull. Astr. Inst. Neth. 18, 421 Google Scholar
Oort, J.H., 1978, in Problems of Physics and Evolution of the Universe , ed. Mirzoyan, L., Armenian Acad. Sci., Yerevan, p259 Google Scholar
Oort, J.H., Hulsbosch, A.N.M., 1978, in Astronomical papers dedicated to B. Strömgren , eds. Reiz, A. and Andersen, T., Copenhagen University Observatory, p409 Google Scholar
Payne, H.E., Salpeter, E.E., Terzian, Y., 1980, Astrophys. J. 240, 499 CrossRefGoogle Scholar
Reynolds, R.J., 1987 Astrophys. J. 323, 553 CrossRefGoogle Scholar
Robertson, G., Schwarz, U.J., van Woerden, H., Murray, J.D., Morton, D.A., Hulsbosch, A.N.M., 1990, in preparation Google Scholar
Schwarz, U.J., Sullivan, W.T., Hulsbosch, A.N.M., 1976, Astron. Astrophys. 52, 133 Google Scholar
Schwarz, U.J., Oort, J.H., 1981, Astron. Astrophys. 101, 305 Google Scholar
Schwarz, U.J., van Woerden, H., Wakker, B.P., 1990, in preparation Google Scholar
Scoville, N.Z., Sanders, D.B., 1987, in Interstellar Processes , eds. Hollenbach, D.J. and Thronson, H.A. Jr., (Dordrecht, Reidel), p21 CrossRefGoogle Scholar
Shapiro, P.R., Field, G.B, 1976, Astrophys. J. 205, 762 CrossRefGoogle Scholar
Smith, G.P., 1963, Bull. Astr. Inst. Neth. 17, 203 Google Scholar
Songaila, A., 1981, Astrophys. J. 243, L9 CrossRefGoogle Scholar
Songaila, A., Cowie, L.L., Weaver, H., 1988, Astrophys. J. 329, 580 CrossRefGoogle Scholar
Verschuur, G.L., 1973, Astron. Astrophys. 22, 139 Google Scholar
Verschuur, G.L., 1975, Ann. Rev. Astron. Astrophys. 13, 257 CrossRefGoogle Scholar
Wakker, B.P., 1990a, thesis Groningen, Chapter 3 Google Scholar
Wakker, B.P., 1990b, thesis Groningen, Chapter 6 Google Scholar
Wakker, B.P., Boulanger, F., 1986, Astron. Astrophys. 170, 84 Google Scholar
Wakker, B.P., van Woerden, H., 1990a, thesis Groningen, Chapter 4 Google Scholar
Wakker, B.P., Bregman, J.N., 1990a, thesis Groningen, Chapter 5 Google Scholar
Wakker, B.P., Schwarz, U.J., 1990a, thesis Groningen, Chapter 8 Google Scholar
Wakker, B.P., Vijfschaft, B., Schwarz, U.J., 1990, thesis Groningen, Chapter 9 Google Scholar
Wannier, P., Wrixon, G.T., Wilson, R.W., 1972, Astron. Astrophys. 18, 224 Google Scholar
West, K.A., Pettini, M., Penston, M.V., Blades, J.C., Morton, D.C., 1985, Monthly Notices Roy. Astr. Soc. 215, 481 CrossRefGoogle Scholar
van Woerden, H., Schwarz, U.J. & Wakker, B.P., 1989, in Structure and Dynamics of the Interstellar Medium , eds. Tenorio-Tagle, G., Moles, M., Melnick, J., IAU Colloquium 120, Springer Verlag, Berlin Google Scholar
Wright, M.C.H., 1974, Astron. Astrophys. 31, 317 Google Scholar