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Chromospheres, Coronae and Mass Loss in Solar and Late-Type Stars

Published online by Cambridge University Press:  30 March 2016

Carole Jordan
Carole Jordan*
Affiliation:
Department of Theoretical Physics, University of Oxford

Extract

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Until observations in the EUV spectral region became available the existence of hot extended envelopes aroung latetype stars was inferred from the presence of visible and near infrared region lines which cannot be formed in radiative equilibrium within the stellar photospheres. The traditional indicators of stellar chromospheres have been the Ca II H and K lines, particularly the presence of emission components, the He I 10830 A triplet, the He II 4686 A line and emission in various hydrogen Balmer and Paschen lines. When observations from rockets and satellites become possible the strong lines of Mg II at 2800 A and the H Lya line at 1216 A could also be included in the modelling of stellar chromospheres. The new spectra from IUE allow not only stellar chromospheres to be studied but also stellar transition regions, should hot coronae exist.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 533 - 540
Copyright
Copyright © Cambridge University Press 1980

References

Ayres, T.R. and Linsky, J.L.: 1975, Astrophys. J. 200, 660.CrossRefGoogle Scholar
Ayres, T.R. and Linsky, J.L.: 1979a, Astrophys. J., in press.Google Scholar
Ayres, T.R. and Linsky, J.L.: 1979b, Bull. Am. Astr. Soc. 11, 472.Google Scholar
Ayres, T.R., Linsky, J.L. and Shine, R.A.: 1974, Astrophys. J. 192, 93.CrossRefGoogle Scholar
Ayres, T.R., Linsky, J.L., Rodgers, A.W. and Kurucz, R.L.: 1976, Astrophys. J. 210, 199.Google Scholar
Ayres, T.R.: 1979, Astrophys. J. 228, 509.CrossRefGoogle Scholar
Baluinas, S.L., Avrett, E.H., Hartmann, L.W. and Dupree, A.K.: 1979, Astrophys. J., in press.Google Scholar
Basri, G.S. and Linsky, J.L.: 1979, Astrophys. J., in press.Google Scholar
Bernat, A.P.: 1977, Astrophys. J. 212, 756.Google Scholar
Bernat, A.P. and Lambert, D.L.: 1976, Astrophys. J. 204, 830.CrossRefGoogle Scholar
Brown, A., Jordan, C., and Wilson, R.: 1979, Proc of Symposium ‘The First Year of IUE’, in press.Google Scholar
Burton, W.M., Jordan, C., Ridgeley, A., and Wilson, R.: 1971, Phil. Trans. Roy. Soc. Lond. A 270, 81.Google Scholar
Carpenter, K.G. and Wing, R.F.: 1979, Bull. Am. Astr. Soc. 11, 419.Google Scholar
Cash, W., Bowyer, S., Charles, P.A., Lampton, M., Gannire, G., and Riegler, G.: 1978, Astrophys. J. Lett. 223, L21.Google Scholar
Doherty, L.R.: 1972, Astrophys. J. 178, 495.Google Scholar
Dupree, A.K., Black, J.H., Davis, R.J., Hartmann, L., and Raymond, J.C.: 1979, Proc. Symposium ‘The First Year of IUE’, in press.Google Scholar
Engvold, O. and Rygh, B.O.; 1978, Astron, and Astrophys. 70, 399.Google Scholar
Evans, R.G., Jordan, C., and Wilson, R.: 1975, Mon. Not. Roy. Astr. Soc. 172, 585.Google Scholar
Fosbury, F.A.E.: 1973, Astron. and Astrophys. 27, 129.Google Scholar
Hagen, W.: 1978, Astrophys. J. Lett. 222, L37.Google Scholar
Hartmann, L., Davis, R., Dupree, A.K., Raymond, J., Schmldtke, and Wing, R.F.: 1979, Astrophys. J., in press.Google Scholar
Hearn, A.G.: 1975, Astron. and Astrophys. 40, 355.Google Scholar
Hearn, A.G.: 1977, Sol. Phys. 51, 159.Google Scholar
Hucht, van der, K.A., Bernat, A.P. and Kondo, Y.: 1979, Astron. and Astrophys., in press.Google Scholar
Jordan, C. and Wilson, R.: 1971 in ‘Physics of the Solar Corona’ (ed. Macris, ) D. Reidel Publ. Co., Dordrecht, Holland, p. 211.Google Scholar
Jordan, C.: 1975, IAU Symposium 68 (Ed. Kane, ), 109.Google Scholar
Jordan, C.: 1976, Phil. Trans. Roy. Soc. Lond A 281, 391.Google Scholar
Jordan, C.: 1979, Astron, and Astrophys., in press.Google Scholar
Kelch, W.L.: 1978, Astrophys. J. 232, 931.Google Scholar
Kelch, W.L., Linsky, J.L., Basri, G.S., Chiu, H.Y., Chang, S.H., Maran, J.P. and Furenlld, I.: 1978, Astrophys. J. 220, 962.Google Scholar
Kelch, W.L., Linsky, J.L. and Worden, S.P.: 1979, Astrophys. J. 229, 700.Google Scholar
Kondo, Y., Giudi, R.T., Modisette, J.L. and Rydgren, A.E.: 1972, Astrophys. J. 176, 153.Google Scholar
Kondo, Y., Morgan, T.H. and Modisette, J.C.: 1975, Astrophys. J. Lett. 197, L125.Google Scholar
Kondo, Y., Jager, C.de., Hoekstra, R., Hucht, K.A., Van der, Kamperman, T.M., Lamers, J.G.L.M., Modisette, J.L. and Morgan, J. H: 1979, Astrophys. J. 230, 526.Google Scholar
Kudritzki, R.P. and Reimers, D.: 1978, Astron, and Astrophys. 70, 227.Google Scholar
Linsky, J.L. and Ayres, T.R.: 1978, Astrophys. J. 220, 619.Google Scholar
Linsky, J.L., Worden, S.P., McClintock, W., and Robertson, R.M.: 1979, Astrophys. J. Suppl., in press.Google Scholar
Linsky, J.L. and Haisch, B.M.: 1979, Astrophys. J. Lett. 229, L27.Google Scholar
Linsky, J.L., Ayres, T.R., Basri, G.S., Morrison, M.D., Boggess, A., Machetto, R., Wilson, R., Cassatella, A., Heck, A., Holan, A. Strickland, D., Schiffer, F.H., Blanco, C., Dupree, A.K., Jordan, C. and Wing, R.F.: 1978, Nature 225, 19.Google Scholar
Loore, C.de: 1970, Astrophys. Space. Sci. 6, 60.Google Scholar
Lutz, T.E. and Pagel, B.E.J.: 1979, Mon. Not. R. Astr. Soc., in press.Google Scholar
McClintock, W., Linsky, J.L., Henry, R.C., Moos, H.W., and Gerola, H.: 1975, Astrophys. J. 202, 165.CrossRefGoogle Scholar
McKinney, W.R., Moos, H.W., and Giles, J.W.: 1976, Astrophys. J. 205, 848.Google Scholar
McWhirter, R.W.P., Thonemann, P.C. and Wilson, R. 1975, Astron, and Astrophys. 40, 63.Google Scholar
Nugent, J. and Garmire, G.: 1978, Astrophys. J. Lett. 226, L83.Google Scholar
Pottasch, S.R.: 1964, Space Sci. Rev. 3, 816.Google Scholar
Reimers, D.: 1977a, Astron. and Astrophys. 57, 395.Google Scholar
Reimers, D.: 1977b, Astron. and Astrophys. 61, 217.Google Scholar
Renzini, A., Cacciari, C., Ulmschneider, P. and Schmitz, F.: 1977, Astron. and Astrophys. 61, 39.Google Scholar
Sanner, F.: 1976, Astrophys. J. Suppl. 32, 115.Google Scholar
Scharmer, G.B.: 1976, Astron. and Astrophys. 53, 341.Google Scholar
Stencel, R.: 1978, Astrophys. J. Lett. 222, L37.Google Scholar
Stencel, R., Kondo, Y., Bernat, A.P. and McCluskey, G.E.: 1979, Astrophys. J., in press.Google Scholar
Ulmschneider, P., Schmitz, F., Renzini, A., Cacciari, C., Kalkofen, W. and Kurucz, R.L.: 1977, Astron. and Astrophys. 61, 515.Google Scholar
Weiler, E.J. and Oegerle, W.R.: 1979, Astrophys. J. Suppl. 39, 537.Google Scholar
Wilson, O.C.: 1976, Astrophys. J. 205, 823.Google Scholar
Wilson, O.C. and Bappu, M.K.V.: 1957, Astrophys. J. 125, 661.Google Scholar
Wilson, O.C.: 1978, Astrophys. J. 226, 379.Google Scholar
Zirin, H.: 1976, Astrophys. J. 208, 414.Google Scholar