Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2025-01-06T02:39:57.440Z Has data issue: false hasContentIssue false
  • English
  • Français

Ultraviolet Spectroscopic Measurements of Cool Stars

Published online by Cambridge University Press:  30 March 2016

A. K. Dupree
A. K. Dupree*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, U.S.A.

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A vast increase in the amount of information on cool stars has occurred during the past 3 years starting with the spectroscopy of the brightest objects from the Princeton experiment on Copernicus, the near ultraviolet balloon measurements from BUSS, low dispersion observations in the far ultraviolet from rocket instruments, and most recently, spectra from the International Ultraviolet Explorer satellite (IUE). IUE now gives access to a wide variety of cool stars and stellar systems enabling systematic studies to be made.

Drawing on the most recent material from IUE, we discuss the presence and structure of chromospheres and coronae in single stars of varying gravities, surface temperatures, and activity. Evidence of mass loss and the concurrent presence of a corona are also noted. Binary systems of late-type stars (the RS CVn and W UMa type) are briefly discussed since they display extremes of surface activity. A binary system such as VV Cep containing a late-type star and an early-type companion provides a unique probe of cool extended stellar atmospheres.

Type
Ultraviolet Astronomy-New Results from Recent Space Experiments
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 263 - 276
Copyright
Copyright © Cambridge University Press 1980

References

Basri, G.B., and Linsky, J.L.: 1979, Astrophys. J. in press.Google Scholar
Bohm-Vitense, E., and Dettmann, T.: 1979, preprint.Google Scholar
Brown, A., Jordan, C., and Wilson, R.: 1979, in Proc. Symp. “The First Year of IUE”, in press.Google Scholar
Carpenter, K.G., and Wing, R.F.: 1979, Bull. Am. Astron. Soc. 11, p. 419.Google Scholar
Cruddace, R., and Dupree, A.K.: 1979, personal communication.Google Scholar
Dupree, A.K.: 1976, in “Physique des Mouvements dans les Atmospheres Stellaires”, ed. Cayrel, R. and Steinberg, M., Editions du Centre National de la Recherche Scientifique, p. 439.Google Scholar
Dupree, A.K., Black, J.H., Davis, R.J., Hartmann, L., and Raymond, J.C.: 1979, in Proc. Symp. “The First Year of IUE”, in press.Google Scholar
Dupree, A.K., and Hartmann, L.: 1979 “Turbulence in Stellar Atmospheres”, Proc. IAU Colloq, No. 51, in press.Google Scholar
Faraggiana, R., and Selvelli, P.L.: 1979, Astron. Astrophys. 76, L18.Google Scholar
Gahm, G.F., Fredga, K., Liseau, R., and Dravins, D.: 1979, Astron. Astrophys. 73, L4.Google Scholar
Gondhalekar, P.M., Penston, M.V., and Wilson, R.: 1979, in Proc. Symp. “The First Year of IUE”, in press.Google Scholar
Hack, M., and Selvelli, P.L.: 1979, Astron. Astrophys. 75, p. 316.Google Scholar
Hagen, W., Black, J., Dupree, A.K., and Holm, A.: 1980, Astrophys. J., in press.Google Scholar
Hartmann, L., Davis, R.J., Dupree, A.K., Raymond, J.C., Schmidtke, P.C., and Wing, R.F.: 1979, Astrophys. J. Letters, in press.Google Scholar
Hartmann, L., Dupree, A.K., and Raymond, J.C.: 1979, Astrophys. J. Letters, submitted.Google Scholar
Hearn, A.G.: 1975, Astron. Astrophys. 40, p. 355.Google Scholar
Kondo, Y., Morgan, T.H., and Modisette, J.L.: 1976, Astrophys. J. 207, p. 167.Google Scholar
Linsky, J.L., and Haisch, B.: 1979, Astrophys. J. Letters 229, L27.Google Scholar
Linsky, J.L. et al.: 1978, Nature 275, p.389.Google Scholar
McClintock, W., Henry, R.C., Moos, H.W., and Linsky, J.L.: 1975, Astrophys. J. 202, p. 733.Google Scholar
Mullan, D.J.: 1978, Astrophys. J. 226, p. 151.CrossRefGoogle Scholar
Mullan, D.J., and Stencel, R.: 1979, personal communication.Google Scholar
Pagel, B.E.J., and Wilkens, D.R.: 1979, in Proc. Symp. “The First Year of IUE”, in press.Google Scholar
Raymond, J.C., Noyes, R.W., and Stopa, M.P.: 1979, Solar Phys. 61, p. 271.Google Scholar
Reimers, D.: 1977, Astron. Astrophys. 57, p.395.Google Scholar
Stencel, R.E., Rondo, Y., Bernat, A.P., and McCluskey, G.E.: 1979, preprint.Google Scholar
van der Hucht, K.A., Bernat, A.P., and Rondo, Y.: 1979, Astron. Astrophys., in press.Google Scholar
Weiler, E.J., and Oegerle, W.R.: 1979, Astrophys. J. Suppl. 39, p. 537.Google Scholar
Wing, R.F.: 1978, in “High Resolution Spectrometry” (ed. Hack, M.), Proc. of the 4th International Colloq. on Astrophysics, p. 683.Google Scholar
Wing, R.: 1979, personal communication.Google Scholar