Astrophysics and Space Science

, Volume 164, Issue 2, pp 263–276 | Cite as

A comparison of the near-ultraviolet continuum and chromospheric emission line fluxes of the late-type giant stars

  • Kâmuran Avcioglu
  • M. Türker Özkan
  • H. Hüseyin Mentese


We investigate the near-ultraviolet high-resolution LWR spectra of the stars α Cas, β And, α Tau, β Gem, γ Cru, α Boo, and β Peg, obtained with the aid of the International Ultraviolet Explorer Satellite. We have given here a list of the strongest and most prevalent emission lines in the near-ultraviolet spectra of α Boo, KlIIIp, and β Peg, M2.5II-III which have the same luminosity class and different spectral type. The near-ultraviolet continuum flux measurements and integrated emission line fluxes of these stars for the 2500–3200 Å region are presented in order to compare the variations in the appearance of the near-ultraviolet flux distribution with the temperature structure of their chromospheres for K and M giant stars. We also discuss differences between observed and calculated fluxes found from the Planck function.


Emission Line Temperature Structure Flux Measurement Flux Distribution Spectral Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Augason, G. C., Taylor, B. J., Stecker, D. W., Erickson, E. F., and Witteborn, F. C.: 1980,Astrophys. J. 235, 138.Google Scholar
  2. Bogges, A. et al.: 1978,Nature 275, 332.Google Scholar
  3. Breakiron, L. A. and Upgren, A. R.: 1979,Astrophys. J. Suppl. 41, 709.Google Scholar
  4. Carpenter, K. G., Wing, R. F., and Stencel, R. E.: 1985,Astrophys. J. Suppl. 57, 405.Google Scholar
  5. Dupree, A. K.: 1980,Highlights of Astronomy 5, 263.Google Scholar
  6. Flower, P. J.: 1977,Astron. Astrophys. 54, 31.Google Scholar
  7. Fracassini, M., Pasinetti, L. E., and Manzolini, F.: 1981,Astron. Astrophys. Suppl. 45, 145.Google Scholar
  8. Grenon, M. and Rufener, F.: 1981,Astron. Astrophys. Suppl. 46, 25.Google Scholar
  9. Griffin, R.: 1976,Monthly Notices Roy. Astron. Soc. 175, 225.Google Scholar
  10. Griffin, R. and Redman, R. O.: 1960,Monthly Notices Roy. Astron. Soc. 120, 287.Google Scholar
  11. Keenan, P. C.: 1963, in K. Aa. Strand (ed.),Basic Astronomical Data, University of Chicago Press, Chicago, p. 78.Google Scholar
  12. Keenan, P. C. and Keller, G.: 1953,Astrophys. J. 117, 241.Google Scholar
  13. Keenan, P. C. and Morgan, W. W.: 1951, in J. A. Hynek (ed.),Astrophysics — A Topical Symposium, McGraw-Hill Book Co., Inc., New York, p. 12.Google Scholar
  14. Keenan, P. C. and Pitts, R. E.: 1980,Astrophys. J. Suppl. 42, 541.Google Scholar
  15. Kondo, Y., Morgan, T. H., and Modisette, J. L.: 1975,Astrophys. J. 196, L125.Google Scholar
  16. Kondo, Y., Morgan, T. H., and Modisette, J. L.: 1976,Astrophys. J. 207, 167.Google Scholar
  17. Linsky, J. L.: 1980,Ann. Rev. Astron. Astrophys. 18, 439.Google Scholar
  18. Mäckle, R., Holweger, H., Griffin, R., and Griffin, R.: 1975,Astron. Astrophys. 38, 239.Google Scholar
  19. McClintock, W., Linsky, J. L., Henry, R. C., Moos, H. W., and Gerola, H.: 1975,Astrophys. J. 202, 165.Google Scholar
  20. Meggers, W. F., Corlis, C. H., and Scribner, B. F.: 1975,Tables of Spectral-Line Intensities, Part II,Arranged by Wavelengths.Google Scholar
  21. Moore, C. E.: 1962,An Ultraviolet Multiplet Table, Sections 3, 4, 5.Google Scholar
  22. Morgan, W. W. and Keenan, P. C.: 1973,Ann. Rev. Astron. Astrophys. 11, 29.Google Scholar
  23. Morgan, W. W., Keenan, P. C., and Kellman, E.: 1943,An Atlas of Stellar Spectra, University of Chicago Press, Chicago.Google Scholar
  24. Soloviev, A. V.: 1948,Perem'ennie Zvezdy 6, 289.Google Scholar
  25. Stencel, R. E. and van der Hucht, K. A.: 1978,Astrophys. J. Suppl. 38, 29.Google Scholar
  26. Stickland, D. J. and Sanner, F.: 1981,Monthly Notices Roy. Astron. Soc. 197, 791.Google Scholar
  27. Van der Hucht, K. A., Stencel, R. E., Haisch, B. M., and Kondo, Y.: 1979,Astron. Astrophys. Suppl. 36, 377.Google Scholar
  28. Wing, R. F.: 1978a,Spectral Classifications and Color Temperatures for 280 Bright Stars in the Range K4–M8, Astronomy Department, The Ohio State University.Google Scholar
  29. Wing, R. F.: 1978b, in M. Hack (ed.),High Resolution Spectrometry, Osservatorio Astronomico di Trieste, p. 683.Google Scholar
  30. Wing, R. F. and Carpenter, K. G.: 1978,Bull. Amer. Astron. Soc. 10, 444.Google Scholar
  31. Wing, R. F., Carpenter, K. H., and Wahlgren, G. M.: 1983,Atlas of High Resolution IUE Spectra of Late-Type Stars, Special publication, No. 1, Perkins Observatory, The Ohio State University and Ohio Wesleyan University.Google Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Kâmuran Avcioglu
    • 1
  • M. Türker Özkan
    • 1
  • H. Hüseyin Mentese
    • 1
  1. 1.Department of Astronomy and Space Sciences, Faculty of ScienceUniversity of IstanbulTurkey

Personalised recommendations