Solar Physics

, Volume 25, Issue 2, pp 357–379 | Cite as

Physical properties of solar chromospheric plages

I. Line profiles of the CaII H, K, and infrared triplet lines
  • Richard A. Shine
  • Jeffrey L. Linsky


Double pass photoelectric observations are presented of five Caii lines (H, K, 8498 Å, 8542 Å, and 8662 Å) in a number of solar plages of different degrees of activity, quiet regions, and a sunspot. The data are compared with previous work. All five lines show increasing emission together in plages and the least opaque of the infrared triplet lines appears to exhibit core emission prior to the more opaque members of the multiplet. The question of source function equality is considered and the differences and similarities among plage profiles and between plage and quiet profiles are shown qualitatively and quantitatively.


Source Function Function Equality Double Pass Quiet Region Photoelectric Observation 
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. Brault, J. W., Slaughter, C. O., Pierce, A. K., and Aikens, R. S.: 1971, Solar Phys. 18, 366.Google Scholar
  2. Brault, J. W. and White, O. R.: 1971, Astron. Astrophys. 13, 169.Google Scholar
  3. Carbon, D., Gingerich, O., and Kurucz, R.: 1968, Solar Phys. 3, 55.Google Scholar
  4. d'Azambuja, L. and d'Azambuja, M.: 1937, Compt. Rend. Acad. Sci. 205, 554.Google Scholar
  5. De Jager, C. and Neven, L.: 1967, Bull. Astron. Inst. Neth. Suppl. Series 1, 325.Google Scholar
  6. Engvold, O.: 1967, Solar Phys. 2, 234.Google Scholar
  7. Gingerich, O., Noyes, R. W., Kalkofen, W., and Cuny, Y.: 1971, Solar Phys. 18, 347.Google Scholar
  8. Goldberg, L., Mohler, O. C., and Muller, E. A.: 1959, Astrophys. J. 129, 119.Google Scholar
  9. Holweger, H.: 1970, Astron. Astrophys. 4, 11.Google Scholar
  10. Houtgast, J.: 1970, Solar Phys. 15, 273.Google Scholar
  11. Linsky, J. L.: 1968, Smithsonian Spec. Rept., No. 290.Google Scholar
  12. Linsky, J. L.: 1970, Solar Phys. 11, 355.Google Scholar
  13. Linsky, J. L. and Avrett, E. H.: 1970, Publ. Astron. Soc. Pacific 82, 169.Google Scholar
  14. Linsky, J. L., Teske, R. G., and Wilkinson, C. W.: 1970, Solar Phys. 11, 374.Google Scholar
  15. Liu, S. Y. and Sheeley, N. R.: 1971, Solar Phys. 20, 282.Google Scholar
  16. Mount, G. H.: 1968, unpublished.Google Scholar
  17. Mustel, E. R. and Tsap, T. T.: 1968, Izv. Krymsk. Astrofiz. Obs. 20, 74.Google Scholar
  18. Pierce, A. K.: 1971, private communication.Google Scholar
  19. Sheeley, N. R.: 1967, Astrophys. J. 147, 1106.Google Scholar
  20. Smith, E. van P.: 1969, Astrophys. J. 132, 202.Google Scholar
  21. Stair, R., Schneider, W. E., and Jackson, J. K.: 1963, Appl. Opt. 2, 1151.Google Scholar
  22. Teske, R. G.: 1967, Publ. Astron. Soc. Pacific 79, 110.Google Scholar
  23. Title, A.: 1966, Selected Spectroheliograms, Mount Wilson and Palomar Observatories, Pasadena.Google Scholar
  24. White, O. R. and Suemoto, Z.: 1968, Solar Phys. 3, 523.Google Scholar
  25. Zirker, J. B.: 1965, Smithsonian Spec. Rept., No. 174, p. 397.Google Scholar

Copyright information

© D. Reidel Publishing Company 1972

Authors and Affiliations

  • Richard A. Shine
    • 1
  • Jeffrey L. Linsky
    • 1
  1. 1.Joint Institute for Laboratory Astrophysics, University of ColoradoBoulderU.S.A.

Personalised recommendations