Skip to main content
SpringerLink
Log in

Absorption line profiles and rotational velocities for 59 stars

  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

Absorption lines of Heii, Hei, Mgii, and other ions have been measured in coudé spectral tracings for 59 slowly and rapidly rotating sourthern O, B and A stars on the Main Sequence. All 668 separate line profiles have been analyzed with a procedure of differential corrections by least-squares to yield the following parameters and their error estimates: half-width, central depth, equivalent width, and shape parameter. The shape parameter includes Voigt profiles and also ‘super-Gaussian’ and ‘super-damping’ profiles. In addition, separately-measured line profiles in each star have been superimposed to yield better composite profiles with smaller errors. In addition, a preliminary value ofv sini is derived for each line by deconvolving it with both the intrinsic and instrumental profiles, and a mean value (including error bar) is derived for each star. The resulting mean values ofv sini are only about 2/3 as large as the earlier results presented by Buscombe (1969). The inadequacies of the traditional procedure are discussed, and plans for using calculated non-LTE intrinsic line profiles including line limb darkening and also effects of rotational distortion, will be outlined.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Allen, C. W.: 1963,Astrophysical Quantities, Athlone Press, London, pp. 81–82.

    Google Scholar 

  • Buscombe, W.: 1969,Monthly Notices Roy. Astron. Soc. 144, 1.

    Google Scholar 

  • Collins, G. W.: 1974,Astrophys. J. 191, 157.

    Google Scholar 

  • Stoeckley, T. R.: 1968,Monthly Notices Roy. Astron. Soc. 140, 121.

    Google Scholar 

  • Stoeckley, T. R. and Mihalas, D.: 1973,NCAR Tech-Note, NCAR-TN/STR-84, pp. 1–183.

  • Stoeckley, T. R. and Morris, C. S.: 1974,Astrophys. J. 188, 579.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept. of Astronomy, Northwestern University, Evanston, Ill, U.S.A.

    William Buscombe

  2. Dept. of Astronomy and Astrophysics, Michigan State University, East Lansing, Mich, U.S.A.

    Thomas R. Stoeckley

Authors
  1. William Buscombe
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Thomas R. Stoeckley
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Buscombe, W., Stoeckley, T.R. Absorption line profiles and rotational velocities for 59 stars. Astrophys Space Sci 37, 197–220 (1975). https://doi.org/10.1007/BF00646073

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00646073

Keywords

Search

Navigation