Skip to main content
SpringerLink
Log in

Magnetic field models for HD 116458 and HD 126515

  • Published:
Astronomy Reports Aims and scope Submit manuscript

Abstract

We have modeled the magnetic fields of the slowly rotating stars HD 116458 and HD 126515 using the “magnetic charge” technique. HD 116458 has a small angle between its rotation axis and dipole axis (β = 12°), whereas this angle is large for HD 126515 (β = 86°). Both stars can be described with a decentered-dipole model, with the respective displacements being r = 0.07 and r = 0.24 in units of the stellar radius. The decentered-dipole model is able to satisfactorily explain the phase relations for the effective field, B e(P), and the mean surface field, B s(P), for both stars, along with the fact that the B e(P) phase relation for HD 126515 is anharmonic. We discuss the role of systematic measurement errors possibly resulting from instrumental or methodical effects in one or both of the phase relations. The displacement of the dipole probably reflects real asymmetry of the stellar field structure, and is not due to measurement errors. Using both phase relations, B e(P) and B s(P), in the modeling considerably reduces the influence of the nonuniform distribution of chemical elements on the stellar surface.

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

  1. Yu. V. Glagolevskii, Astrofizika 47, 575 (2004) [Astrophys. 47, 487 (2004)].

    Google Scholar 

  2. Yu. V. Glagolevskij and E. Gerth, Bull. Spec. Astrophys. Obs. 58, 31 (2004).

    Google Scholar 

  3. E. Gerth, Yu. V. Glagolevskij, and G. Scholz, in Stellar Magnetic Fields, Ed. by Yu. V. Glagolevskij and I. I. Romanyuk (Moscow, 1997), p. 67.

  4. E. Gerth and Yu. V. Glagolevskij, Magnetic Fields of Chemically Peculiar and Related Stars, Ed. by Yu. V. Glagolevskij and I. I. Romanyuk (Moscow, 2000), p. 151.

  5. E. Gerth and Yu. V. Glagolevskij, Bull. Spec. Astrophys. Obs. 55 (2004) (in press).

  6. V. P. Khalak, Yu. N. Khalak, A. V. Shavrina, and N. S. Polosukhina, Astron. Zh. 78, 655 (2001) [Astron. Rep. 45, 564 (2001)].

    Google Scholar 

  7. R. Stepień, Astron. Astrophys. 353, 227 (2000).

    ADS  Google Scholar 

  8. H. W. Babcock, in Stellar Atmospheres, Ed. by J. Greenstein (University of Chicago, Chicago, 1960), p. 282.

    Google Scholar 

  9. G. Mathys and S. Hubrig, Astron. Astrophys., Suppl. Ser. 124, 475 (1997).

    Article  ADS  Google Scholar 

  10. G. Mathys, Astron. Astrophys., Suppl. Ser. 89, 121 (1991).

    ADS  Google Scholar 

  11. G. Mathys, S. Hubrig, J. D. Landstreet, T. Lanc, and J. Manfroid, Astron. Astrophys., Suppl. Ser. 123, 353 (1997).

    Article  ADS  Google Scholar 

  12. J. D. Landstreet and G. Mathys, Astron. Astrophys. 359, 213 (2000).

    ADS  Google Scholar 

  13. H. M. Maitzen and H. J. Wood, Astron. Astrophys. 58, 389 (1977).

    ADS  Google Scholar 

  14. Yu. V. Glagolevskij and E. Gerth, in Magnetic Fields of Chemically Peculiar and Related Stars, Ed. by Yu. V. Glagolevskij and I. I. Romanyuk (Moscow, 2000), p. 161.

  15. G. Prestom, Astrophys. J. 160, 1059 (1970).

    ADS  Google Scholar 

  16. G. A. Wade, J.-F. Donati, J. D. Landstreet, and S. L. S. Shorlin, Mon. Not. R. Astron. Soc. 313, 851 (2000).

    ADS  Google Scholar 

  17. G. Mathys, Astron. Astrophys., Suppl. Ser. 108, 547 (1994).

    ADS  Google Scholar 

  18. F. Leone and G. Catanzaro, Astron. Astrophys. 356, 118 (2001).

    ADS  Google Scholar 

  19. van den Heuvel, Astron. Astrophys. 11, 4612 (1971).

    Google Scholar 

  20. G. Mathys and N. Lanc, Astron. Astrophys. 256, 169 (1992).

    ADS  Google Scholar 

  21. J. D. Landstreet, Astrophys. J. 159, 1001 (1970).

    Article  ADS  Google Scholar 

  22. G. Mathys and T. Lanc, Astron. Astrophys. 256, 169 (1992).

    ADS  Google Scholar 

  23. Yu. V. Glagolevskij and E. Gerth, Bull. Spec. Astrophys. Obs. 51, 84 (2001).

    ADS  Google Scholar 

  24. Yu. V. Glagolevskij and E. Gerth, Magnetic Stars, Ed. by Yu. V. Glagolevskij, D. O. Kudryavtsev, and I. I. Romanyuk (Moscow, 2004), p. 142.

  25. E. Gerth and Yu. V. Glagolevskij, in IAU Symp. No. 224, Ed. by J. Zverko, W. W. Weiss, J. Ziznovsky, and S. J. Adelman (Cambridge Univ. Press, 2004), p. EP6.

  26. O. Kochukhov, S. Bagnulo, G. A. Wade, et al., Astron. Astrophys. 414, 613 (2004).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachai-Cherkessian Republic, 357147, Russia

    Yu. V. Glagolevskii

Authors
  1. Yu. V. Glagolevskii
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 82, No. 12, 2005, pp. 1119–1126.

Original Russian Text Copyright © 2005 by Glagolevski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\).

Rights and permissions

Reprints and permissions

About this article

Cite this article

Glagolevskii, Y.V. Magnetic field models for HD 116458 and HD 126515. Astron. Rep. 49, 1001–1008 (2005). https://doi.org/10.1134/1.2139816

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1134/1.2139816

Keywords

Search

Navigation