Mode Identification for Subdwarf B Stars Using Period Spacings in Kepler Data

  • M. D. Reed
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 31)


During the Kepler spacecraft’s first year of operation, its short cadence observations were obtained in a survey mode where targets received one month of nearly continuous observations. Forty eight subdwarf B stars were observed of which 14 were found to be pulsators, 13 having predominantly long (g mode) periods. We applied asymptotic relations to the g-mode pulsations and discovered evenly spaced in period sequences for = 1 and 2 modes in all of the stars. We were able to associate 222 of 317 measured periods with = 1 and 2 modes which should provide tight constraints on pulsation models. We use the period spacings to compare with theoretical masses of these stars.


Mode Identification Asymptotic Relation Horizontal Branch Pulsation Model Period Spacing 
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.


  1. 1.
    Charpinet, S., et al.: ApJS 139, 487 (2002)ADSCrossRefGoogle Scholar
  2. 2.
    Charpinet, S., et al.: A&A 530, 3 (2011)ADSCrossRefGoogle Scholar
  3. 3.
    Green, E.M., et al.: ApJL 583, 31 (2003)CrossRefGoogle Scholar
  4. 4.
    Han, Z., Podsiadlowski, P., Maxted, P.F.L., et al.: MNRAS 336, 449 (2002)ADSCrossRefGoogle Scholar
  5. 5.
    Han, Z., Podsiadlowski, Ph., Maxted, P.F.L., et al.: MNRAS 341, 669 (2003)ADSCrossRefGoogle Scholar
  6. 6.
    Hu, H., Nelemans, G., Aerts C., et al.: A&A 508, 869 (2009)ADSCrossRefGoogle Scholar
  7. 7.
    Hu, H., Glebbeek, K, Thou, A.A., et al.: A&A 511, 87 (2010)Google Scholar
  8. 8.
    Kilkenny, D., Koen, C., O’Donoghue, D., et al.: MNRAS 285, 640 (1997)ADSGoogle Scholar
  9. 9.
    Ledoux, P.: ApJ 114, 373 (1951)ADSCrossRefGoogle Scholar
  10. 10.
    Miller Bertolami, M.M., Córsico, A.H., Althaus, L.G.: ASP Conf. Ser. 452, 175 (2012)ADSGoogle Scholar
  11. 11.
    J. Montalban, A. Miglio, A. Noels, R. Scuflaire, et al.: Proc. of the workshop ”Red Giants as Probes of the Structure and Evolution of the Milky Way. In: Miglio, A., Montalban, J., Noels, A. (eds.) Astrophysics and Space Science Proceedings, ISBN 978-3-642-18417-8 (2010)Google Scholar
  12. 12.
    Østensen, R.H.: Astron. Nachr. 331, 1029 (2010a)CrossRefGoogle Scholar
  13. 13.
    Reed, M.D., et al.: ApJ 607, 445 (2010)ADSCrossRefGoogle Scholar
  14. 14.
    Reed, M.D., et al.: MNRAS 414, 2885 (2011)ADSCrossRefGoogle Scholar
  15. 15.
    Reed, M.D., et al.: ASP Conf. Ser. 452, 193 (2012)ADSGoogle Scholar
  16. 16.
    Van Grootel, V., et al.: ApJL 718, 97 (2010)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Missouri State UniversitySpringfieldUSA

Personalised recommendations