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Astrophysics

, Volume 62, Issue 4, pp 502–512 | Cite as

Conditions for Formation of the Helium HeI 10830 Å Line in The Disk and Magnetospheric Winds of Young Herbig Ae Stars

  • T. A. ErmolaevaEmail author
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The conditions for formation of helium lines in the disk and magnetospheric winds of Herbig Ae stars are studied. The program package CLOUDY is used to solve this problem. It is shown that the optical thickness of the gas in the HeI 10830 Å line needed to explain the observed P Cyg profiles is reached in the disk or magnetospheric winds of Herbig Ae stars for Te ≥ 10000 K. Here the x-ray emission produced at the surface and in the vicinity of a young star is the main ionization source for helium atoms.

Keywords

young stars Herbig Ae stars disk wind magnetospheric wind 

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References

  1. 1.
    S. Edwards, W. Fischer, L. Hillenbrand, et al., Astrophys. J. 646, 319 (2006).ADSCrossRefGoogle Scholar
  2. 2.
    A. K. Dupree, N. S. Brickhouse, S. R. Cranmer, et al., Astrophys. J. 789, 17 (2014).ADSCrossRefGoogle Scholar
  3. 3.
    P. W. Cauley and C. M. Johns-Krull, Astrophys. J. 797, 21 (2014).CrossRefGoogle Scholar
  4. 4.
    M. Reiter, N. Calvet, et al., Astrophys. J. 852, 12 (2018).ADSCrossRefGoogle Scholar
  5. 5.
    W. Fischer, J. Kwan, S. Edwards, et al., Astrophys. J. 687, 1117 (2008).ADSCrossRefGoogle Scholar
  6. 6.
    J. Kwan and W. Fischer, Mon. Not. Roy. Astron. Soc. 411, 2383 (2011).ADSCrossRefGoogle Scholar
  7. 7.
    R. Kurosawa, M. M. Romanova, and T. J. Harries, Mon. Not. Roy. Astron. Soc. 416, 2623 (2011).ADSCrossRefGoogle Scholar
  8. 8.
    P. C. Schneider, H. M. Günther, J. Robrade, et al., Astron. Astrophys. 618, 16 (2018).CrossRefGoogle Scholar
  9. 9.
    T. Montmerle, Advances in Space Research, 32, 1067 (2003).ADSCrossRefGoogle Scholar
  10. 10.
    S. Hubrig, I. Ilyin, M. Schöller, et al., Astron. Nachr. 334, 1093 (2013).ADSCrossRefGoogle Scholar
  11. 11.
    S. Bagnulo, L. Fossati, J. D. Landstreet, et al., Astron. Astrophys. 583, 37 (2015).CrossRefGoogle Scholar
  12. 12.
    G. J. Ferland, R. L. Porter, P. A. M. Van Hoof, et al., Revista Mexicana de Astronomia y Astrofisica, 49, 137 (2013).ADSGoogle Scholar
  13. 13.
    V. P. Grinin and A. S. Mitskevich, Astrophys. Space Sci. 185, 107 (1991).ADSCrossRefGoogle Scholar
  14. 14.
    A. S. Mitskevich, A. Natta, and V. P. Grinin, APS Conference Ser. 40, 205 (1993).ADSGoogle Scholar
  15. 15.
    L. M. Oskinova, B. Kubatova, and W. R. Hamann, Journal of Quantitative Spectroscopy and Radiative Transfer, 183, 100 (2016).ADSCrossRefGoogle Scholar
  16. 16.
    P. Safier, Astrophys. J. 408, 115 (1993).ADSCrossRefGoogle Scholar
  17. 17.
    P. J. V. Garcia, J. Ferreira, S. Cabrit, et al., Astron. Astrophys. 377, 589 (2001).ADSCrossRefGoogle Scholar
  18. 18.
    F. Shu, J. Najita, E. Ostriker, et al., Astrophys. J. 429, 781 (1994).ADSCrossRefGoogle Scholar
  19. 19.
    S. R. Cranmer, Astrophys. J. 689, 316 (2008).ADSCrossRefGoogle Scholar
  20. 20.
    M. M. Romanova, G. V. Ustyugova, A. V. Koldoba, et al., Mon. Not. Roy. Astron. Soc. 399, 1802 (2009).ADSCrossRefGoogle Scholar
  21. 21.
    E. D. Feigelson and G. P. Garmire, Astrophys. J. 572, 335 (2002).ADSCrossRefGoogle Scholar
  22. 22.
    A. Telleschi, M. Güdel, K. R. Briggs, et al., Astron. Astrophys. 468, 443 (2007).ADSCrossRefGoogle Scholar
  23. 23.
    H. Zinnecker and Th. Preibisch, Astron. Astrophys. 292, 152 (1994).ADSGoogle Scholar
  24. 24.
    K. Hamaguchi, S. Yamauchi, and K. Koyama, Astrophys. J. 618, 360 (2005).ADSCrossRefGoogle Scholar
  25. 25.
    D. A. Swartz, J. J. Drake, R. F. Elsner, et al., Astrophys. J. 628, 811 (2005).ADSCrossRefGoogle Scholar
  26. 26.
    B. Stelzer, G. Micela, K. Hamaguchi, et al., Astron. Astrophys. 457, 223 (2006).ADSCrossRefGoogle Scholar
  27. 27.
    V. P. Grinin and L. V. Tambovtseva, Astron. zh. 88, 766 (2003).ADSGoogle Scholar
  28. 28.
    N. A. Katysheva, T. A. Ermolaeva, and V. P. Grinin, Astrophysics, 61, 286 (2018).ADSCrossRefGoogle Scholar
  29. 29.
    J. R. Fairlamb, R. D. Oudmaijer, I. Mendigutia, et al., Mon. Not. Roy. Astron. Soc. 453, 976 (2015).ADSCrossRefGoogle Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Main (Pulkovo) Astronomical ObservatorySaint Petersburg State UniversitySt. PetersburgRussia

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