Kinematics and Physics of Celestial Bodies

, Volume 24, Issue 2, pp 89–98 | Cite as

Identification of absorption lines of short half-life actinides in the spectrum of Przybylski’s star (HD 101065)

  • V. F. Gopka
  • A. V. Yushchenko
  • V. A. Yushchenko
  • I. V. Panov
  • Ch. Kim
Physics of Stars and Interstellar Medium


Absorption lines of some actinides, namely, actinium (Z = 89), protactinium (91), neptunium (93), plutonium (94), americium (95), curium (96), berkelium (97), californium (98), and einsteinium (99), were identified in the spectrum of one of the most peculiar main-sequence stars HD 101065 (Przybylski’s star). In the identification we used a high-resolution spectrum (R = 80 000) acquired at the 8.2-m ESO telescope.

PACS numbers

97.30.Fi 95.30.Ky 


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  1. 1.
    Gopka, V.F., Yushchenko, A.V., Mishenina, T.V., et al., Abundance Analysis of the Halo Star HD 221170 Atmosphere by the Synthetic Spectrum Technique, Astron. Zhurn., 2004, vol. 81, no. 7, pp. 635–647.Google Scholar
  2. 2.
    Radtsig, A.A. and Smirnov, B.M., Parametry atomov i ionov (Parameters of Atoms and Ions), Moscow: Atomizdat, 1986.Google Scholar
  3. 3.
    Shavrina, A.V., Polosuknina, N.S., Pavlenko, Ya.V., et al., Peculiarities in the Spectrum of the Unique roAp Star HD 101065 in the Region of the Lithium Resonance Doublet Line 6708 A, Astron. Zhurn., 2003, vol. 80, no. 7, pp. 624–630.Google Scholar
  4. 4.
    Yushchenko, A.V. and Gopka, V.F., On the Abundance of Heavy Elements in the Procyon Atmosphere, Pis’ma v Astron. Zhurn., 1996, vol. 22, no. 5–6, pp. 460–470.ADSGoogle Scholar
  5. 5.
    Aller, M. and Cowley, C.R., The Possible Identification of Promethium in HR 465, Astrophys. J., 1970, vol. 162, no. 3, pp. 145–148.CrossRefADSGoogle Scholar
  6. 6.
    Arndt, Th., Back, H., Steinhof, A., et al., Radiative Lifetimes of Am I Atomic Levels, Phys. Rev., 1988, vol. 38, no. 10, pp. 5084–5091.CrossRefADSGoogle Scholar
  7. 7.
    Bidelman, W.P., Tc and Other Unstable Elements in Przybylski’s Star, ASP Conf. Ser., 2005, vol. 336, pp. 309–311.ADSGoogle Scholar
  8. 8.
    Cowley, C.R., Bidelman, W.P., Hurbig, S., et al., On the Possible Presence of Promethium in the Spectra of HD 101065 (Przybylski’s Star) and HD 965, Astron. and Astrophys., 2004, vol. 419, no. 3, pp. 1087–1093.CrossRefADSGoogle Scholar
  9. 9.
    Cowley, C.R. and Mathys, G., Line Identification and Preliminary Abundances from the Red Spectrum of HD 101065 (Przybylski’s Star), Astron.and Astrophys., 1998, vol. 339, no. 1, pp. 165–169.ADSGoogle Scholar
  10. 10.
    Cowley, C.R., Ryabchikova, T., Kupka, F., et al., Abundances in Przybylski’s Star, Mon. Notic. Roy. Astron. Soc., 2000, vol. 317, no. 1, pp. 299–309.CrossRefADSGoogle Scholar
  11. 11.
    Gopka, V., Yushchenko, A., Goriely, S., et al., Radioactive Elements in Stellar Atmospheres, Intern. Symp. on Origin of Matter and Evolution of Galxies 2005: New Horizon of Nuclear Astrophysics and Cosmology; Tokio, Japan, 8–11 November, AIP Conf. Proc., 2006, vol. 847, pp. 389–391.ADSGoogle Scholar
  12. 12.
    Gopka, V., Yushchenko, A., Musaev, F., et al., Stellar Abundance Patterns. What Is the Possible Level of Completeness Today?, IAU Symp. No. 210 “Modelling of Stellar Atmospheres”, Piskunov, N., Weiss, W.W., and Gray, D.F., Eds., Uppsala, 2003, p. A5.Google Scholar
  13. 13.
    Gopka, V., Yushchenko, A., Shavrina, A., et al., On the Radioactive Shells in Peculiar Main Sequence Stars: the Phenomenon of Przybylski’s Star, IAU Symp. No. 224 “The A-Star Puzzle”, Poprad, Slovakia, 2004, pp. 119–127.Google Scholar
  14. 14.
    Gopka, V., Yushchenko, V., Shavrina, A., et al., Detailed Chemical Abundances of Several CP-Stars of the Upper Main Sequences, Kinematics and Physics of Celestial Bodies. Suppl., 2005, no. 5, pp. 283–290.Google Scholar
  15. 15.
    Jaschek, M. and Brandi, E., Transuranium Elements in HD 25354, Astron. and Astrophys., 1972, vol. 20, no. 2, pp. 233–235.ADSGoogle Scholar
  16. 16.
    Przybylski, A., A G0 Star with High Metal Content, Nature, 1961, vol. 189, no. 4766, p. 739.CrossRefADSGoogle Scholar
  17. 17.
    Przybylski, A., Line of Holmium in the Spectrum of HD 101065, Acta Astron., 1963, vol. 13, no. 4, pp. 217–228.ADSGoogle Scholar
  18. 18.
    Przybylski, A., Can the Peculiarities of HD 101065 be Explained by Fission of Transurnium Elements, Proc. Astron. Soc. Austral., 1975, vol. 2, pp. 352–353.ADSGoogle Scholar
  19. 19.
    Przybylski, A., Is Iron Present in the Atmosphere of HD 101065?, Mon. Notic. Roy. Astron. Soc., 1977, vol. 178, no. 1, pp. 71–84.ADSGoogle Scholar
  20. 20.
    Przybylski, A. and Kennedy, M., The Spectrum of HD 101065, Publ. Astron. Soc. Pacif., 1963, vol. 75, no. 445, pp. 349–354.CrossRefADSGoogle Scholar
  21. 21.
    Ryabchikova, T., Ryabtsev, A., Kochukhov, O., and Bagnulo, S., Rare-Earth Elements in the Atmosphere of the Magnetic Chemically Peculiar Star HD 144897, Astron. and Astrophys., 2006, vol. 456, no. 1, pp. 329–338.CrossRefADSGoogle Scholar
  22. 22.
    Sansonetti, J.E., Martin, W.C., and Young, S.L., Handbook of Basic Atomic Spectroscopic Data (Ver. 1.1), 2004,
  23. 23.
    Shavrina, A.V., Khalack, V., Polosukhina, N.S., et al., Lithium Blend Fitting for roAp Star HD 101065 (Przybylski’s Star), Odessa Astron. Publ., 2001, vol. 14, no. 1, pp. 249–252.Google Scholar
  24. 24.
    Shavrina, A.V., Polosukhina, N.S., Pavlenko, Y.V., et al., The Spectrum of the Li 6708 Å Spectral Region, Astron. and Astrophys., 2003, vol. 400, no. 2, pp. 707–713.CrossRefADSGoogle Scholar
  25. 25.
    Wegner, G. and Petford, A.D., Abundance Analysis of Przybylski’s Star (HD 101065), Mon. Notic. Roy. Astron. Soc., 1974, vol. 168, no. 3, pp. 557–575.ADSGoogle Scholar
  26. 26.
    Yushchenko, A., About the Possibility of Explanation of the Spectrum of Przybylski’s Star by the Lines of Radioactive Elements, Proc. of Science International Symp. on Nuclear Astrophysics-Nuclei in Cosmos-IX, CERN, Switzerland, June 25–30, 2006.Google Scholar
  27. 27.
    Yushchenko, A., Gopka, V., Goriely, S., et al., Interplay between Diffusion, Accretion and Nuclear Reaction in the Atmospheres of Sirius and Przybyski’s Star, ASP Conf. Ser., 2007, no. 362, pp. 46–54.Google Scholar
  28. 28.
    Yushchenko, A., Gopka, V., Kim, Ch., et al., Chemical Abundances Patterns for Sharp-Lined Stars, J. Korean Astron. Soc., 2002, no. 35, pp. 209–220.Google Scholar

Copyright information

© Allerton Press, Inc. 2008

Authors and Affiliations

  • V. F. Gopka
    • 1
  • A. V. Yushchenko
    • 2
  • V. A. Yushchenko
    • 1
  • I. V. Panov
    • 3
  • Ch. Kim
    • 4
  1. 1.Astronomical ObservatoryMechnikov Odessa National UniversityOdessaUkraine
  2. 2.Sejong UniversitySeoulRepublic of Korea
  3. 3.Institute of Theoretical and Experimental PhysicsMoscowRussian Federation
  4. 4.Chungbuk National UniversityCheongjuRepublic of Korea

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