Skip to main content
SpringerLink
Log in

Analysis of Actinium Abundances in the Atmosphere of Cepheid HIP13962

  • PHYSICS OF STARS AND INTERSTELLAR MEDIUM
  • Published:
Kinematics and Physics of Celestial Bodies Aims and scope Submit manuscript

Abstract

Actinium is a radioactive element that has an isotope 227Ac with the longest half-life of 21.772(3) years. It is the third element in the actinoid group, in addition to thorium and uranium, the abundance of which can be studied in the atmospheres of stars. Its presence in the atmosphere of a particular star primarily indicates some mechanism of its production. The first studies of the actinium absorption lines in the spectra of certain stars showed that the appearance of actinium in their spectrum is associated with the presence of deformation of strong lines, such as hydrogen lines and sodium doublet lines. In some cases, profiles of strong lines contain emission components. In the search for actinium absorption lines in the stellar spectra, attention was focused on such class of stars as Cepheids, which are characterized by deformation of strong lines due to pulsations. The absorption lines of actinium were studied in the spectral interval of 378.0–887.7 nm for the runaway star and Cepheid HIP13962 using the spectra obtained in 2014 with a 1.8-m telescope at Bohyunsan Optical Astronomical Observatory (BOAO, South Korea) with a spectral resolution greater than R = 80 000. The archived HIP13962 spectrum for 1995 in the wavelength range of 400.0–680.0 nm with a spectral resolution R = 42 000, which was obtained with the 1.93-m telescope of the Haute Provence Observatory (France), was also used. The modeling showed that the actinium abundance in the atmosphere of HIP13962 log N(Ac) = –1.2 on the hydrogen scale log N(H) = 12.0, with the model atmosphere Teff = 5930 K, log g = 1.0, Vmicro = 6 km s–1. This value turns out to be 0.2 more at an increase in the effective temperature Teff = 6250 K: logN(Ac) = –1.0 on the hydrogen scale logN(H) = 12.0.

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

Fig. 1.
Fig. 2.
Fig. 3.

Similar content being viewed by others

REFERENCES

  1. V. F. Gopka and O. M. Ulyanov, “About the hypothesis explaining the phenomenon of Przybylski’s star,” Bull. Crimean Astrophys. Observatory 104, 225–226 (2008).

    Google Scholar 

  2. A. V. Yushchenko, Heavy Elements in the Atmospheres of Peculiar Stars, Doctoral Dissertation in Astrophysics and Radioastronomy (Odessa, 2017).

  3. M. Asplund, N. Grevesse, A. Sauval, and P. Scott, “The chemical composition of the Sun,” Annu. Rev. Astron. Astrophys. 47, 481–522 (2003).

    Article  ADS  Google Scholar 

  4. F. Castelli and R. L. Kurucz, “New grids of ATLAS9 model atmospheres,” in Modelling of Stellar Atmospheres: Proc. 210th Symp. of the International Astronomical Union, Uppsala, Sweden, June 17–21, 2002, Ed. by N. Piskunov, W. W. Weiss, and D. F. Gray (Astronomical Society of the Pacific, San Francisco, Calif., 2003), poster A20.

  5. S. C. Engle, The Secret Lives of Cepheids. A Multi-Wavelength Study of the Atmospheres and Real-Time Evolution of Classical Cepheids, Doctoral Dissertation in Physics (James Cook Univ., Australia, 2014).

  6. S. Engle, E. Guinan, W. Heintz, J. Carton, and A. Hernandez, “The secret lives of Cepheids II: More surprises as we extend the period/luminosity range of our sample,” Bull. Am. Astron. Soc. 37, 1169 (2005).

    Google Scholar 

  7. V. F. Gopka, A. V. Yushchenko, A. V. Shavrina, and A. V. Perekhod, “Thorium and uranium in the atmosphere of Arcturus,” Kinematics Phys. Celestial Bodies 15, 332–337 (1999).

    ADS  Google Scholar 

  8. V. Gopka, O. Ulyanov, and S. Andrievsky, “Neutron stars as a source of the short-lived nuclides in Ap-stars,” in Proc. 10th Int. Symp. on Origin of Matter and Evolution of Galaxies: From the Dawn of Universe to the Formation of Solar System (OMEG-07), Sapporo, Japan, Dec. 4–7, 2007 (American Inst. of Physics, Melville, N.Y., 2008), in Ser.: AIP Conference Proceedings, Vol. 1016, pp. 460–462.

  9. V. F. Gopka, A. V. Shavrina, V. A. Yushchenko, A. V. Yushchenko, Ya. V. Pavlenko, et al., “Actinium abundance in the atmospheres of three red supergiants in the Magellanic Clouds,” Kinematics Phys. Celestial Bodies 34, 123–133 (2018).

    Article  ADS  Google Scholar 

  10. V. F. Gopka, O. M. Ulyanov, A. V. Yushchenko, A. V. Shavrina, and S. M. Andrievsky, “The nature of magnetic chemically peculiary stars through the prism of inexplicable facts,” in Proc. Int. Symp. on Origin of Matter and Evolution of Galaxies (OMEG-10): Osaka, Japan, Mar. 8–10, 2010 (American Inst. of Physics, Melville, N.Y., 2010), in Ser.: AIP Conference Proceedings, Vol. 1269, pp. 454–455.

  11. V. F. Gopka, A. V. Yushchenko, V. A. Yushchenko, A. V. Shavrina, S. M. Andrievsky, Y. Jeong, and E. P. Shereta, “The abundances of heavy elements in BL138 — Red giant of local group Fornax dwarf spheroidal galaxy,” Phys. Sci. Technol. 5 (1–2), 70–78 (2018).

    Article  Google Scholar 

  12. S. Goriely, “Nucleosynthesis by accelerated particles to account for the surface composition of HD101065 (Przybylski’s star),” Astron. Astrophys. 466, 619–631 (2007).

    Article  ADS  Google Scholar 

  13. E. Guinan, S. Engle, N. Evans, G. Harper, G. M. Harp, The Secret IR lives of Cepheids: Spitzer IR Spectroscop of Circumstellar Envelopes, Winds and Chromospheric Emissions in Nearby Cepheids, Spitzer Proposal id. 40968 (2007).

  14. I. I. Ivans, J. Simmerer, C. Sneden, J. J. Cowan, R. Gallino, and S. Bisterzo, “Lawler near-ultraviolet observations of HD221170: New insights into the nature of r-process-rich stars,” Astrophys. J. 645, 613–633 (2006).

    Article  ADS  Google Scholar 

  15. R. P. Kraft, “Cα II emission in classical Cepheid variables,” Astrophys. J. 125, 336–349 (1957).

    Article  ADS  Google Scholar 

  16. Ya. V. Pavlenko, “A "lithium test” and modeling of lithium lines in late-type M dwarfs: Teide1,” Astron. Rep. 41, 537–542 (1997).

    ADS  Google Scholar 

  17. Ya. V. Pavlenko, “Model atmospheres of red giants,” Astron. Rep. 47, 59–67 (2003).

    Article  ADS  Google Scholar 

  18. B. Proxauf, R. da Silva, V. V. Kovtyukh, et al., “A new and homogeneous metallicity scale for Galactic metallicity scale for Galactic classical Cepheids — I. Physical parameters,” Astron. Astrophys. 616, 82 (2018).

    Article  Google Scholar 

  19. P. Quinet, C. Argante, V. Fivet, C. Terranova, A. V. Yushchenko, and I. Biémont, “Atomic data for radioactive elements Ra I, Ra II, Ac I and Ac II and application to their detection in HD 101065 and HR 465,” Astron. Astrophys. 474, 307–314 (2007).

    Article  ADS  Google Scholar 

  20. J. Roßnagel, S. Raeder, A. Hakimi, R. Ferrer, N. Trautmann, and K. Wendt, “Determination of the first ionization potential of actinium,” Phys. Rev. Astron. Astrophys. 85, 125–150 (2012).

    Google Scholar 

  21. T. A. Ryabchikova, Yu. V. Pakhomov, and N. E. Piskunov, “New release of Vienna atomic line database (VALD3) and its integration in virtual atomic and molecular data centre (VAMDC),” Uch. Zap. Kazan. Univ. 153 (2), 61–66 (2011).

    Google Scholar 

  22. N. Tetzlaff, B. Dincel, R. Neuhauser, and V. V. Kovtyukh, “The origin of the young PSRJ0826 +2637 and possible former companion HIP 13962,” Mon. Not. R. Astron. Soc. 438, 3587–3593 (2014).

    Article  ADS  Google Scholar 

  23. A. Unsold, Physik der Sternatmospharen, MIT Besonderer Berucksichtigung der Sonne (Springer-Verlag, Berlin, 1955). https://ui.adsabs.harvard.edu/abs/1955psmb.book…..U.

    MATH  Google Scholar 

  24. G. Urer and L. Ozdemir, “The level structure of singly-ionized actinium,” J. Kor. Phys. Soc. 61. 353–358 (2012).

    Article  ADS  Google Scholar 

  25. S. Wanajo, N. Itoh, Y. Ishimaru, Y. Nozawa, and T. Beers, “The r-process in the neutrino wind of core-collapse supernova and U-Th cosmochronology,” Astrophys. J. 577, 853–865 (2002).

    Article  ADS  Google Scholar 

  26. A. V. Yushchenko, “URAN: a software system for the analysis of stellar spectra,” in Proc. 20th Stellar Conf. of the Czech and Slovak Astronomical Institutes, Brno, Czech Republic, Nov. 5–7, 1997, Ed. by J. Dušek (Nicolaus Copernicus Observatory and Planetarium Brno, Brno, 1998).

  27. V. Yushchenko, A. Yushchenko, V. Gopka, A. Shavrina, V. Kovtyukh, K. S. Hong, and D. I. Mkrtichian, “HIP 13962 — The possible former member of binary system with supernova,” Presented at Stars on the Run — A Meeting On The Run Away and Hyper-Velocity Stars, Bamberg, Germany, Aug. 16–19, 2016. http://www.blackhole.eu/media/hvs2016/PDFs/Yushchenko.pdf.

  28. V. Yushchenko, A. Yushchenko, V. Gopka, A. Shavrina, V. Kovtyukh, K. S. Hong, D. Mkrtichian, and N. A-Thano, “HIP 13962 — The possible former member of binary system with supernova,” Odessa Astron. Publ. 29, 229–232 (2016). https://doi.org/10.18524/1810-4215.2016.29.85238

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Scientific Research Institute Astronomical Observatory, Mechnikov Odessa National University, 65014, Odessa, Ukraine

    V. F. Gopka

  2. Main Astronomical Observatory, National Academy of Sciences of Ukraine, 03680, Kyiv, Ukraine

    A. V. Shavrina, V. A. Yushchenko & Ya. V. Pavlenko

  3. Odessa Maritime University, 65029, Odessa, Ukraine

    V. A. Yushchenko

  4. Astrocamp Contents Research Institute, 10-329, Goyang, Republic of Korea

    A. V. Yushchenko

  5. Odessa National Academy of Telecommunications, 65029, Odessa, Ukraine

    L. V. Glazunova

Authors
  1. V. F. Gopka
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. V. Shavrina
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. V. A. Yushchenko
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Ya. V. Pavlenko
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. A. V. Yushchenko
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. L. V. Glazunova
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to V. F. Gopka, A. V. Shavrina, Ya. V. Pavlenko, A. V. Yushchenko or L. V. Glazunova.

Ethics declarations

The authors declare that they have no conflicts of interest.

Additional information

Translated by M. Chubarova

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gopka, V.F., Shavrina, A.V., Yushchenko, V.A. et al. Analysis of Actinium Abundances in the Atmosphere of Cepheid HIP13962. Kinemat. Phys. Celest. Bodies 38, 100–107 (2022). https://doi.org/10.3103/S0884591322020040

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S0884591322020040

Keywords:

Search

Navigation