Physics of Stars and Interstellar Medium

Kinematics and Physics of Celestial Bodies

, Volume 24, Issue 2, pp 89-98

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

  • V. F. GopkaAffiliated withAstronomical Observatory, Mechnikov Odessa National University
  • , A. V. YushchenkoAffiliated withSejong University
  • , V. A. YushchenkoAffiliated withAstronomical Observatory, Mechnikov Odessa National University
  • , I. V. PanovAffiliated withInstitute of Theoretical and Experimental Physics
  • , Ch. KimAffiliated withChungbuk National University

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Abstract

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