Neutron Stars as a Source of the Short-Lived Nuclides in Ap-star Atmospheres

Journal Article · Wed May 21 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943626· OSTI ID:21143509

Gopka, Vera F; Andrievsky, Sergey M ^[1]; Ulyanov, Oleg M ^[2]

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1. Department of Astronomy, Odessa National University, T.G. Shevchenko Park, Odessa 65014 (Ukraine)
2. Institute of Radio Astronomy of National Academy of Sciences of Ukraine, 4 Chervonopraporna str., Kharkov 61002 (Ukraine)

We propose a new explanation of some magnetic chemically peculiar (MCP) star anomalies, which is based on an assumption that such stars be the close binary systems with a secondary component being a neutron star. Within this hypothesis one can naturally explain the main anomalous features of MCP stars: first of all, an existence of the short-lived radioactive isotopes detected in some stars (like Przybylski's star (PS) and HR465), and some others peculiarities. Also we can assume the presence of the electron-positron annihilation emission lines (0.511 MeV) in the gamma spectrum of some MCP stars.

• OSTI ID: 21143509
• Journal Information: AIP Conference Proceedings, Vol. 1016, Issue 1; Conference: 10. international symposium on origin of matter and evolution of galaxies: From the dawn of Universe to the formation of solar system, Sapporo (Japan), 4-7 Dec 2007; Other Information: DOI: 10.1063/1.2943626; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINARY STARS
ELECTRON-POSITRON INTERACTIONS
GAMMA SPECTRA
HALF-LIFE
MEV RANGE
NEUTRON STARS
NUCLEAR DECAY
PULSARS
RADIOISOTOPES