arXiv Open Access 2023

Abundance of radioactive technetium in Przybylski's star revisited

S. M. Andrievsky S. A. Korotin K. Werner
Lihat Sumber

Abstrak

We have searched for lines of the radioactive element technetium (Tc) in the spectrum of Przybylski's star (HD101065). The nuclei of this chemical element are formed in the slow process of capturing thermalized neutrons. The possible lines of Tc~I are heavily blended. We have synthesized the profile of one resonance line at 4297.06 Å~, which is also a part of the complex blend, and we arrived at a decision that it is not visible in the spectrum (as was first noted by Ryabchikova), casting doubt on the existence of technetium in the atmosphere of the Przybylski's star. Therefore, based on our calculated combined profile, which has been adjusted to the observed blend profile at ~4297.2 A (that may possibly contain the resonance technetium line 4297.06 A), we reduce the maximum technetium abundance to $\logε$(Tc/H) = 2.5. This value can be considered only as an upper limit of the technetium abundance in the Przybylski's star.

Topik & Kata Kunci

Penulis (3)

S

S. M. Andrievsky

S

S. A. Korotin

K

K. Werner

Format Sitasi

Andrievsky, S.M., Korotin, S.A., Werner, K. (2023). Abundance of radioactive technetium in Przybylski's star revisited. https://arxiv.org/abs/2308.04479

Akses Cepat

Lihat di Sumber
Informasi Jurnal
Tahun Terbit
2023
Bahasa
en
Sumber Database
arXiv
Akses
Open Access ✓