Magnetic field monitoring of the very slowly rotating CP star HD 965

Astrophysical Bulletin - Tập 70 - Trang 456-459 - 2015
I. I. Romanyuk1, D. O. Kudryavtsev1, E. A. Semenko1, I. A. Yakunin1
1Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Russia

Tóm tắt

With the 6-m telescope we performed the magnetic field B e measurements for the chemically peculiar star HD 965. During 2000–2015 we obtained over 30 spectra with a Zeeman circular polarization analyzer. The longitudinal field reaches +600 G at the positive extremum and goes below −1300 G at the negative one. The magnetic monitoring of the star shows that the period of B e variability, i.e., the rotation period, exceeds 15 years. Thus, HD 965 belongs to the five slowest rotators among magnetic stars.

Tài liệu tham khảo

G. Mathys, S.Hubrig, J. D. Landstreet, et al., Astron. and Astrophys. Suppl. 123, 353 (1997).

C. Bertaud, J. Obs. 48, 211 (1965).

D. W. Kurtz, Annual Rev. Astron. Astrophys. 28, 607 (1990).

D. W. Kurtz, N. Dolez, and M. Chevreton, Astron. and Astrophys. 398, 117 (2003).

V. G. Elkin, D. W. Kurtz, G. Mathys, et al., Monthly Notices Royal Astron. Soc. 358, 1100 (2005).

I. I. Romanyuk, E. A. Semenko, and D. O. Kudryavtsev, Astrophysical Bulletin 69, 427 (2014).

I. D. Najdenov and G. A. Chuntonov, Soobshch. SAO, No. 16, 63 (1976).

G. A. Chuntonov, in Magnetic Stars, Ed. by Yu. V. Glagolevskij, D. O. Kudryavtsev, and I. I. Romanyuk (Special Astrophysical Observatory, Nizhny Arkhyz, 2004), p. 286.

D. O. Kudryavtsev, I. I. Romanyuk, V. G. Elkin, and E. Paunzen, Monthly Notices Royal Astron. Soc. 372, 1804 (2006).

S. Bagnulo, T. Szeifert, G.A. Wade, et al., Astron. and Astrophys. 389, 191 (2002).

I. A. Yakunin, Astrophysical Bulletin 68, 214 (2013).

G. Mathys, ASP Conf. Ser. 494, 3 (2015).

G. Mathys, Contr. Astron. Obs. SkalnatéPleso 38, 217 (2008).

K. T. Wraight, L. Fossati, M. Netopil, et al., Monthly Notices Royal Astron. Soc. 420, 757 (2012).

R. Glebocki and P. Gnacinski, ESA SP 560, 571 (2005).

Yu. Yu. Balega, V. V. Dyachenko, A. F. Maksimov, et al., Astrophysical Bulletin 67, 44 (2012).