We report on the discovery of the Zeeman resolved spectral lines, corresponding to the very large magnetic field modulus [H] = 11.1 kG, in the spectrum of the chemically peculiar star HD 158450 belonging to the recently discovered Mamajek 2 stellar group. We determined fundamental parameters and projected rotation velocity of the star. Dynamical 3D mean orbit calculations showed that Mamajek 2 stellar group has an age of 135+-5 Myr. Based on this age, we estimate that HD 158450 has completed about 12% of its main-sequence life. The importance of the detailed study of HD 158450, a member of a stellar group with a well determined age, for understanding the origin and evolution of stellar magnetic fields is discussed.
|Title of host publication||Odessa Astronomical Publications|
|Publication status||Published - 2008|
Drake, N. A., Jilinski, E. G., Ortega, V. G., de, L. R. R., & Bazzanella, B. (2008). HD 158450: A Magnetic Chemically Peculiar Star in a Young Stellar Group. In Odessa Astronomical Publications (pp. 35)