HD 158450: A MAGNETIC CHEMICALLY PECULIAR STAR IN A YOUNG STELLAR GROUP
DOI:
https://doi.org/10.18524/1810-4215.2008.21.87014Ключові слова:
Stars, magnetic fields, stars, individual, HD 158450, HD 66318Анотація
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 12of 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.Посилання
Bagnulo S., Landstreet J.D., Lo Curto G., Szeifert T., Wade G.A.: 2003, A&A, 403, 645
Bidelman W.P., MacConnell D.J. 1973, AJ, 78, 687
Jilinski E.G., Ortega V.G., de la Reza R., Drake N.A., Bazzanella B.: 2008, arXiv: astro-ph/08101198 (to be published in ApJ, January 2009)
Hauck B., North P . 1993, A&A, 269, 403
Kudryavtsev D.O., Romanyuk I.I., Elkin V.G., Paunzen E. 2006, MNRAS, 372, 1804
Lejeune T., Schaerer D.: 2001, A&A, 366, 538
Mamajek E.E. 2006, AJ, 132, 2198
Mathys G., Hubrig S., Landstreet, J.D., Lanz T., Manfroid J.: 1997, A&AS, 123, 353
Rufener F. 1988, GENEV A Photometric Catalogue, 4th edition, Observatoire de Geneve
Schaller G., Schaerer, D., Meynet, G., Maeder, A. 1992, A&AS, 96, 269
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