EDP Sciences
Free access
Volume 438, Number 3, August II 2005
Page(s) 957 - 962
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20042287

A&A 438, 957-962 (2005)
DOI: 10.1051/0004-6361:20042287

A study of Kapteyn's star

E. Kotoneva1, 2, K. Innanen2, P. C. Dawson3, 4, P. R. Wood5 and M. M. De Robertis2

1  Tuorla Observatory, Väisäläntie 20, 21500 Piikkiö, Finland
    e-mail: eira.kotoneva@tyks.fi
2  Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
3  Department of Physics, Trent University, Peterborough, ON, K9J 7B8, Canada
4  Guest user, Canadian Astronomy Data Centre, operated by the Herzberg Institute of Astrophysics, National Research Council of Canada
5  Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston ACT 2611, Australia

(Received 1 November 2004 / Accepted 15 February 2005 )

We present a review of the current knowledge of Kapteyn's Star (KS) - a nearby, low-metallicity M-dwarf, with an eccentric and retrograde Galactic orbit. A brief survey of its spectroscopic properties is provided, together with an analysis of its Galactic orbit in a Galaxy model that incorporates resonances. We propose that KS may have once belonged to a dwarf spheroidal galaxy that merged with the Galaxy, and whose present remnant, if it still exists, is a globular cluster similar to $\omega$ Cen.

Key words: stars: late-type -- stars: general

SIMBAD Objects

© ESO 2005