000001883 001__ 1883
000001883 005__ 20160701171654.0
000001883 037__ $$aASTROimport-40
000001883 100__ $$aCarette, E.
000001883 245__ $$aγ Circinus: a young visual binary with pre-main-sequence component(s)?
000001883 260__ $$c1995
000001883 520__ $$aAn analysis of the evolutionary stage of the bright, close visual pair γ Cir is given. From the observed spectral types and apparent visual magnitudes of the components and the comparison with stellar evolutionary computations we deduce that the members of this system, discovered in 1835, cannot both be evolving rightward in the Hertzprung-Russell diagram: at least the F8 component is a pre-main sequence object. On the other hand, a re-analysis of all available astrometric data shows that the observations can be fitted either by rectilinear or elliptical motion. Very accurate data collected during several more years would be needed to distinguish between both. However, should the binary nature be confirmed in the future, then - according to considerations based on stellar evolution - γ Cir appears to be a pre-main sequence binary system. 
000001883 700__ $$a De Greve, J. P.
000001883 700__ $$a van Rensbergen, W.
000001883 700__ $$a Lampens, P.
000001883 773__ $$c139$$pAstronomy and Astrophysics$$v296$$y1995
000001883 85642 $$ahttp://esoads.eso.org/abs/1995A%26A...296..139C
000001883 905__ $$apublished in
000001883 980__ $$aREFERD