Kinematics of fainst stars of the Sco-Cen association according to Gaia catalog

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The kinematic properties of the Sco-Cen association are studied using the spatial velocities of young stars. New kinematic age estimates for the three components of the association were obtained, with the age of UCL and LCC being 17.7 ± 2.4 Myr, and the age of US being 6.4 ± 1.7 Myr. The parameters of the residual velocities US, UCL and LCC were estimated.

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V. Bobylev

Central Astronomical Observatory of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: bob-v-vzz@rambler.ru
俄罗斯联邦, Pulkovo

A. Bajkova

Central Astronomical Observatory of the Russian Academy of Sciences

Email: bob-v-vzz@rambler.ru
俄罗斯联邦, Pulkovo

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2. Fig. 1. The centers of the three main components of the Sco-Cen association, marked by circles of arbitrary size, in projection onto the galactic plane xy and their trajectories in the past over a time interval of 30 million years (a), the distribution of these groups on the plane z, t (b), and also the dependence of the parameter q on time t (c).

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3. Fig. 2. The position of the US and UCL centers on the xy plane and their trajectories in the past over a time interval of 20 million years, with residual velocity ellipsoids schematically shown (a), the position of the UCL and LCC centers on the xy plane and their trajectories in the past over a time interval of 30 million years (b), with confidence regions corresponding to 1σ errors in the initial velocities marked for each trajectory.

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