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arXiv · 1811.03845

The Hyades tidal tails revealed by Gaia DR2

Siegfried Röser·Elena Schilbach·Bertrand Goldman
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Abstract

Within a 200 pc sphere around the Sun we search for the Hyades tidal tails in the Gaia DR2 dataset. We use a modified convergent point method to search for stars with space velocities close to the space velocity of the Hyades cluster. We find a clear indication for the existence of the Hyades tidal tails, a preceding tail extending up to 170 pc from the centre of the Hyades with 292 stars (36 contaminants), and a following tail up to 70 pc with 237 stars (32 contaminants). A comparison with an N-body model of the cluster and its tails shows remarkably good coincidence. Five white dwarfs are found in the tails.

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Siegfried Röser, Elena Schilbach, Bertrand Goldman. 2018-11-09. The Hyades tidal tails revealed by Gaia DR2. https://doi.org/10.1051/0004-6361%2F201834608

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