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Journal articles

Hyades tidal tails revealed by Gaia DR2

Abstract : Aims. Within a 200 pc sphere around the Sun, we search for the Hyades tidal tails in the Gaia DR2 dataset. Methods. We used a modified convergent-point method to search for stars with space velocities close to the space velocity of the Hyades cluster. Results. We find a clear indication for the existence of the Hyades tidal tails, a leading tail extending up to 170 pc from the centre of the Hyades with 292 stars (36 contaminants), and a trailing 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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Contributor : Olivier Hauss Connect in order to contact the contributor
Submitted on : Sunday, February 28, 2021 - 5:22:09 PM
Last modification on : Wednesday, November 3, 2021 - 5:27:53 AM
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Siegfried Röser, Elena Schilbach, Bertrand Goldman. Hyades tidal tails revealed by Gaia DR2. Astronomy and Astrophysics - A&A, EDP Sciences, 2019, 621, pp.L2. ⟨10.1051/0004-6361/201834608⟩. ⟨hal-03148414⟩



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