The Hyades tidal tails revealed by Gaia DR2

2018/11/09 by Siegfried Röser, Elena Schilbach, Bertrand Goldman · 2 citations
Physics and Astronomy · #astro-ph.SR #astro-ph.GA

paper · pdf · doi:10.1051/0004-6361/201834608

published as A&A 621, L2 (2019) · 4 pages, 4 figures

arxiv created 2018/11/09 · arxiv updated 2019/01/09

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.

Cited by

• Extended stellar systems in the solar neighborhood - I. The tidal tails of the Hyades
• Revisiting open clusters within 200 pc in the solar neighbourhood with Gaia DR3

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