Hyades tidal tails revealed by Gaia DR2

• Verfasst von: Röser, Siegfried [VerfasserIn]
• Verfasst von: Schilbach, Elena [VerfasserIn]
• Verfasst von: Goldman, Bertrand [VerfasserIn]
• Titel: Hyades tidal tails revealed by Gaia DR2
• Verf.angabe: Siegfried Röser, Elena Schilbach, and Bertrand Goldman
• E-Jahr: 2019
• Jahr: 04 January 2019
• Umfang: 5 S.
• Fussnoten: Gesehen am 16.10.2020
• Titel Quelle: Enthalten in: Astronomy and astrophysics
• Ort Quelle: Les Ulis : EDP Sciences, 1969
• Jahr Quelle: 2019
• Band/Heft Quelle: 621(2019) Artikel-Nummer L2, 5 Seiten
• ISSN Quelle: 1432-0746
• DOI: doi:10.1051/0004-6361/201834608
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1586544004

Abstract

Within a 200 pc sphere around the Sun, we search for the Hyades tidal tails in the <i>Gaia<i/> DR2 dataset.<i>Methods<i/>. We used a modified convergent-point method to search for stars with space velocities close to the space velocity of the Hyades cluster.<i>Results<i/>. 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.