Close encounters involving RAVE stars beyond the 47 Tucanae tidal radius

Close encounters involving RAVE stars beyond the 47 Tucanae tidal radius

The most accurate six-dimensional (6D) phase-space information from the Radial Velocity Experiment (RAVE) was used to integrate the orbits of 105 stars around the galactic globular cluster 47 Tucanae, to look for close encounters between them in the past with a minimum distance approach less than th...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2016-09, Vol.461 (2), p.1404-1412
Hauptverfasser: Fernández-Trincado, J. G., Robin, A. C., Reylé, C., Vieira, K., Palmer, M., Moreno, E., Valenzuela, O., Pichardo, B.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Astrophysics
Axisymmetric
Clusters
Confidence intervals
Escape velocity
Globular clusters
Milky Way
Monte Carlo methods
Monte Carlo simulation
Orbits
Physics
Star & galaxy formation
Stars
Velocity
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Beschreibung
Zusammenfassung:The most accurate six-dimensional (6D) phase-space information from the Radial Velocity Experiment (RAVE) was used to integrate the orbits of 105 stars around the galactic globular cluster 47 Tucanae, to look for close encounters between them in the past with a minimum distance approach less than the cluster tidal radius. The stars are currently spread over the distance range 3.0 kpc 
ISSN:0035-8711
1745-3933
1365-2966
DOI:10.1093/mnras/stw1258