Identification of Globular Cluster Stars in RAVE data II: Extended tidal debris around NGC 3201

Abstract

We report the identification of extended tidal debris potentially associated with the globular cluster NGC 3201, using the RAVE catalogue. We find the debris stars are located at a distance range of 1-7 kpc based on the forthcoming RAVE distance estimates. The derived space velocities and integrals of motion show interesting connections to NGC 3201, modulo uncertainties in the proper motions. Three stars, which are among the 4 most likely candidates for NGC 3201 tidal debris, are separated by 80 degrees on the sky yet are well matched by the 12 Gyr, [Fe/H] = -1.5 isochrone appropriate for the cluster. This is the first time tidal debris around this cluster has been reported over such a large spatial extent, with implications for the cluster${}^{\prime }$s origin and dynamical evolution.

Accepted 2016 January 8. Received 2015 December 10; in original form 2015 November 13 MNRAS

References in corpus (10)

• galpy: A Python Library for Galactic Dynamics
• The Radial Velocity Experiment (RAVE): first data release
• Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. I. Sample Selection, Data Reduction and NGC 7078 Results
• The SEGUE Stellar Parameter Pipeline. IV. Validation with an Extended Sample of Galactic Globular and Open Clusters
• Back to the Future: Estimating Initial Globular Cluster Masses from their Present Day Stellar Mass Functions
• Space Velocities of Southern Globular Clusters. V. A Low Galactic Latitude Sample
• Characterizing the High-Velocity Stars of RAVE: The Discovery of a Metal-Rich Halo Star Born in the Galactic Disk
• The origin of the spurious iron spread in the globular cluster NGC 3201
• Spectroscopic Signatures of Extra-Tidal Stars Around the Globular Clusters NGC 6656 (M22), NGC 3201 and NGC 1851 from RAVE
• Searching for tidal tails around $\omega$ Centauri using RR Lyrae Stars

Cited by in corpus (13)

• The Radial Velocity Experiment (RAVE): Fifth Data Release
• The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
• The RAVE-on catalog of stellar atmospheric parameters and chemical abundances for chemo-dynamic studies in the Gaia era
• Discovery of a Metal-Poor Field Giant with a Globular Cluster Second-Generation Abundance Pattern
• Purveyors of fine halos: Re-assessing globular cluster contributions to the Milky Way halo build-up with SDSS-IV
• Exploring the outskirts of globular clusters: the peculiar kinematics of NGC 3201
• Search for Extra-Tidal RR Lyrae Stars in Milky Way Globular Clusters From Gaia DR2
• The dynamics of the globular cluster NGC3201 out to the Jacobi radius
• The tidal stream generated by the globular cluster NGC 3201
• The GeMS/GSAOI Galactic Globular Cluster Survey (G4CS) I: A Pilot Study of the stellar populations in NGC 2298 and NGC 3201
• New halo stars of the Galactic globular clusters M3 and M13 in the LAMOST DR1 Catalog
• A proper motions study of the globular cluster NGC 3201
• Are the double-mode bulge RR Lyrae stars with identical period-ratios the relic of a disrupted stellar system?