Evidence of tidal debris from Omega Cen in the Kapteyn Group

Abstract

This paper presents a detailed kinematic and chemical analysis of 16 members of the Kapteyn moving group. The group does not appear to be chemically homogenous. However, the kinematics and the chemical abundance patterns seen in 14 of the stars in this group are similar to those observed in the well-studied cluster, Omega Centauri. Some members of this moving group may be remnants of the tidal debris of Omega Cen, left in the Galactic disk during the merger event which deposited Omega Cen into the Milky Way.

30 pages, 9 figures, 11 tables. Accepted for publication in AJ

References in corpus (4)

• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• Chemically Tagging the HR1614 Moving Group
• Fashionably Late? Building up the Milky Way's Inner Halo
• Signatures of star streams in the phase space distribution of nearby halo stars

Cited by in corpus (36)

• The GALAH Survey: Scientific Motivation
• Evidence for Two Early Accretion Events That Built the Milky Way Stellar Halo
• On the fraction of star formation occurring in bound stellar clusters
• M 54 + Sagittarius = omega Centauri
• Spectroscopy Unveils the Complex Nature of Terzan 5
• Two planets around Kapteyn's star : a cold and a temperate super-Earth orbiting the nearest halo red-dwarf
• Exploring Halo Substructure with Giant Stars: Substructure in the Local Halo as Seen in the Grid Giant Star Survey Including Extended Tidal Debris from Omega Centauri
• Living with a Red Dwarf: Rotation and X-ray and Ultraviolet Properties of the Halo Population Kapteyn's Star
• Formation of Multiple Populations in Globular Clusters: Another Possible Scenario
• The Dawning of the Stream of Aquarius in RAVE
• Stellar halo streams in the Solar neighbourhood
• Spectroscopic Signatures of Extra-Tidal Stars Around the Globular Clusters NGC 6656 (M22), NGC 3201 and NGC 1851 from RAVE
• Planets Across Space and Time (PAST). I. Characterizing the Memberships of Galactic Components and Stellar Ages: Revisiting the Kinematic Methods and Applying to Planet Host Stars
• NGC 5824: a luminous outer halo globular cluster with an intrinsic abundance spread
• Through Thick and Thin: Kinematic and Chemical Components in the Solar Neighbourhood
• Resonant Trapping in the Galactic Disc and Halo and its Relation with Moving Groups
• Searching for tidal tails around $\omega$ Centauri using RR Lyrae Stars
• Estimating the Ultraviolet Emission of M dwarfs with Exoplanets from Ca II and H$\alpha$
• CD-62\degree1346: an extreme halo or hypervelocity CH~star?
• Hunting the Parent of the Orphan Stream II: The First High-Resolution Spectroscopic Study
• RAVE stars tidally stripped/ejected from $\omega$ Centauri globular cluster
• Ultra-Compact Dwarfs around NGC 3268
• The Kapteyn moving group is not tidal debris from $\omega$ Centauri
• Sulphur abundances in halo giants from the [S I] line at 1082 nm and the S I triplet around 1045 nm
• The dynamics of the outer parts of omega Centauri
• Manganese Abundances in the Globular Cluster Omega Centauri
• Tracing the origin of the Aquarius Stream: I
• Asymmetric metallicity patterns in the stellar velocity space with RAVE
• Kinematically Detected Halo Streams
• Accurate Modeling of Lyman-alpha Profiles and their Impact on Photolysis of Terrestrial Planet Atmospheres
• A new formation model for omega Centauri: the crossroad of astrophysical processes
• Does the Oosterhoff Dichotomy Exist in The Andromeda Galaxy? I. The case of G11
• The Aquarius Co-Moving Group is Not a Disrupted Classical Globular Cluster
• More pieces of the puzzle: Chemistry and substructures in the Galactic thick disk
• Abundance analysis of a sample of evolved stars in the outskirts of Omega Centauri
• Combining Astrometry and Elemental Abundances: The Case of the Candidate Pre-Gaia Halo Moving Groups G03-37, G18-39, and G21-22