High resolution elemental abundance analysis of the Hyades Supercluster
arXiv:1103.2588 · doi:10.1111/j.1365-2966.2011.18728.x
Abstract
The existence of a kinematically defined moving group of stars centred at U = -40, V = -17 km/s referred to as the Hyades Supercluster, has been suggested as the debris of an originally large star forming event, with its core being the present day Hyades open cluster. Using high-resolution UVES spectra, we present elemental abundances for a range of alpha, Fe-peak and neutron-capture elements for 26 proposed supercluster stars. Our results show that the sample stars display a heterogeneous abundance distribution, with a clump around [Fe/H] = +0.15. We also calculate stellar radial velocities and U,V,W space velocities. Enforcing a strict chemical and kinematical membership criteria, we find 4 supercluster stars share the Hyades open cluster abundances and kinematics, while many of the remaining stars fit the disc field kinematics and abundance range. We discuss our findings in the context of the Hyades supercluster being a dispersed star-forming remnant, a stellar stream of purely dynamical origin or a result of several processes.
accepted by MNRAS
References in corpus (9)
- alpha-, r-, and s-process element trends in the Galactic thin and thick disks
- DAOSPEC: an automatic code for measuring equivalent widths in high-resolution stellar spectra
- Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging
- Disentangling the Hercules stream
- Origin and evolution of moving groups I. Characterization in the observational kinematic-age-metallicity space
- Chemically Tagging the HR1614 Moving Group
- The velocity distribution of nearby stars from Hipparcos data I. The significance of the moving groups
- A Catalog of Moving Group Candidates in The Solar Neighborhood
- O and Na abundance patterns in open clusters of the Galactic disk
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