Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2011-03-14
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
accepted by MNRAS
Scientific paper
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.
Asplund Martin
Bland-Hawthorn Jonathan
de Silva Gayandhi M.
Freeman Ken C.
Holmberg Johan
No associations
LandOfFree
High resolution elemental abundance analysis of the Hyades Supercluster does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High resolution elemental abundance analysis of the Hyades Supercluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High resolution elemental abundance analysis of the Hyades Supercluster will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-259020