SIMBAD references

2018ApJ...860...70C - Astrophys. J., 860, 70-70 (2018/June-2)

Chemodynamical clustering applied to APOGEE data: rediscovering globular clusters.

CHEN B., D'ONGHIA E., PARDY S.A., PASQUALI A., BERTELLI MOTTA C., HANLON B. and GREBEL E.K.

Abstract (from CDS):

We have developed a novel technique based on a clustering algorithm that searches for kinematically and chemically clustered stars in the APOGEE DR12 Cannon data. As compared to classical chemical tagging, the kinematic information included in our methodology allows us to identify stars that are members of known globular clusters with greater confidence. We apply our algorithm to the entire APOGEE catalog of 150,615 stars whose chemical abundances are derived by the Cannon. Our methodology found anticorrelations between the elements Al and Mg, Na and O, and C and N previously identified in the optical spectra in globular clusters, even though we omit these elements in our algorithm. Our algorithm identifies globular clusters without a priori knowledge of their locations in the sky. Thus, not only does this technique promise to discover new globular clusters, but it also allows us to identify candidate streams of kinematically and chemically clustered stars in the Milky Way.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): globular clusters: general - methods: data analysis - stars: abundances - stars: kinematics and dynamics

Simbad objects: 9

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2018ApJ...860...70C and select 'bookmark this link' or equivalent in the popup menu