NOAO >   Observing Info >   Approved Programs >   2014A-0074

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Proposal Information for 2014A-0074


PI: Don Figer, Rochester Institute of Technology (CIS), figer@cfd.rit.edu
Address: Center for Imaging Science, 54 Lomb Memorial Drive, Rochester, NY 14623-5604, USA

CoI: Nate Bastian, Liverpool John Moores University
CoI: Ben Davies, Liverpool John Moores University
CoI: Morten Andersen, Institut de Planétologie et d’Astrophysique de Grenoble

Title: Constraining the Properties of GLIMPSE-C01 - potentially the most massive young cluster in the Galaxy

Abstract: We have recently confirmed that Glimpse-C01 is a massive stellar cluster in the Galactic Plane, with a mass in excess of 10^5 Msun. However, the true nature of the cluster remains unclear - is it an old metal-poor globular cluster passing through the plane of the Galaxy, or is it a metal-rich ( solar) disk-borne cluster some few hundred Myr old? If it is the latter, Glimpse-C01 would be the most massive Galactic cluster known to have formed in the last 10 Gyr and it will offer a unique glimpse into massive clusters (i.e., are multiple populations - spreads in age/metallicity - a common feature, or limited to old globulars?). Here, we propose a program of deep near-IR imaging and high precision point-source photometry to study the faint end of the cluster's colour-magnitude diagram in order to precisely age date the cluster. If the cluster is an intermediate age massive cluster in the Galaxy (the only one known), it will open up a plethora of follow up studies.


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NOAO >   Observing Info >   Approved Programs >   2014A-0074

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