NOAO >   Observing Info >   Approved Programs >   2018A-0444

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Program Information for 2018A-0444


PI: Jeffrey Gerber, Indiana U., jemigerb@indiana.edu
Address: Astronomy Department, 727 E. 3rd St., Bloomington, IN 47405 USA

CoI: Eileen Friel, Indiana U.
CoI: Enrico Vesperini, Indiana U.
CoI: Michael M Briley, Appalachian State U.

Title: The WIYN Indiana Northern Globular Cluster Survey: Low and High Resolution Spectroscopy of Milky Way Globular Clusters

Abstract: Globular clusters in the Milky Way are not simple stellar populations, but rather contain the products of multiple epochs of star formation. The discovery of multiple stellar populations in globular clusters, as revealed by both photometric and spectroscopic studies, has raised fundamental questions concerning all aspects of their formation and dynamical evolution. Accurately measuring the properties of Milky Way globular clusters is necessary to address these questions. We plan to increase the sample of stars observed as part of a comprehensive spectroscopic survey of several Milky Way globular clusters to thoroughly quantify the properties of these clusters and their stellar populations. One observing run will focus on mapping the behavior of CN band strengths which are known to differ between globular cluster generations using low resolution spectroscopic observations of large samples of evolved stars with Hydra. A second run using high resolution spectroscopic observations of the same stars will allow precise velocity measurements, which will provide information about the kinematics of the populations in each cluster and the rotation of the cluster itself.

Program Type: ITAC

Scheduled Nights:
Run 1 (2018A):  WIYN/HYDR -- 3n on Apr 22 - Apr 24 2018
Run 2 (2018A):  WIYN/HYDR -- 2n on May 25 - May 26 2018


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NOAO >   Observing Info >   Approved Programs >   2018A-0444

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