PI: Michael Rodruck, Pennsylvania State U., email@example.com
Address: 525 Davey Lab, University Park, PA, 16802 USA
CoI: Jane C Charlton, Pennsylvania State U.
CoI: Sarah Gallagher, University of Western Ontario
Title: Stellar Populations in Tidal Tails
Abstract: Tidal tails are becoming increasingly recognized as important environments for star formation. However, the majority of star clusters formed in tails do not survive old age, as they are subject to internal and external forces which disrupt them and disperse their contents into the tidal debris. Evidence for these clusters, and thus past star formation, may therefore be seen in the diffuse light, while present day star formation is seen in the young, bound clusters. These observations can be combined with HI data, allowing us to link HI density and kinematics to tidal tail star formation. We completed a pilot study with NGC 3256, finding young diffuse light, as well as young star clusters, living in regions of low HI shear. We propose to further our sample with 7.1 hours of GMOS-S time, studying the stellar populations of NGC 520 and NGC 1614. These observations will provide a powerful tool in linking the local HI to the star formation history in tidal debris.
Program Type: Standard/Extragalactic
Run 1 (2017B): GEM-SQ/GMOSS -- 3.6hrs band 2 (GS-2017B-Q-55)
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360