NOAO >   Observing Info >   Approved Programs >   2019A-0377

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Program Information for 2019A-0377


PI: Ralf Kotulla, U. of Wisconsin, Madison, kotulla@wisc.edu
Address: Department of Astronomy, 475 N Charter St, Madison, WI 53706 USA

CoI: Jay Gallagher, U. of Wisconsin, Madison
CoI: Wilson Liu, WIYN
CoI: Adam Schaefer, U. of Wisconsin, Madison
CoI: Nikki Noughani, U. of Wisconsin, Madison
CoI: Elena D'Onghia, U. of Wisconsin, Madison
CoI: Undergrad X Tbd, U. of Wisconsin, Madison

Title: Galaxies growing up: From fields to groups to clusters

Abstract: We propose to continue to use ODI to obtain deep images of the nearby Cancer and Ursa Major galaxy super groups. The prime target, UMa, is falling towards Virgo and thus is a laboratory for studies of preprocessing. Some properties of cluster galaxies, such as an overall tendency to be dynamically hot, requires a factor that affects some galaxies before they enter the cluster. This is usually understood in terms of pre-processing, environmental factors that impact galaxies as they are infalling to clusters. Although the details of pre-processing are yet to be clearly identified, it most likely takes the form of galaxy-galaxy and galaxy-group interactions as galaxy groups approach clusters. Our project thus focuses on detecting and mapping stellar debris associated with interactions in the UMa super group and dwarf galaxy properties to place constraints on preprocessing of dwarf and giant galaxies. Our ODI runs in March and April 2018 successfully revealed the properties of several interactions, thereby establishing the feasibility of this project. We now request time to extend our imaging to a more members and a larger area of the UMa super group as well as the poorly studied Cancer cluster.

Program Type: WTAC

Scheduled Nights:
Run 1 (2019A):  WIYN/ODI -- 2n on Feb 24 - Feb 25 2019
Run 2 (2019A):  WIYN/WHIRC -- 2.5n on Feb 04 2019, Feb 07 - Feb 08 2019


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2019A-0377

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