[28.12] Rotation Curve Fitting of Cluster and Field Galaxies Using a Dark Matter Model

AAS 205th Meeting, 9-13 January 2005
Session 28 Lensing: Micro, MACHO, Strong, Weak and Wide
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[28.12] Rotation Curve Fitting of Cluster and Field Galaxies Using a Dark Matter Model

R. A. Harbison (University of Nebraska -- Lincoln), D. Dale (University of Wyoming)

Given a collection of cluster and field galaxies’ H-alpha rotation curves and I-band profiles, my task was to write a program to model the dark matter halo of said galaxies and look for trends in the disk mass-to-light ratio, halo central density, and halo core radius. The relationships of these fitted parameters between each other and between observables, such as absolute magnitude and cluster-centric distance, are examined, and the overall utility of the program in modeling galaxies is discussed.

This work has been supported by NSF REU grant AST-0353760.

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