A Three-Dimensional Model of the Pisces-Perseus Supercluster
During the spring of 2001 (during my freshman year at Cornell University), I spent some time working with Martha Haynes on modeling the Pisces-Perseus Supercluster using survey data containing positions and spectroscopic redshifts of 2380 galaxies in this region. While the distance to a galaxy is normally determined as a linear function of redshift (Hubble's Law), the orbital motion of galaxies in clusters introduced unacceptable errors in this method that distort the clusters on x-y-redshift plots into long fingers along the line of sight. I worked on developing a program to automatically recognize such candidate clusters in the data set and identify the galaxies inside of it for later analysis.
Cornell University Astronomy Department
Cornell Extragalactic Group
Hewitt Undergraduate Laboratory