Solving for Total Masses of Galaxies using Numerical Action Method

Details Solving for Total Masses of Galaxies using Numerical Action Method Solving for Total Masses of Galaxies using Numerical Action Method

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.1904s&link_type=abstract

American Astronomical Society Meeting 202, #19.04; Bulletin of the American Astronomical Society, Vol. 35, p.725

Astronomy and Astrophysics

Astronomy

Scientific paper

We will describe a new technique within the category of Numerical Action Methods in which one solves for acceptable individual total masses of galaxies along with the orbits in an expanding cosmology. We will present calculations done on simulated regions of radius 5 Mpc around the Milky Way that provide an understanding of the sensitivity of mass determinations on errors in distances and redshifts. In preparation for proper motion measurements to be provided by Space Interferometry Mission (SIM), we examine improvements in mass determinations when proper motions further constrain the orbit solutions.

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