The Structure of the Galaxy as Determined from its Field Stars

Details The Structure of the Galaxy as Determined from its Field Stars The Structure of the Galaxy as Determined from its Field Stars

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.0802l&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #08.02; Bulletin of the American Astronomical Society, Vol. 28, p.835

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the preliminary results of a globally fitted galactic model to our eighty-eight selected galactic structure fields. The fields are from the Minnesota Automated Plate Scanner Catalog of the first epoch Palomar Observatory Sky Survey. Our fitting technique is a stochastic search based on a genetic algorithm. This technique is superior in computing time to those requiring numerical derivatives or a grid search. In addition we can examine solutions by fitness, giving a method for determining covariance between model parameters in the best few percent of possible solutions. The presentation will also include several visualizations of data and models.

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