Spring 2003
Tuesdays 12:15 Goldwater 604
Seminar Schedule:<http://math.la.asu.edu/~tom/cognition/math+cogsched.html>
On Tuesday, April 1, at 12:15 PM in GWC 604,
the Mathematics and Cognition Seminar will present
a brief lecture by Dr. Steve Odewahn of the Department
of Physics,
on the topic of:
| I'll discuss modern methods of automated galaxy classification
that employ artificial neural networks to analyze images from the Hubble
Space Telescope as well as other large ground-based telescopes. Such work
is used as an observational basis for understanding the formation and evolution
of galaxies. I'll present a morphological approach to automated galaxy
classification based on the Fourier reconstruction of galaxy images and the
subsequent pattern analysis based on the amplitude and phase angle of the
Fourier components. This method quantitatively detects the presence
of and characterizes the properties of spiral arms, bars and rings. Detrmining
the frequency of such galaxy features as a fucntion of cosmic lookback time
will allow us to piece together of how galaxies form |