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Mathematical Morphology: Star/Galaxy Differentiation & Galaxy Morphology Classification
Moore, Jason A.; Pimbblet, Kevin A.; Drinkwater, Michael J.
We present an application of Mathematical Morphology (MM) for the classification of astronomical objects, both for star/galaxy differentiation and galaxy morphology classification. We demonstrate that, for CCD images, 99.3+/-3.8% of galaxies can be separated from stars using MM, with 19.4+/-7.9% of the stars being misclassified. We demonstrate tha…
Saturn's Icy Moon Rhea: A Prediction for its Bulk Chemical Composition and Physical Structure at the Time of the Cassini Spacecraft First Flyby
Prentice, Andrew J. R.
I report a model for the formation of Saturn's family of mid-sized icy moons to coincide with the first flypast of Rhea by the Cassini spacecraft on 2005 November 26. It is proposed that the moons had condensed from a concentric family of orbiting gas rings that were shed some 4.6 × 109 yr ago by the proto-Saturnian (hereafter p-Sat) cl…