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The Morphological Evolution of Galaxies
Roberto G. Abraham, Sidney van den Bergh
Many galaxies appear to have taken on their familiar appearance relatively recently. In the distant Universe, galaxy morphology started to deviate significantly (and systematically…
How Did Globular Clusters Form?
Sidney van den Bergh
It is suggested that there have been at least two physically distinct epochs of massive cluster formation. The first generation of globular clusters may have formed as halo gas was…
The Evolution of Galaxy Morphology for Galaxies in the Canada-France Redshift Survey
Sidney van den Bergh
The images of 229 galaxies in the Canada France Redshift Survey have been classified on the DDO system. These observations were combined with previous classifications of galaxies w…
Caltech Faint Galaxy Redshift Survey XV: Classification of Galaxies with 0.2 < z < 1.1 in the Hubble Deep Field (North) and its Flanking Fields
Sidney van den Bergh, Judith G. Cohen, Christopher Crabbe
To circumvent the spatial effects of resolution on galaxy classification, the images of 233 objects of known redshift in the Hubble Deep Field (HDF) and its Flanking Fields (FF) th…
The Detection of Bright Asymptotic Giant Branch Stars in the Nearby Elliptical Galaxy Maffei 1
T. J. Davidge, Sidney van den Bergh
We have used the adaptive optics system on the Canada-France-Hawaii Telescope to study a field 6 arcmin from the center of the heavily obscured elliptical galaxy Maffei 1. Our near…
The Expansion Center and Dynamical Age of the Galactic Supernova Remnant Cassiopeia A
John R. Thorstensen, Robert A. Fesen, Sidney van den Bergh
We present proper motions for 21 bright main shell and 17 faint, higher-velocity, outer ejecta knots in the Cas A supernova remnant and use them to derive new estimates for the rem…