| | Hoag's Object Supplemental Material |
 | | Categories B and C were composed of objects which looked more like polar ring galaxies, but which lacked the conclusive spectroscopic evidence, and category D was a broader category which incorporated more objects of varied types which were possiby related to polar rings. |
| | In earlier days, most galaxies were not considered "pathological", but were seen as being of certain well-defined morphological types, and our picture of the universe was of a somewhat less dynamic, less interactive place when we thought of galaxies. |
| | He suggested that accretions onto ellipticals might differ from accretions onto S0 galaxies which tend to lack gas, and that differences in the shape of the gravitational potentials might play a crucial role, as might the existence or lack of any hot X-ray-emitting gas. |
| heritage.stsci.edu /2002/21/lucas_files/lucas.html (85 words) |
