Topic017: Relating T To Properties of Galaxies, T = 1, 5, and 6, Bill Tifft 4/18/16

The William Tifft Blog

Topic017: Relating T To Properties of Galaxies, T = 1, 5, and 6, Bill Tifft 4/18/16

Topic_017_S3F12-S3F13_t Book figures 3.12 & 3.13

Topic_017_S3F14-S3F47_b Book figures 3.14 & 3.47

As discussed in the previous Topic016 it is clear that T = 0 periodicities are dominate or present in some form at essentially all 21-cm profile widths. A comprehensive table, containing more than 30 entries, of results on T = 0 searches locally, and in Virgo, Cancer and Perseus studies, is provided in my figure 3.17. (For book information or acquisition see Post001 and Post002.) Topic014 indicated that galaxies with wide 21 cm profiles fall in or include the T = 6 family. A `break’ in phase-width diagrams near 200 km/s width appears to represent a transition point where systems pass, or distinguish, between giant and dwarf forms. It appears that such breaks occur at widths where evolving galaxies may not accommodate successive…

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