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Star Formation in Galaxies with Large Lower Surface Brightness Disks
K. O'Neil, S. Oey, G. Bothun
We present B, R, and Halpha imaging data of 19 large disk galaxies whose properties are intermediate between classical low surface brightness galaxies and ordinary high surface bri…
Star Formation in HI Selected Galaxies. II. HII Region Properties
J. F. Helmboldt, R. A. M. Walterbos, G. D. Bothun +1
A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) to deduce details about star formation in nearby disk gal…
The Baryonic Tully-Fisher Relation
Stacy McGaugh, Jim Schombert, Greg Bothun +1
We explore the Tully-Fisher relation over five decades in stellar mass in galaxies with circular velocities ranging over 30 < Vc < 300 km/s. We find a clear break in the optical Tu…
Structural Characteristics of Faint Galaxies Serendipitously Discovered with the HST WFPC2
Karen O'Neil, G. D. Bothun, C. D. Impey
[Abridged] HST WFPC2 images were taken of four low surface brightness galaxies in the direction of the Virgo cluster. The high resolution of the WFPC2 combined with the extremely d…
Deviations from the Fundamental Plane and the Peculiar Velocities of Clusters
R. A. Gibbons, A. S. Fruchter, G. D. Bothun
We have fit the Fundamental Plane of Ellipticals (FP) to over 400 early-type galaxies in 20 nearby clusters (4000 < cz < 11000 km/s), using our own photometry and spectroscopy as w…
The Effects of Starburst Activity on Low Surface Brightness Disk Galaxies
Karen O'Neil, G. D. Bothun, J. Schombert
Although numerous simulations have been done to understand the effects of intense bursts of star formation on high surface brightness galaxies, few attempts have been made to under…