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28 papers · 1 filter
Gas Mass Fractions and the Evolution of Spiral Galaxies
Stacy S. McGaugh, W. J. G. de Blok
We show that the gas mass fraction of spiral galaxies is strongly correlated with luminosity and surface brightness. It is not correlated with linear size. Gas fraction varies with…
Distant Galaxy Clusters Identified From Optical Background Fluctuations
Dennis Zaritsky, Amy E. Nelson, Julianne J. Dalcanton +1
We present the first high redshift (0.3 < z < 1.1) galaxy clusters found by systematically identifying optical low surface brightness fluctuations in the background sky. Using spec…
Gas Content and Star Formation Thresholds in the Evolution of Spiral Galaxies
Stacy McGaugh, Erwin de Blok
The gas mass fraction (fg) of spiral galaxies is strongly correlated with the central surface brightness of their disks. There exist many dim galaxies with long gas consumption tim…
Dynamical Stability and Galaxy Evolution in LSB Disk Galaxies
Chris Mihos, Stacy McGaugh, Erwin de Blok
We demonstrate that, due to their low surface mass density and large dark matter content, LSB disks are quite stable against the growth of global bar modes. However, they may be on…
The Formation of Disk Galaxies
J. J. Dalcanton, D. N. Spergel, F J Summers
We present a scenario for the formation of disks which explains not only the properties of normal galaxies, but the properties of the population of low surface brightness galaxies…
A Catalog of Morphological Types in 10 Distant Rich Clusters of Galaxies
Ian Smail, Alan Dressler, Warrick J. Couch +4
We present catalogs of objects detected in deep images of 11 fields in 10 distant clusters obtained using WFPC-2 on board the Hubble Space Telescope. The clusters span the redshift…