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A consistency-test for determining whether ultra-compact dwarf galaxies could be the remnant nuclei of threshed galaxies
Alister W. Graham
It has been suggested that ultra-compact dwarf (UCD) galaxies are the "threshed'" remains of larger galaxies. Simulations have revealed that extensive tidal-stripping may pare a ga…
. I. Understanding galaxy sizes, associated luminosity densities, and the artificial division of the early-type galaxy population
Alister W. Graham
The deceptive simplicity of the radius enclosing an arbitrary 50 percent of a galaxy's light has hamstrung the understanding of early-type galaxies (ETGs). Half a century ago, usin…
Revealing Hidden Substructures in the - Diagram, and Refining the Bend in the - Relation
Nandini Sahu, Alister W. Graham, Benjamin L. Davis
Using 145 early- and late-type galaxies (ETGs and LTGs) with directly-measured super-massive black hole masses, , we build upon our previous discoveries that: (i) LTGs, mos…
A galaxy classification grid that better recognises early-type galaxy morphology
Alister W. Graham
A modified galaxy classification scheme for local galaxies is presented. It builds upon the Aitken-Jeans nebula sequence, by expanding the Jeans-Hubble tuning fork diagram, which i…
Black Hole Mass Scaling Relations for Early-Type Galaxies: - and -
Nandini Sahu, Alister W. Graham, Benjamin L. Davis
Analyzing a sample of 84 early-type galaxies with directly-measured super-massive black hole masses---nearly doubling the sample size of such galaxies with multi-component decompos…
A Consistent Set of Empirical Scaling Relations for Spiral Galaxies: The - Relations
Benjamin L. Davis, Alister W. Graham, Françoise Combes
Using the latest sample of 48 spiral galaxies having a directly measured supermassive black hole mass, , we determine how the maximum disk rotational velocity, (a…