description R. Brent Tully Overview
R. Brent Tully is an American astronomer at the University of Hawaii notable for co-developing the Tully-Fisher relation and defining the Laniakea Supercluster in 2014.
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What is the Tully-Fisher relation developed by R. Brent Tully?
Co-developed in 1977 with J. Richard Fisher, the Tully-Fisher relation is an empirical correlation between the luminosity of a spiral galaxy and its rotational velocity. It is widely used by astronomers to calculate accurate distances to galaxies.
What is the Laniakea Supercluster?
In 2014, Tully and his research team defined the Laniakea Supercluster, a massive structure of 100,000 galaxies that includes our own Milky Way. The name translates to 'immense heaven' in Hawaiian.
Where is R. Brent Tully currently employed?
He works as an astronomer at the Institute for Astronomy in Honolulu, Hawaii. The institute is a prominent research division within the University of Hawaii system.
How did Brent Tully map the Laniakea Supercluster?
Instead of just looking at 2D maps, Tully's team tracked the 3D peculiar motions of roughly 8,000 nearby galaxies. This allowed them to identify the gravitational watershed where galaxies flow toward the 'Great Attractor.'
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