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Astronomy Colloquium

Wednesday, January 16, 2019
4:00pm to 5:00pm
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Cahill, Hameetman Auditorium
Dwarf Galaxies and Their Black Holes
Jenny Greene, Princeton,

Because they are dark-matter dominated, dwarf galaxies provide some of the most stringent tests of our cold dark matter model. We continue to debate whether the number densities and distributions of low-mass galaxies match theoretical expectations. I will describe how the advent of deep and wide-area surveys like the Hyper-Suprime Camera (HSC) Survey (and eventually LSST) are changing our ability to find and characterize low-mass, low surface-brightness populations. First, I will present a new calibration of surface-brightness fluctuations to the blue, which will provide a powerful new tool to determine satellite luminosity functions around nearby galaxies. Second, I will talk about our ongoing search for low-surface brightness galaxies is all environments with the HSC survey.  Finally, if time permits, I will discuss the massive black hole populations in low-mass galaxies.

For more information, please contact Althea E. Keith by phone at 626-395-4973 or by email at [email protected].