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The local environment of type Ia supernovae as seen with IFS

Lluis Galbany (University of Pittsburgh)

A particular type of supernova explosions, those that result from the thermonuclear explosions of white dwarfs in binary systems and are known as type Ia, are the most accurate extragalactic distance indicators to date. There is a known correlation between the maximum brightness of a type Ia supernova and how fast its brightness declines after two weeks. Astronomers use that information to standardize its peak brightness to a common value, and use the difference between what they observe and this common value to measure distances. As if several similar bulbs with the same brightness are spread at different distances. this proposal tries to be more precise in this standardization by studying the locations in galaxies where they occur.