Research Division Seminar
A historical perspective on the concept of galaxy size

Abstract

In this seminar, we will explore how the development of imaging techniques, from the use of photographic plates in the 1930s to current CCD imaging, impacted the definition and measurement of galaxy size. We then propose an alternative, new physically motivated size definition based on the gas density threshold required for star formation that challenges our current understanding of the concept of galaxy size. The new physically motivated size measure can be adopted in upcoming deep, wide imaging surveys such as the LSST and ongoing efforts in preparation for this era will also be discussed.

Zoom:

https://rediris.zoom.us/j/87538068288?pwd=TGRWL1NYM1JlSXVpV1g2enphV3lCZz09

Meeting ID: 875 3806 8288

Passcode: 393134

Youtube:

https://youtu.be/Jv4lTY1wtU4

Youtube: