School of Astronomy

School of Astronomy (SoA) - Weekly Seminar

Reading the book of the Universe with lens of galaxies

By: Habib Khosroshahi (IPM)

Abstract

Before galaxies were dubbed as the building blocks of the Universe, they were identified as nebulae, diffuse extended objects in dark sky of 19th century. Soon their observations opened the window to the expanding Universe, perhaps the single most important observation for our understanding of the cosmos. Today, some category of galaxies are the largest concentration of baryons in the visible sky, largest stellar objects, host to most energetic phenomenon in the universe after the Big Bang while some are the most quiet, smooth and event less entities. They are interesting on their own and also as a group. The time scale in which galaxies form and evolve closely follows the life time of the Universe thus they hold the key to some of its mysteries. Their scale and mass is just right to challenge dark matter presence. I will report on the latest development in our studies of galaxies and galaxy systems which are based on observations and modelings from giants to dwarfs, rich to poor, loose to compacts, old to newborn, with or without running engines!

October 24 / 3 Aban 1391/

Wednesday 1:30 PM

IPM Larak Building, School of Astronomy

Address: Larak Garden, opposite Araj, Artesh Highway,Tehran, Iran

E-mail: astro(at)ipm.ir