PUBLICATIONS OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE104, Page 269-272, https://doi.org/10.69646/aob104p269
PROCEEDINGS of the XX Serbian Astronomical Conference, Belgrade, October 16 - 20, 2023, Edited by Jelena Petrović, Dušan Marčeta and Ana Lalović
Published by: Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia

Abstract. With the advent of IFU observations (SAURON survey, followed by ATLAS^3D survey) our picture of early-type galaxies that were thought to be monotonous (round, red, and dead) has changed dramatically. Early-type galaxies with two symmetric peaks in their velocity dispersion maps are dubbed double-sigma galaxies. One prototypical case is the NGC 4473 galaxy which is studied in this contribution using 3D spectroscopy that enabled detailed study of galaxy kinematics, age, and metallicity. Both spectroscopically and photometrically we decomposed the galaxy into three distinct components: one large de Vaucouleurs component and two smaller components counter-rotating compared to the large component. Large de Vaucouleurs component is dynamically hot while inner smaller struc- tures are dynamically cold suggesting that numerous minor, gas-rich mergers are responsible for its formation scenario.