SPECIFIC ANGULAR MOMENTUM CORRELATION WITH THE NUMBER OF SATELLITES
Ana Lalović, Milena Jovanović, Sladjana Knežević, Srdjan Samurović.
Publication
PUBLICATIONS OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE104, Page 67-72, https://doi.org/10.69646/aob104p067
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
Published: 15. 12. 2024.
Abstract
Abstract. The number of satellites is correlated with the mass of the galaxy bulge and bulge-to-total ratio, indicating that the origin of satellites might be related to the mechanism responsible for bulge creation/growth. In this work, we have found that specific angular momentum correlates positively with the number of satellites for a sample of six nearby galaxies for which we have a complete census of the satellite population. Contrary to our previous work where we found a negative correlation using an approximate formula for specific angular momentum, in this work we have measured specific angular momentum more thoroughly: using both rotation curve data and galaxy mass distribution in the near infrared. Disagreement can be explained by the difference between approximate and more accurate measurements of angular momentum.