Synchronous Evolution of Galaxies in Groups: NGC 524 Group
Olga K. Sil'chenko (1), Victor L. Afanasiev (2) ((1) Sternberg, Astronomical Institute of the Lomonosov Moscow State University, (2) Special, Astrophysical Observatory of the Russian Academy of Sciences)
TL;DR
This study uses panoramic spectroscopy to analyze stellar populations in five early-type galaxies of the NGC 524 group, revealing synchronized evolution and star formation bursts in their central regions.
Contribution
It provides new insights into the synchronized evolution of galaxies within a group through detailed spectroscopic analysis.
Findings
Average stellar age in bulges is 3-6 Gyr.
Four galaxies experienced star formation bursts 1-2 Gyr ago.
NGC 502 shows no recent nuclear star formation.
Abstract
By means of panoramic spectroscopy at the SAO RAS BTA telescope, we investigated the properties of stellar populations in the central regions of five early-type galaxies -- the NGC 524 group members. The evolution of the central regions of galaxies looks synchronized: the average age of stars in the bulges of all the five galaxies lies in the range of 3--6 Gyr. Four of the five galaxies revealed synchronized bursts of star formation in the nuclei 1--2 Gyr ago. The only galaxy, in which the ages of stellar population in the nucleus and in the bulge coincide (i.e. the nuclear burst of star formation did not take place) is NGC 502, the farthest from the center of the group of all the galaxies studied.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.