[phys4phys] Naučno-stručni skup AOB - sreda 23.9.2026. u 13h

[Natasa Bon]

Poštovane kolege,

Pozivam vas na Naučno stručni skup koji će se održati u biblioteci 
Astronomske opservatorije
u sredu 23.9.2026. godine u 13h.
Predavanje će održati Tuğba Erol, student doktorskih studija na 
Univerzitetu Erciyes u Kayseri-u (Turska).

U nastavku su podaci o predavanju.

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Analysis of the NGC 6020 Shell Galaxy Using the Milanković Telescope


Abstract:

Objective: The shells surrounding galaxies are structures that typically 
take the form of concentric arcs and have low surface brightness. Deep 
observations are required to study these faint structures in detail. 
Although galaxy observations from many telescopes that provide publicly 
available data exist, these archival data do not provide sufficient 
depth for a precise shell analysis. To overcome this limitation, a deep 
observation of the NGC 6020 shell galaxy was made using the Milanković 
Telescope and shell analysis was performed.

Method: An observation lasting approximately 9 hours was made using the 
1.4 meter Milanković Telescope. These photometric observations, 
performed on May 5–6, 2024, and April 29, 2025, used the L filter. Data 
from the NGC 6020 shell galaxy was reduced using classical image 
processing techniques.

Results: Following the reduction of the observational data, the model we 
developed for shell detection and analysis was applied to the NGC 6020 
galaxy. The analysis determined structural parameters such as the number 
of shells in the galaxy, their distances from the center, and the number 
of generations in the galaxy, as well as the lower limit of the system's 
merger time. Furthermore, the galaxy's stellar mass was calculated and 
presented using a new method we applied during the analysis process.

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Srdačan pozdrav,

Koordinator seminara AO

dr Natasa Gavrilovic Bon
Associate Research Professor
web site: http://nbon.aob.rs/
Astronomical Observatory Belgrade
Volgina 7
11160 Belgrade, Serbia
Tel:+381 11 3089 068
Fax:2419 553