Open AccessDust discs in edge-on galaxies: case of NGC 4437
Author(s) -
P. Usachev,
Aleksandr V. Mosenkov,
С. С. Савченко,
G. A. Gontcharov,
V. G. Il’in,
Alexander A Marchuk,
Alexander Yu. Smirnov
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.168
Subject(s) - physics , astrophysics , galaxy , radius , lenticular galaxy , interacting galaxy , disc galaxy , surface brightness , astronomy , brightest cluster galaxy , elliptical galaxy , computer science , computer security
We present a study of the distribution of dust in the nearby edge-on galaxy NGC 4437 by modelling its surface brightnessdistribution based on the Herschel data at 250 µm. Our model utilizes a 3D exponential disk function with two exponentialscales and a break radius which is suitable to describe the observed galaxy prole in great detail. The model is improved bymasking background and foreground galaxies and by analysing the brightness distribution of separate bright sources insidethe galaxy. As a result, we found that this galaxy has a second dust disc. We also discuss the possibility of detecting asecond dust disc component in other edge-on galaxies.