Deep imaging with Milanković telescope: Linking merger history to kinematics of elliptical galaxies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00638017" target="_blank" >RIV/68378271:_____/24:00638017 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.69646/aob104p133" target="_blank" >http://dx.doi.org/10.69646/aob104p133</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.69646/aob104p133" target="_blank" >10.69646/aob104p133</a>

Result language

angličtina

Original language name

Deep imaging with Milanković telescope: Linking merger history to kinematics of elliptical galaxies

Original language description

Kinematical and morphological features observed in early-type galaxies provide valuable insights into the evolution of their hosts. We studied the origin of prolate rotation (i.e., rotation around the long axis) in Illustris large-scale cosmological hydrodynamical simulations. We found that basically all the simulated massive prolate rotators were created in relatively recent major mergers of galaxies. Such mergers are expected to produce tidal features such as tails, shells, asymmetric stellar halos. We investigated deep optical images of prolate rotators, including newly obtained data from the Milankovic telescope (Astronomical Station Vidojevica), revealing signs of galaxy interaction in all of them. This correlation proves to be statistically very significant when compared with a general sample of early-type galaxies from the MATLAS deep imaging survey. In an ongoing project, we use the Milankovic telescope to assemble deep images of the complete sample of all known nearby massive prolate rotators. The most frequent tidal features among the prolate rotators happen to be shells. We developed methods to calculate the probable time of the merger from optical images. This will allow us to compare the merger history of the sample with predictions from Illustris. Our plan is to expand these methods to even larger samples of shell galaxies supplied by upcoming large surveys like LSST at Rubin Observatory. This will provide an unprecedented amount of statistically significant data on the recent merger history of our Universe and allow extensive investigation of the impact of mergers to a wide range of other astrophysical phenomena.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of XX Serbian Astronomical Conference

ISBN

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ISSN

0373-3742

e-ISSN

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Number of pages

6

Pages from-to

133-138

Publisher name

Astronomical Observatory of Belgrade

Place of publication

Bělehrad

Event location

Bělehrad

Event date

Oct 16, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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