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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of XX Serbian Astronomical Conference

ISBN

—

ISSN

0373-3742

e-ISSN

—

Počet stran výsledku

6

Strana od-do

133-138

Název nakladatele

Astronomical Observatory of Belgrade

Místo vydání

Bělehrad

Místo konání akce

Bělehrad

Datum konání akce

16. 10. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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