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Effect of the gas percentage on the thickness of the galactic discs during minor mergers using hydrodynamical simulations

Published online by Cambridge University Press:  14 May 2020

Swetha Thakkalapally Open the ORCID record for Swetha Thakkalapally [Opens in a new window] ,
Priya Hasan  and
S. N. Hasan
Swetha Thakkalapally
Affiliation:
Osmania University, Hyderabad, India
Priya Hasan
Affiliation:
Maulana Azad National Urdu University, Hyderabad, India
S. N. Hasan
Affiliation:
Maulana Azad National Urdu University, Hyderabad, India
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Abstract

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We study the minor mergers of galaxies using simulations. For this we use GADGET2 code. We present results of simulations of minor mergers of disc galaxies of mass ratio 1:10. These simulations consist of collisionless as well as hydrodynamical runs including a gaseous component in the galactic disc of primary galaxy. Our goal is to establish the characteristics of discs obtained after the merger.We observe that the primary galaxy discs are not destroyed after the merger. We take different initial conditions for the primary galaxy varying the gas percentage in disc from 0–40 percentage and study the thickness of the disc after the merger. We generally observe that the thickness of the disc increases after the merger for any gas percentage. We also observe that as the gas percentage increases in the disc of initial primary galaxy, the increase in the thickness keeps decreasing.

Keywords

Methods: N-body simulationsMethods: numericalGalaxies: generalGalaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 281 - 283
Copyright
© International Astronomical Union 2020

References

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