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Effect of gas percentage during minor mergers on the star formation in galaxies

Published online by Cambridge University Press:  09 June 2023

S. N. Hasan ,
Swetha Thakkalapally Open the ORCID record for Swetha Thakkalapally [Opens in a new window]  and
Priya Hasan Open the ORCID record for Priya Hasan [Opens in a new window]
S. N. Hasan
Affiliation:
Department of Mathematics, Maulana Azad National Urdu University, Hyderabad 500032, India, email: hasan.najam@gmail.com
Swetha Thakkalapally
Affiliation:
Department of Astronomy, Osmania University, Hyderabad 500007, India email: swetha3737@gmail.com
Priya Hasan
Affiliation:
Department of Physics, Maulana Azad National Urdu University, Hyderabad 500032, India, email: priya.hasan@gmail.com
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Abstract

We study the effect of minor mergers on star formation using simulations. We use GADGET4 code which has both collisionless and hydrodynamical particles. Our goal is to establish a relation between gas percentage present in the galaxies and the star formation in the merged galaxy. We use 1:10 minor mergers and we run the isolated simulations with varying gas percentages in the primary galaxy. We observe that the gas particles convert into stars due to the impact of the minor merger. As the gas percentage increases in the primary disk of the galaxy, more number of stars are formed. We also observed that newly formed star particles settle down in the disk of the primary galaxy and increase the thickness of the disk. We also observe that the thickness of the stellar disk containing the old stars also increases due to the impact of the merger.

Keywords

Numerical SimulationsGalaxy InteractionsMergers
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies (Aug 2022) , August 2021 , pp. 121 - 123
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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