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Understanding galaxy mergers and AGN feedback with UVIT

Published online by Cambridge University Press:  29 January 2021

Khatun Rubinur ,
Mousumi Das ,
Preeti Kharb  and
P. T. Rahne
Khatun Rubinur
Affiliation:
National Centre for Radio Astrophysics - Tata Institute of Fundamental Research, S. P. Pune University Campus, Ganeshkhind, Pune, 411007, India email: [email protected]
Mousumi Das
Affiliation:
Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru, 560034, India
Preeti Kharb
Affiliation:
National Centre for Radio Astrophysics - Tata Institute of Fundamental Research, S. P. Pune University Campus, Ganeshkhind, Pune, 411007, India email: [email protected]
P. T. Rahne
Affiliation:
Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru, 560034, India
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Abstract

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Simulations expect an enhanced star-formation and active galactic nuclei (AGN) activity during galaxy mergers, which can lead to formation of binary/dual AGN. AGN feedback can enhance or suppress star-formation. We have carried out a pilot study of a sample of ˜10 dual nuclei galaxies with AstroSat’s Ultraviolet Imaging Telescope (UVIT). Here, we present the initial results for two sample galaxies (Mrk 739, ESO 509) and deep multi-wavelength data of another galaxy (Mrk 212). UVIT observations have revealed signatures of positive AGN feedback in Mrk 739 and Mrk 212, and negative feedback in ESO 509. Deeper UVIT observations have recently been approved; these will provide better constraints on star-formation as well as AGN feedback in these systems.

Keywords

Galaxy mergerstar-formationAGN feedbackbinary/dual AGN
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 345 - 347
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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