A Triple AGN in the NGC 7733-7734 Merging Group
  Context: Galaxy interactions and mergers can lead to supermassive black hole
(SMBH) binaries which become active galactic nuclei (AGN) pairs when the SMBHs
start accreting mass. If there is a third galaxy involved in the interaction,
then a triple AGN system can form. Aims: Our goal is to investigate the nature
of the nuclear emission from the galaxies in the interacting pair
NGC\,7733--NGC\,7734 using archival VLT/MUSE Integral field spectrograph data
and study its relation to the stellar mass distribution traced by near-infrared
(NIR) observations from the South African Astronomical Observatory (SAAO).
Methods:We conducted near-infrared observations using the SAAO and identified
the morphological properties of bulges in each galaxy. We used MUSE data to
obtain a set of ionized emission lines from each galaxy and studied the
ionization mechanism. We also examined the relation of the galaxy pair with any
nearby companions with Far-UV observations using the UVIT. Conclusions: The
emission line analysis from the central regions of NGC\,7733 and NGC\,7734 show
Seyfert and LINER type AGN activity. The galaxy pair NGC\,7733--34 also shows
evidence of a third component, which has Seyfert-like emission. Hence, the
galaxy pair NGC\,7733--34 forms a triple AGN system. We also detected an
Extended Narrow-line region (ENLR) associated with the nucleus of NGC\,7733.
