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The star formation rate (SFR) of galaxies can change due to interactionsbetween galaxies, stellar feedback ejection of gas into the circumgalacticmedium, and energy injection from accretion onto black holes. However, it isnot clear which of these processes dominantly alters the formation of starswithin galaxies. Johnson et al. (2018) reported the discovery of large gaseousnebulae in the intragroup medium of a galaxy group housing QSO PKS0405$-$123and hypothesized they were created by galaxy interactions. We identify a sampleof 30 group member galaxies at z$\sim$0.57 from the VLT/MUSE observations ofthe field and calculate their [OII]$\lambda$$\lambda$3727,3729 SFRs in order toinvestigate whether the QSO and nebulae have affected the SFRs of thesurrounding galaxies. We find that star formation is more prevalent in galaxieswithin the nebulae, signifying galaxy interactions are fueling higher SFRs.

Merger Interactions Enhance Star Formation Rates in Galaxy Group Housing QSO PKS0405$-$123 and Gaseous Nebulae