LAUSR

A superbubble is a hot, dilute, and X-ray-emitting gas cavity produced by stellar winds and supernova explosions. It is an intriguing feature for the study of stellar feedback processes. We report a study of possible superbubbles in the Andromeda Galaxy (M31). We identify one out of 83 extended sources as a strong superbubble candidate, SB1, from the M31 X-ray source catalog. SB1 is located in the northern disc of M31 and exhibits soft, extended X-ray emission surrounded by an Hαshell. The XMM-Newtonspectral analysis reveals that SB1 has a temperature of ∼0.14 keV and an X-ray luminosity of $L_{\rm X}\sim 3.5\times 10^{37}\, \rm erg\, s^{-1}$ in the $0.3\hbox{-}10.0~\rm keV$ band. Two stellar clusters are found at the west rim of SB1. The estimated age of SB1 is similar to that of an overlapping young stellar cluster, and the color-magnitude diagram reveals the presence of young stellar objects with an age of less than 10 Myr. We propose that SB1 is a superbubble, likely having triggered star formation in this cluster by compressing the accumulated gas, thereby leading to the formation of gas-dense regions.