X-rays from a newly discovered superbubble in M31

• DOI: 10.1093/mnras/stae2024
• Publication Date: 2024-08-23T22:03:50Z
• Authors: Jiejia Liu; Rui Huang; Chengzhe Li; Junjie Mao; Hui Li; Wei Cui
• Keywords: Superbubble

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