Influence of mid-infrared Galactic bubble on surroundings: A case study on IRAS 16489-4431

Kavli Affiliate: Ke Wang

| First 5 Authors: Ariful Hoque, Tapas Baug, Lokesh Dewangan, Ke Wang, Tie Liu

| Summary:

We studied the influence of a massive star on a mid-infrared bubble and its
surrounding gas in the IRAS,16489-4431 star-forming region using
multi-wavelength data. The {it Spitzer} mid-infrared band images revealed the
shocked nature of the bubble. Analyses showed that the bubble is developed by a
massive star owing to its strong radiation pressure. Evidence of collected
material along the edge of the bubble was noted by the cold gas tracer line
observed using Atacama Millimeter/submillimeter Array (ALMA). The presence of
dense dust cores with bi-polar outflows and young stellar objects toward the
collected material is suggestive of active star formation possibly influenced
by the expansion of the radiation driven bubble.

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