Robuta

https://www.aanda.org/articles/aa/ref/2005/07/aah4287/aah4287.html Dust content in compact HII regions (NGC 7538-IRS1, IRS2, and IRS3) | Astronomy & Astrophysics (A&A) https://eso.org/public/switzerland-fr/images/eso0929a/?lang The region around the massive star IRS2 | ESO Suisse the region massive star around irs2 eso