Title
Runaway Stars as Possible Sources of the Elliptical Ring Structures in NGC 7538
Document Type
Article
Department or Administrative Unit
Physics
Publication Date
4-2021
Abstract
Two large, ~500 M☉ elliptical ring structures have been identified in the high-mass star-forming region NGC 7538. The origin of these ring structures is unknown, so we investigate the possibility that a runaway O- or B-type star may have originated in or passed through the region and created either or both of the ring structures via stellar wind. In testing this hypothesis, we identify one candidate star, BD +61 2408, that may have formed the northern ring. It is a B3e star with a mass of ~8 M☉ and a surface temperature of ~20,000 K. Its position, motion, timescale, and spectral type are all consistent with the star being a candidate for having formed one of the ring structures in NGC 7538.
Recommended Citation
Fenske, J., Arakawa, J., Fallscheer, C., & Francesco, J. D. (2021). Runaway Stars as Possible Sources of the Elliptical Ring Structures in NGC 7538. The Astronomical Journal, 161(4), 156. https://doi.org/10.3847/1538-3881/abded2
Journal
The Astronomical Journal
Rights
© 2021. The American Astronomical Society. All rights reserved.
Comments
This article was originally published in The Astronomical Journal. The full-text article from the publisher can be found here.
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