The Expanding 3 kpc Arms Are Neither Expanding nor Spiral Arms but X1 Orbits Driven by the Galactic Bar

The Expanding 3 kpc Arms Are Neither Expanding nor Spiral Arms but X1 Orbits Driven by the Galactic Bar

Near the center of our Milky Way is a bar-like structure and the so-called Expanding 3 kpc arms. We currently have limited knowledge of this important region, since we are about 8.2 kpc from the center and cannot directly observe it at optical wavelengths, owing to strong extinction from interstella...

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Bibliographic Details
Main Authors: Jayender Kumar, Mark J. Reid, T. M. Dame, Simon P. Ellingsen, Lucas J. Hyland, Andreas Brunthaler, Karl M. Menten, Xing-Wu Zheng, Alberto Sanna
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Trigonometric parallax
Galactic center
Galaxy structure
Galactic bar
Star forming regions
Young stellar objects
Online Access:https://doi.org/10.3847/1538-4357/adb70f
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https://doi.org/10.3847/1538-4357/adb70f

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