description Sh2-90 Overview
Sh2-90 is a small Vulpecula H II region, notable for a hollow shell structure and embedded infrared sources linked to ongoing star formation.
help Sh2-90 FAQ
What type of object is Sh2-90?
Sh2-90 is a small H II region in the constellation Vulpecula. It is a hollow shell-like nebula associated with embedded infrared sources and ongoing star formation.
Why is Sh2-90 described as a shell nebula?
Its structure appears as a hollow or shell-like region rather than a simple uniform cloud. The shape is linked to energetic processes around young stars and ionized gas.
Does Sh2-90 contain newly forming stars?
Yes. Infrared sources embedded in or near the region are linked to ongoing star formation. Infrared observations are useful because young stellar objects can be hidden by surrounding dust.
Where in the sky can Sh2-90 be found?
Sh2-90 lies in Vulpecula, a northern-sky constellation. It is a relatively small H II region rather than a large naked-eye nebula.
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