There’s just one Ring Nebula to rule them all. Now Webb has turned its eye on this popular target, revealing the complexity of its structure in unprecedented detail — as well the possibility that the dying star at its center has a companion.
Shown here are two views of this nebula, one taken by Webb’s Near-Infrared Camera (NIRCam) on the left, and one taken by its Mid-Infrared Instrument (MIRI) on the right. MIRI provided the sharpest and clearest view of the faint halo outside the bright ring. Physical features within suggest there may be a companion star helping to sculpt the layers thrown off by the dying star.
The Ring Nebula is a “planetary nebula,” originally named for having a planet-like appearance through small telescopes. In actuality, planetary nebulae are the remains of a star’s death throes. And while the Ring Nebula resembles a ring when seen face-on, it’s more of a donut shape (a torus) when viewed in three dimensions!
This image: This new image of the Ring Nebula from Webb’s MIRI (Mid-InfraRed Instrument) reveals particular details in the concentric features in the outer regions of the nebulae’s ring. Roughly ten concentric arcs located just beyond the outer edge of the main ring. The arcs are thought to originate from the interaction of the central star with a low-mass companion orbiting at a distance comparable to that between the Earth and Pluto.
Credit: ESA/Webb, NASA, CSA, M. Barlow (University College London), N. Cox (ACRI-ST), R. Wesson (Cardiff University)
