The Discovery of Infrared Rings in the Planetary Nebula NGC 1514 During the WISE All-Sky Survey

Abstract

We report the discovery of a pair of infrared, axisymmetric rings in the planetary nebula NGC 1514 during the course of the WISE all-sky mid-infrared survey. Similar structures are seen at visible wavelengths in objects such as the "Engraved Hourglass Nebula" (MyCn 18) and the "Southern Crab Nebula" (Hen 2-104). However, in NGC 1514 we see only a single pair of rings and they are easily observed only in the mid-infrared. These rings are roughly 0.2 pc in diameter, are separated by 0.05 pc, and are dominated by dust emission with a characteristic temperature of 160 K. We compare the morphology and color of the rings to the other nebular structures seen at visible, far-infrared, and radio wavelengths, and close with a discussion of a physical model and formation scenario for NGC 1514.

arXiv comment16 pages, 10 figures, final version published in 2010 December Astronomical Journal

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• The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
• SALT HRS discovery of a long period double-degenerate binary in the planetary nebula NGC 1360
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• The Coordinated Radio and Infrared Survey for High-mass Star Formation. IV: A new radio selected sample of compact Galactic Planetary Nebulae
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• Observations of the planetary nebula RWT 152 with OSIRIS/GTC