Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-11-17
Ressler et al. 2010, AJ, 140, 1882
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
16 pages, 10 figures, final version published in 2010 December Astronomical Journal
Scientific paper
10.1088/0004-6256/140/6/1882
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.
Cohen Martin
Hoard Donald Wayne
Mainzer Amy K.
Ressler Michael E.
Wachter Stefanie
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