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An Optical-Infrared Study of the Young Multipolar Planetary Nebula NGC 6644
Solar and Stellar Astrophysics (astro-ph.SR)
2010/10/11
High-resolution HST imaging of the compact planetary nebula NGC 6644 has revealed two pairs of bipolar lobes and a central ring lying close to the plane of the sky. From mid-infrared imaging obtained ...
The Physical Characteristics of Binary Central Stars of Planetary Nebulae
Solar and Stellar Astrophysics (astro-ph.SR)
2010/10/5
A number of efforts are underway to detect close binary stars in planetary nebulae. The primary goal of these studies is to determine the binary fraction of central stars.
Jets and jet-like structures of low-ionization in planetary nebulae
low-ionization planetary nebulae jet-like structures
2009/6/5
Jets and jet-like structures of low-ionization in planetary nebulae。